Yes. The Free tier is 600 requests a month at 100 requests a minute, across every endpoint in the catalogue, with no credit card. Nothing about it expires.

What happens when I hit the quota?

Requests return 429 with the limit, what you have used, and which window you tripped — nothing is queued, and nothing is charged. The monthly quota resets on the 1st (UTC). There is no rollover: unused requests do not carry into the next month.

Do failed requests use up my quota?

A 5xx does not. If a source breaks on our side, the request is excluded from your monthly count. A 4xx does count — a wrong parameter is still a request we answered. Per-minute throttling counts everything, so a retry loop is still throttled.

Which tier do I need?

Start on Free. Every response carries the remaining quota in its headers, and the dashboard reads the same number enforcement uses, so you will see the ceiling coming rather than discovering it.

How is Zapi different from RapidAPI or Apify?

Zapi focuses on a consistent REST contract — one API key, one response format, one error pattern for every source. No need to learn per-provider quirks like on traditional marketplaces, and no need to set up scraping workflows like on Apify.

What about the legality of accessing public data?

Zapi only accesses data that is publicly available without a login. Responsibility for how it is ultimately used stays with the developer — make sure your use case complies with the original source's ToS and the regulations in your operating region.

Is there an official SDK?

One: zpi-sdk, for TypeScript and JavaScript. It carries a typed error hierarchy, retries only what is safe to retry, submits bulk jobs, and verifies webhook signatures. Everything else is plain REST — cURL or any HTTP client works.

Can I request a source that isn’t in the catalogue yet?

Yes, through the community Discord, on any tier.

Clinical Tables

NLM Clinical Table Search Service — 22 keyless code systems including LOINC, ICD-10-CM, ICD-11, RxTerms, HPO, HCPCS, NPI, UCUM and genomics tables.

25 endpoints67 calls25/25 passing

Get API key

Answer List

LOINC answer list for one question code — clinicaltables.nlm.nih.gov, direct JSON. Sits outside the /api/<table>/v3/search grammar: its own path, one code in,

GET/v1/health:clinical-tables/answer-list

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Parameters

Name	Type	In	Description
loincNum	string	query	LOINC code of the question whose answer list to return. Required.

Example response

{"project":"health:clinical-tables",  "data": {"count":7,    "items": [      {"code":"LA12637-7","text":"Independent - no help or staff oversight at any time","sequence":1      },      {"code":"LA12638-5","text":"Supervision - oversight, encouragement or cueing","sequence":2      },      {"code":"LA12639-3","text":"Limited assistance - resident highly involved in activity; staff provide guided maneuvering of limbs or other non-weight-bearing assistance","sequence":3      },      {"code":"LA12640-1","text":"Extensive assistance - resident involved in activity, staff provide weight-bearing support","sequence":4      },      {"code":"LA12641-9","text":"Total dependence - full staff performance every time during entire 7-day period","sequence":5      },      {"code":"LA12642-7","text":"Activity occurred only once or twice - activity did occur but only once or twice","sequence":6      },      {"code":"LA18614-0","text":"Activity did not occur - activity did not occur or family and/or non-facility staff provided care 100% of the time for that activity over the entire 7-day period","sequence":7      }    ],"loincNum":"45592-3","provider":"clinical-tables"  },"timestamp":"2026-08-30T00:49:28Z"}

Errors

401Missing or invalid x-api-key
404Not found or private
429Rate limit or monthly quota reached

Conditions

Problem-list conditions — clinicaltables.nlm.nih.gov `conditions`, direct JSON, no key. The service answers with a positional array [total, codes, extra, displayRows]

GET/v1/health:clinical-tables/conditions

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Parameters

Name	Type	In	Description
terms	string	query	Search text. Several partial words are combined with an implicit AND. Required.
page	number	query	Page number. Default 1.
limit	number	query	Items per page. Default 10, max 500. Page times limit may not exceed 7500.
fields	string	query	Comma-separated fields returned as display strings. Allowed: primary_name, consumer_name, key_id, icd10cm_codes, icd10cm, term_icd9_code, term_icd9_text, word_synonyms, synonyms, info_link_data.
extraFields	string	query	Comma-separated fields returned with their native types, so objects and arrays stay structured. Accepts field:alias. Allowed: primary_name, consumer_name, key_id, icd10cm_codes, icd10cm, term_icd9_code, term_icd9_text, word_synonyms, synonyms, info_link_data.
searchFields	string	query	Comma-separated fields the search text is matched against. Allowed: primary_name, consumer_name, key_id, icd10cm_codes, icd10cm, term_icd9_code, term_icd9_text, word_synonyms, synonyms, info_link_data.
codeField	string	query	The single field to report as each item's code. Allowed: primary_name, consumer_name, key_id, icd10cm_codes, icd10cm, term_icd9_code, term_icd9_text, word_synonyms, synonyms, info_link_data.
filter	string	query	Elasticsearch query-string filter applied on top of the search text. It is not wildcarded automatically.

Example response

{"project":"health:clinical-tables",  "data": {"page":1,"count":3,    "items": [      {"code":"366","keyId":"366","primaryName":"Asthma","consumerName":"Asthma"      },      {"code":"30572","keyId":"30572",        "synonyms": [          "asthma mild persistent"        ],"primaryName":"Asthma - mild persistent","consumerName":"Asthma - mild persistent"      },      {"code":"30573","keyId":"30573",        "synonyms": [          "asthma moderate persistent"        ],"primaryName":"Asthma - moderate persistent","consumerName":"Asthma - moderate persistent"      }    ],"limit":3,"terms":"asthma","total":5,"hasMore":true,"nextPage":2,"provider":"clinical-tables"  },"timestamp":"2026-08-30T00:49:28Z"}

Errors

401Missing or invalid x-api-key
404Not found or private
429Rate limit or monthly quota reached

Cosmic

COSMIC structural variants — clinicaltables.nlm.nih.gov `cosmic_struct`, direct JSON. The service answers with a positional array [total, codes, extra, displayRows]

GET/v1/health:clinical-tables/cosmic

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Parameters

Name	Type	In	Description
terms	string	query	Search text. Several partial words are combined with an implicit AND. Required.
page	number	query	Page number. Default 1.
limit	number	query	Items per page. Default 10, max 500. Page times limit may not exceed 7500.
fields	string	query	Comma-separated fields returned as display strings. Allowed: BreakPointOrder, ChromFrom, ChromTo, Description, ID_STUDY, LocationFromMax, LocationFromMin, LocationToMax, LocationToMin, MutationID, MutationType, NonTemplatedInsSeq, PrimaryHistology, PrimarySite, Site, StrandFrom, StrandTo, GRChVer, COSMIC_STRUCTURAL_ID, COSMIC_PHENOTYPE_ID, COSMIC_STUDY_ID.
extraFields	string	query	Comma-separated fields returned with their native types, so objects and arrays stay structured. Accepts field:alias. Allowed: BreakPointOrder, ChromFrom, ChromTo, Description, ID_STUDY, LocationFromMax, LocationFromMin, LocationToMax, LocationToMin, MutationID, MutationType, NonTemplatedInsSeq, PrimaryHistology, PrimarySite, Site, StrandFrom, StrandTo, GRChVer, COSMIC_STRUCTURAL_ID, COSMIC_PHENOTYPE_ID, COSMIC_STUDY_ID.
searchFields	string	query	Comma-separated fields the search text is matched against. Allowed: BreakPointOrder, ChromFrom, ChromTo, Description, ID_STUDY, LocationFromMax, LocationFromMin, LocationToMax, LocationToMin, MutationID, MutationType, NonTemplatedInsSeq, PrimaryHistology, PrimarySite, Site, StrandFrom, StrandTo, GRChVer, COSMIC_STRUCTURAL_ID, COSMIC_PHENOTYPE_ID, COSMIC_STUDY_ID.
codeField	string	query	The single field to report as each item's code. Allowed: BreakPointOrder, ChromFrom, ChromTo, Description, ID_STUDY, LocationFromMax, LocationFromMin, LocationToMax, LocationToMin, MutationID, MutationType, NonTemplatedInsSeq, PrimaryHistology, PrimarySite, Site, StrandFrom, StrandTo, GRChVer, COSMIC_STRUCTURAL_ID, COSMIC_PHENOTYPE_ID, COSMIC_STUDY_ID.
filter	string	query	Elasticsearch query-string filter applied on top of the search text. It is not wildcarded automatically.
genomeBuild	enum	query	GRCh human genome build the coordinates refer to. Default 37. One of 37, 38.

Example response

{"project":"health:clinical-tables",  "data": {"page":1,"count":3,    "items": [      {"code":"119626","chromTo":"7","chromFrom":"7","mutationID":"119626","description":"chr7:g.(145808590_145808610)_(145874585_145874605)del","mutationType":"intrachromosomal deletion"      },      {"code":"119635","chromTo":"18","chromFrom":"18","mutationID":"119635","description":"chr18:g.(50962789_50962809)_(51078735_51078755)del","mutationType":"intrachromosomal deletion"      },      {"code":"119648","chromTo":"13","chromFrom":"13","mutationID":"119648","description":"chr13:g.(23495219_23495239)_(23495527_23495547)del","mutationType":"intrachromosomal deletion"      }    ],"limit":3,"terms":"deletion","total":49355,"hasMore":true,"nextPage":2,"provider":"clinical-tables"  },"timestamp":"2026-08-30T00:49:28Z"}

Errors

401Missing or invalid x-api-key
404Not found or private
429Rate limit or monthly quota reached

Cytogenetic Locations

Cytogenetic band locations — clinicaltables.nlm.nih.gov `cytogenetic_locs`, direct JSON, no key. The service answers with a positional array [total, codes, extra, displayRows]

GET/v1/health:clinical-tables/cytogenetic-locations

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Parameters

Name	Type	In	Description
terms	string	query	Search text. Several partial words are combined with an implicit AND. Required.
page	number	query	Page number. Default 1.
limit	number	query	Items per page. Default 10, max 500. Page times limit may not exceed 7500.
fields	string	query	Comma-separated fields returned as display strings. Allowed: chromosome, arm, band, iscn_start, iscn_stop, stain, cytogenetic.
extraFields	string	query	Comma-separated fields returned with their native types, so objects and arrays stay structured. Accepts field:alias. Allowed: chromosome, arm, band, iscn_start, iscn_stop, stain, cytogenetic.
searchFields	string	query	Comma-separated fields the search text is matched against. Allowed: chromosome, arm, band, iscn_start, iscn_stop, stain, cytogenetic.
codeField	string	query	The single field to report as each item's code. Allowed: chromosome, arm, band, iscn_start, iscn_stop, stain, cytogenetic.
filter	string	query	Elasticsearch query-string filter applied on top of the search text. It is not wildcarded automatically.

Example response

{"project":"health:clinical-tables",  "data": {"page":1,"count":3,    "items": [      {"arm":"q","code":"7q31.1","chromosome":"7","cytogenetic":"7q31.1"      },      {"arm":"q","code":"7q31.31","chromosome":"7","cytogenetic":"7q31.31"      },      {"arm":"q","code":"7q31.33","chromosome":"7","cytogenetic":"7q31.33"      }    ],"limit":3,"terms":"7q31","total":5,"hasMore":true,"nextPage":2,"provider":"clinical-tables"  },"timestamp":"2026-08-30T00:49:28Z"}

Errors

401Missing or invalid x-api-key
404Not found or private
429Rate limit or monthly quota reached

Dbvar

dbVar structural variants — clinicaltables.nlm.nih.gov `dbvar`, direct JSON, no key. The service answers with a positional array [total, codes, extra, displayRows]

GET/v1/health:clinical-tables/dbvar

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Parameters

Name	Type	In	Description
terms	string	query	Search text. Several partial words are combined with an implicit AND. Required.
page	number	query	Page number. Default 1.
limit	number	query	Items per page. Default 10, max 500. Page times limit may not exceed 7500.
fields	string	query	Comma-separated fields returned as display strings. Allowed: Alias, ciend, cipos, clinical_int, copy_number, Dbxref, End_range, FeatureEnd, FeatureStart, gender, ID, Name, parent, phenotype, sampleset_name, sampleset_type, SeqID, Start_range, Type, var_origin, Zygosity.
extraFields	string	query	Comma-separated fields returned with their native types, so objects and arrays stay structured. Accepts field:alias. Allowed: Alias, ciend, cipos, clinical_int, copy_number, Dbxref, End_range, FeatureEnd, FeatureStart, gender, ID, Name, parent, phenotype, sampleset_name, sampleset_type, SeqID, Start_range, Type, var_origin, Zygosity.
searchFields	string	query	Comma-separated fields the search text is matched against. Allowed: Alias, ciend, cipos, clinical_int, copy_number, Dbxref, End_range, FeatureEnd, FeatureStart, gender, ID, Name, parent, phenotype, sampleset_name, sampleset_type, SeqID, Start_range, Type, var_origin, Zygosity.
codeField	string	query	The single field to report as each item's code. Allowed: Alias, ciend, cipos, clinical_int, copy_number, Dbxref, End_range, FeatureEnd, FeatureStart, gender, ID, Name, parent, phenotype, sampleset_name, sampleset_type, SeqID, Start_range, Type, var_origin, Zygosity.
filter	string	query	Elasticsearch query-string filter applied on top of the search text. It is not wildcarded automatically.

Example response

{"project":"health:clinical-tables",  "data": {"page":1,"count":3,    "items": [      {"id":"7945772","code":"nsv7447629","name":"nsv7447629","type":"copy_number_variation","alias":"3___122567173_122571435___GRCh37_copy_number_variation_from_gain_or_loss","dbxref":"URL:www.ncbi.nlm.nih.gov/dbvar/variants/nsv7447629"      },      {"id":"7945768","code":"nsv7447625","name":"nsv7447625","type":"copy_number_variation","alias":"2___241740907_241778621___GRCh37_copy_number_variation_from_gain_or_loss","dbxref":"URL:www.ncbi.nlm.nih.gov/dbvar/variants/nsv7447625"      },      {"id":"7945758","code":"nsv7447615","name":"nsv7447615","type":"copy_number_variation","alias":"3___46130509_46180416___GRCh37_copy_number_variation_from_gain_or_loss","dbxref":"URL:www.ncbi.nlm.nih.gov/dbvar/variants/nsv7447615"      }    ],"limit":3,"terms":"nsv","total":10000,"hasMore":true,"nextPage":2,"provider":"clinical-tables"  },"timestamp":"2026-08-30T00:49:28Z"}

Errors

401Missing or invalid x-api-key
404Not found or private
429Rate limit or monthly quota reached

Disease Names

Disease names from MedGen — clinicaltables.nlm.nih.gov `disease_names`, direct JSON, no key. The service answers with a positional array [total, codes, extra, displayRows]

GET/v1/health:clinical-tables/disease-names

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Parameters

Name	Type	In	Description
terms	string	query	Search text. Several partial words are combined with an implicit AND. Required.
page	number	query	Page number. Default 1.
limit	number	query	Items per page. Default 10, max 500. Page times limit may not exceed 7500.
fields	string	query	Comma-separated fields returned as display strings. Allowed: DiseaseName, ConceptID.
extraFields	string	query	Comma-separated fields returned with their native types, so objects and arrays stay structured. Accepts field:alias. Allowed: DiseaseName, ConceptID.
searchFields	string	query	Comma-separated fields the search text is matched against. Allowed: DiseaseName, ConceptID.
codeField	string	query	The single field to report as each item's code. Allowed: DiseaseName, ConceptID.
filter	string	query	Elasticsearch query-string filter applied on top of the search text. It is not wildcarded automatically.

Example response

{"project":"health:clinical-tables",  "data": {"page":1,"count":3,    "items": [      {"code":"C5681015","conceptID":"C5681015","diseaseName":"Marfan and Marfan-related disorder"      },      {"code":"C0024796","conceptID":"C0024796","diseaseName":"Marfan syndrome"      },      {"code":"C4016055","conceptID":"C4016055","diseaseName":"Marfan syndrome, atypical"      }    ],"limit":3,"terms":"marfan","total":19,"hasMore":true,"nextPage":2,"provider":"clinical-tables"  },"timestamp":"2026-08-30T00:49:28Z"}

Errors

401Missing or invalid x-api-key
404Not found or private
429Rate limit or monthly quota reached

Drug Ingredients

Drug ingredient names — clinicaltables.nlm.nih.gov `drug_ingredients`, direct JSON, no key. The service answers with a positional array [total, codes, extra, displayRows]

GET/v1/health:clinical-tables/drug-ingredients

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Parameters

Name	Type	In	Description
terms	string	query	Search text. Several partial words are combined with an implicit AND. Required.
page	number	query	Page number. Default 1.
limit	number	query	Items per page. Default 10, max 500. Page times limit may not exceed 7500.
fields	string	query	Comma-separated fields returned as display strings. Allowed: code, name.
extraFields	string	query	Comma-separated fields returned with their native types, so objects and arrays stay structured. Accepts field:alias. Allowed: code, name.
searchFields	string	query	Comma-separated fields the search text is matched against. Allowed: code, name.
codeField	string	query	The single field to report as each item's code. Allowed: code, name.
filter	string	query	Elasticsearch query-string filter applied on top of the search text. It is not wildcarded automatically.

Example response

{"project":"health:clinical-tables",  "data": {"page":1,"count":1,    "items": [      {"code":"1191","name":"aspirin"      }    ],"limit":3,"terms":"aspirin","total":1,"hasMore":false,"nextPage":null,"provider":"clinical-tables"  },"timestamp":"2026-08-30T00:49:28Z"}

Errors

401Missing or invalid x-api-key
404Not found or private
429Rate limit or monthly quota reached

Drugs

RxTerms drug names — clinicaltables.nlm.nih.gov `rxterms`, direct JSON, no key. The service answers with a positional array [total, codes, extra, displayRows]

GET/v1/health:clinical-tables/drugs

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Parameters

Name	Type	In	Description
terms	string	query	Search text. Several partial words are combined with an implicit AND. Required.
page	number	query	Page number. Default 1.
limit	number	query	Items per page. Default 10, max 500. Page times limit may not exceed 7500.
fields	string	query	Comma-separated fields returned as display strings. Allowed: DISPLAY_NAME, STRENGTHS_AND_FORMS, RXCUIS, SXDG_RXCUI, DISPLAY_NAME_SYNONYM.
extraFields	string	query	Comma-separated fields returned with their native types, so objects and arrays stay structured. Accepts field:alias. Allowed: DISPLAY_NAME, STRENGTHS_AND_FORMS, RXCUIS, SXDG_RXCUI, DISPLAY_NAME_SYNONYM.
searchFields	string	query	Comma-separated fields the search text is matched against. Allowed: DISPLAY_NAME, STRENGTHS_AND_FORMS, RXCUIS, SXDG_RXCUI, DISPLAY_NAME_SYNONYM.
codeField	string	query	The single field to report as each item's code. Allowed: DISPLAY_NAME, STRENGTHS_AND_FORMS, RXCUIS, SXDG_RXCUI, DISPLAY_NAME_SYNONYM.
filter	string	query	Elasticsearch query-string filter applied on top of the search text. It is not wildcarded automatically.

Example response

{"project":"health:clinical-tables",  "data": {"page":1,"count":3,    "items": [      {"code":"Aspirin (Oral Pill)",        "rxcuis": [          "252857",          "308416",          "243670",          "198466",          "198467",          "212033",          "308409",          "198471"        ],"sxdgRxcui":"1154070","displayName":"Aspirin (Oral Pill)",        "strengthsAndForms": [          " 81 mg Cap",          " 81 mg DR Tab",          " 81 mg Tab",          "325 mg Cap",          "325 mg DR Tab",          "325 mg Tab",          "500 mg DR Tab",          "500 mg Tab"        ]      },      {"code":"Aspirin (Chewable)",        "rxcuis": [          "318272"        ],"sxdgRxcui":"1294937","displayName":"Aspirin (Chewable)",        "strengthsAndForms": [          "81 mg Tab"        ]      },      {"code":"Aspirin/oxyCODONE (Oral Pill)",        "rxcuis": [          "637540",          "848768"        ],"sxdgRxcui":"1153750","displayName":"Aspirin/oxyCODONE (Oral Pill)",        "strengthsAndForms": [          "325-4.5-0.38 mg Tab",          "325-4.84 mg Tab"        ]      }    ],"limit":3,"terms":"aspirin","total":15,"hasMore":true,"nextPage":2,"provider":"clinical-tables"  },"timestamp":"2026-08-30T00:49:28Z"}

Errors

401Missing or invalid x-api-key
404Not found or private
429Rate limit or monthly quota reached

Form Definition

Renderable LOINC panel definition — clinicaltables.nlm.nih.gov, direct JSON. The one rich payload in this source: a nested question tree with units, answer

GET/v1/health:clinical-tables/form-definition

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Parameters

Name	Type	In	Description
loincNum	string	query	LOINC code of the panel or form whose definition to return. Required.

Example response

{"project":"health:clinical-tables",  "data": {"code":"34565-2","name":"Vital signs, weight and height panel",    "items": [      {        "items": [          {            "units": [              {"code":"{beats}/min","name":"{beats}/min","system":"http://unitsofmeasure.org","isDefault":false              }            ],"linkId":"/34566-0/8867-4","dataType":"REAL","isHeader":false,"question":"Heart rate","questionCode":"8867-4","questionCodeSystem":"http://loinc.org"          }        ],"linkId":"/34566-0","dataType":"SECTION","isHeader":true,"question":"Vital Signs Pnl","questionCode":"34566-0","questionCodeSystem":"http://loinc.org"      }    ],"codeType":"LOINC","loincNum":"34565-2","provider":"clinical-tables","codeSystem":"http://loinc.org","lformsVersion":"29.0.0","copyrightNotice":null,"codingInstructions":null  },"timestamp":"2026-08-30T00:49:28Z"}

Errors

401Missing or invalid x-api-key
404Not found or private
429Rate limit or monthly quota reached

Genes

NCBI gene records — clinicaltables.nlm.nih.gov `ncbi_genes`, direct JSON, no key. The service answers with a positional array [total, codes, extra, displayRows]

GET/v1/health:clinical-tables/genes

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Parameters

Name	Type	In	Description
terms	string	query	Search text. Several partial words are combined with an implicit AND. Required.
page	number	query	Page number. Default 1.
limit	number	query	Items per page. Default 10, max 500. Page times limit may not exceed 7500.
fields	string	query	Comma-separated fields returned as display strings. Allowed: GeneID, HGNC_ID, Symbol, Synonyms, dbXrefs, chromosome, map_location, description, type_of_gene, na_symbol, na_name, Other_designations, Modification_date.
extraFields	string	query	Comma-separated fields returned with their native types, so objects and arrays stay structured. Accepts field:alias. Allowed: GeneID, HGNC_ID, Symbol, Synonyms, dbXrefs, chromosome, map_location, description, type_of_gene, na_symbol, na_name, Other_designations, Modification_date.
searchFields	string	query	Comma-separated fields the search text is matched against. Allowed: GeneID, HGNC_ID, Symbol, Synonyms, dbXrefs, chromosome, map_location, description, type_of_gene, na_symbol, na_name, Other_designations, Modification_date.
codeField	string	query	The single field to report as each item's code. Allowed: GeneID, HGNC_ID, Symbol, Synonyms, dbXrefs, chromosome, map_location, description, type_of_gene, na_symbol, na_name, Other_designations, Modification_date.
filter	string	query	Elasticsearch query-string filter applied on top of the search text. It is not wildcarded automatically.

Example response

{"project":"health:clinical-tables",  "data": {"page":1,"count":3,    "items": [      {"code":"394269","symbol":"BRCA1P1","dbXrefs":"HGNC:HGNC:28470|AllianceGenome:HGNC:28470","synonyms":"LBRCA1|PsiBRCA1|pseudo-BRCA1","chromosome":"17","codeSystem":"NCBI-gene code","description":"BRCA1 pseudogene 1"      },      {"code":"111589215","symbol":"LOC111589215","dbXrefs":"-","synonyms":"-","chromosome":"17","codeSystem":"NCBI-gene code","description":"BRCA1 promoter region"      },      {"code":"101929767","symbol":"BRCA1-OT1","dbXrefs":"HGNC:HGNC:58363","synonyms":"-","chromosome":"17","codeSystem":"NCBI-gene code","description":"BRCA1 overlapping transcript 1"      }    ],"limit":3,"terms":"BRCA1","total":9,"hasMore":true,"nextPage":2,"provider":"clinical-tables"  },"timestamp":"2026-08-30T00:49:28Z"}

Errors

401Missing or invalid x-api-key
404Not found or private
429Rate limit or monthly quota reached

Hcpcs

HCPCS Level II codes — clinicaltables.nlm.nih.gov `hcpcs`, direct JSON, no key. The service answers with a positional array [total, codes, extra, displayRows]

GET/v1/health:clinical-tables/hcpcs

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Parameters

Name	Type	In	Description
terms	string	query	Search text. Several partial words are combined with an implicit AND. Required.
page	number	query	Page number. Default 1.
limit	number	query	Items per page. Default 10, max 500. Page times limit may not exceed 7500.
fields	string	query	Comma-separated fields returned as display strings. Allowed: code, short_desc, long_desc, display, add_dt, term_dt, act_eff_dt, obsolete, is_noc.
extraFields	string	query	Comma-separated fields returned with their native types, so objects and arrays stay structured. Accepts field:alias. Allowed: code, short_desc, long_desc, display, add_dt, term_dt, act_eff_dt, obsolete, is_noc.
searchFields	string	query	Comma-separated fields the search text is matched against. Allowed: code, short_desc, long_desc, display, add_dt, term_dt, act_eff_dt, obsolete, is_noc.
codeField	string	query	The single field to report as each item's code. Allowed: code, short_desc, long_desc, display, add_dt, term_dt, act_eff_dt, obsolete, is_noc.
filter	string	query	Elasticsearch query-string filter applied on top of the search text. It is not wildcarded automatically.

Example response

{"project":"health:clinical-tables",  "data": {"page":1,"count":3,    "items": [      {"code":"E2210","display":"Wheelchair bearings","shortDesc":"Wheelchair bearings"      },      {"code":"K0001","display":"Standard wheelchair","shortDesc":"Standard wheelchair"      },      {"code":"K0003","display":"Lightweight wheelchair","shortDesc":"Lightweight wheelchair"      }    ],"limit":3,"terms":"wheelchair","total":63,"hasMore":true,"nextPage":2,"provider":"clinical-tables"  },"timestamp":"2026-08-30T00:49:28Z"}

Errors

401Missing or invalid x-api-key
404Not found or private
429Rate limit or monthly quota reached

Hpo

Human Phenotype Ontology terms — clinicaltables.nlm.nih.gov `hpo`, direct JSON, no key. The service answers with a positional array [total, codes, extra, displayRows]

GET/v1/health:clinical-tables/hpo

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Parameters

Name	Type	In	Description
terms	string	query	Search text. Several partial words are combined with an implicit AND. Required.
page	number	query	Page number. Default 1.
limit	number	query	Items per page. Default 10, max 500. Page times limit may not exceed 7500.
fields	string	query	Comma-separated fields returned as display strings. Allowed: id, name, definition, def_xref, created_by, creation_date, comment, is_obsolete, replaced_by, consider, alt_id, synonym, synonym.term, synonym.relation, synonym.type, synonym.xref, is_a, is_a.id, is_a.name, xref, xref.id, xref.name, property, property.name, property.value, property.data_type, property.xref.
extraFields	string	query	Comma-separated fields returned with their native types, so objects and arrays stay structured. Accepts field:alias. Allowed: id, name, definition, def_xref, created_by, creation_date, comment, is_obsolete, replaced_by, consider, alt_id, synonym, synonym.term, synonym.relation, synonym.type, synonym.xref, is_a, is_a.id, is_a.name, xref, xref.id, xref.name, property, property.name, property.value, property.data_type, property.xref.
searchFields	string	query	Comma-separated fields the search text is matched against. Allowed: id, name, definition, def_xref, created_by, creation_date, comment, is_obsolete, replaced_by, consider, alt_id, synonym, synonym.term, synonym.relation, synonym.type, synonym.xref, is_a, is_a.id, is_a.name, xref, xref.id, xref.name, property, property.name, property.value, property.data_type, property.xref.
codeField	string	query	The single field to report as each item's code. Allowed: id, name, definition, def_xref, created_by, creation_date, comment, is_obsolete, replaced_by, consider, alt_id, synonym, synonym.term, synonym.relation, synonym.type, synonym.xref, is_a, is_a.id, is_a.name, xref, xref.id, xref.name, property, property.name, property.value, property.data_type, property.xref.
filter	string	query	Elasticsearch query-string filter applied on top of the search text. It is not wildcarded automatically.

Example response

{"project":"health:clinical-tables",  "data": {"page":1,"count":1,    "items": [      {"id":"HP:0001250",        "isA": [          {"id":"HP:0012638","name":"Abnormal nervous system physiology"          }        ],"code":"HP:0001250","name":"Seizure",        "synonym": [          {"term":"Epilepsy","type":"layperson","relation":"RELATED"          },          {"term":"Epileptic seizure","relation":"EXACT"          },          {"term":"Seizures","type":"plural_form","relation":"EXACT"          }        ],"definition":"A seizure is an intermittent abnormality of nervous system physiology characterized by a transient occurrence of signs and/or symptoms due to abnormal excessive or synchronous neuronal activity in the brain"      }    ],"limit":3,"terms":"seizure","total":1,"hasMore":false,"nextPage":null,"provider":"clinical-tables"  },"timestamp":"2026-08-30T00:49:28Z"}

Errors

401Missing or invalid x-api-key
404Not found or private
429Rate limit or monthly quota reached

Icd10

ICD-10-CM diagnosis codes — clinicaltables.nlm.nih.gov, direct JSON, no key. The service answers with a positional array and returns empty strings on a 200

GET/v1/health:clinical-tables/icd10

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Parameters

Name	Type	In	Description
terms	string	query	Search text. Several partial words are combined with an implicit AND. Required.
page	number	query	Page number. Default 1.
limit	number	query	Items per page. Default 10, max 500. Page times limit may not exceed 7500.
fields	string	query	Comma-separated fields returned as display strings. Allowed: code, name.
extraFields	string	query	Comma-separated fields returned with their native types, so objects and arrays stay structured. Accepts field:alias. Allowed: code, name.
searchFields	string	query	Comma-separated fields the search text is matched against. Allowed: code, name.
codeField	string	query	The single field to report as each item's code. Allowed: code, name.
filter	string	query	Elasticsearch query-string filter applied on top of the search text. It is not wildcarded automatically.

Example response

{"project":"health:clinical-tables",  "data": {"page":1,"count":3,    "items": [      {"code":"E11.65","name":"Type 2 diabetes mellitus with hyperglycemia"      },      {"code":"E11.9","name":"Type 2 diabetes mellitus without complications"      },      {"code":"E11.21","name":"Type 2 diabetes mellitus with diabetic nephropathy"      }    ],"limit":3,"terms":"diabetes","total":87,"hasMore":true,"nextPage":2,"provider":"clinical-tables"  },"timestamp":"2026-08-30T00:49:28Z"}

Errors

401Missing or invalid x-api-key
404Not found or private
429Rate limit or monthly quota reached

Icd11

ICD-11 codes — clinicaltables.nlm.nih.gov `icd11_codes`, direct JSON, no key. The service answers with a positional array [total, codes, extra, displayRows]

GET/v1/health:clinical-tables/icd11

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Parameters

Name	Type	In	Description
terms	string	query	Search text. Several partial words are combined with an implicit AND. Required.
page	number	query	Page number. Default 1.
limit	number	query	Items per page. Default 10, max 500. Page times limit may not exceed 7500.
fields	string	query	Comma-separated fields returned as display strings. Allowed: code, title, definition, type, chapter, entityId, source, indexTerm, browserUrl, parent.
extraFields	string	query	Comma-separated fields returned with their native types, so objects and arrays stay structured. Accepts field:alias. Allowed: code, title, definition, type, chapter, entityId, source, indexTerm, browserUrl, parent.
searchFields	string	query	Comma-separated fields the search text is matched against. Allowed: code, title, definition, type, chapter, entityId, source, indexTerm, browserUrl, parent.
codeField	string	query	The single field to report as each item's code. Allowed: code, title, definition, type, chapter, entityId, source, indexTerm, browserUrl, parent.
filter	string	query	Elasticsearch query-string filter applied on top of the search text. It is not wildcarded automatically.
codeType	enum	query	Restrict to stem codes, extension codes, or both. Default category, which is both. One of stem, extension, category.

Example response

{"project":"health:clinical-tables",  "data": {"page":1,"count":3,    "items": [      {"code":"5A10","title":"Type 1 diabetes mellitus","indexTerm":"Type 1 diabetes mellitus; IDDM - [insulin dependent diabetes mellitus]; T1DM - [type 1 diabetes mellitus]; idiopathic insulin-dependent diabetes mellitus without complications; juv…","definition":"Diabetes mellitus type 1 (type 1 diabetes, T1DM, formerly insulin dependent or juvenile diabetes) is a form of diabetes mellitus that results from destruction of insulin-producing …"      },      {"code":"5A13","title":"Diabetes mellitus, other specified type","indexTerm":"Diabetes mellitus, other specified type; Other specified Diabetes mellitus, not Type 1 and not Type 2","definition":"Diabetes mellitus which cannot be classified as either Type 1 or Type 2 diabetes mellitus."      },      {"code":"5A11","title":"Type 2 diabetes mellitus","indexTerm":"Type 2 diabetes mellitus; DM type II; DM2; Diabetic type 2; NIDDM - [non insulin dependent diabetes mellitus]; T2DM - [Type 2 diabetes mellitus]; Type II diabetes mellitus; adult o…","definition":"Diabetes mellitus type 2 (formerly noninsulin-dependent diabetes mellitus (NIDDM) or adult-onset diabetes) is a metabolic disorder that is characterised by high blood glucose in th…"      }    ],"limit":3,"terms":"diabetes","total":81,"hasMore":true,"nextPage":2,"provider":"clinical-tables"  },"timestamp":"2026-08-30T00:49:28Z"}

Errors

401Missing or invalid x-api-key
404Not found or private
429Rate limit or monthly quota reached

Icd9 Dx

ICD-9-CM diagnosis codes — clinicaltables.nlm.nih.gov `icd9cm_dx`, direct JSON, no key. The service answers with a positional array [total, codes, extra, displayRows]

GET/v1/health:clinical-tables/icd9-dx

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Parameters

Name	Type	In	Description
terms	string	query	Search text. Several partial words are combined with an implicit AND. Required.
page	number	query	Page number. Default 1.
limit	number	query	Items per page. Default 10, max 500. Page times limit may not exceed 7500.
fields	string	query	Comma-separated fields returned as display strings. Allowed: code, code_dotted, short_name, long_name.
extraFields	string	query	Comma-separated fields returned with their native types, so objects and arrays stay structured. Accepts field:alias. Allowed: code, code_dotted, short_name, long_name.
searchFields	string	query	Comma-separated fields the search text is matched against. Allowed: code, code_dotted, short_name, long_name.
codeField	string	query	The single field to report as each item's code. Allowed: code, code_dotted, short_name, long_name.
filter	string	query	Elasticsearch query-string filter applied on top of the search text. It is not wildcarded automatically.

Example response

{"project":"health:clinical-tables",  "data": {"page":1,"count":3,    "items": [      {"code":"49390","shortName":"Asthma NOS","codeDotted":"493.90"      },      {"code":"49300","shortName":"Extrinsic asthma NOS","codeDotted":"493.00"      },      {"code":"49310","shortName":"Intrinsic asthma NOS","codeDotted":"493.10"      }    ],"limit":3,"terms":"asthma","total":12,"hasMore":true,"nextPage":2,"provider":"clinical-tables"  },"timestamp":"2026-08-30T00:49:28Z"}

Errors

401Missing or invalid x-api-key
404Not found or private
429Rate limit or monthly quota reached

Icd9 Sg

ICD-9-CM procedure codes — clinicaltables.nlm.nih.gov `icd9cm_sg`, direct JSON, no key. The service answers with a positional array [total, codes, extra, displayRows]

GET/v1/health:clinical-tables/icd9-sg

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Parameters

Name	Type	In	Description
terms	string	query	Search text. Several partial words are combined with an implicit AND. Required.
page	number	query	Page number. Default 1.
limit	number	query	Items per page. Default 10, max 500. Page times limit may not exceed 7500.
fields	string	query	Comma-separated fields returned as display strings. Allowed: code, code_dotted, short_name, long_name.
extraFields	string	query	Comma-separated fields returned with their native types, so objects and arrays stay structured. Accepts field:alias. Allowed: code, code_dotted, short_name, long_name.
searchFields	string	query	Comma-separated fields the search text is matched against. Allowed: code, code_dotted, short_name, long_name.
codeField	string	query	The single field to report as each item's code. Allowed: code, code_dotted, short_name, long_name.
filter	string	query	Elasticsearch query-string filter applied on top of the search text. It is not wildcarded automatically.

Example response

{"project":"health:clinical-tables",  "data": {"page":1,"count":3,    "items": [      {"code":"4701","shortName":"Lap appendectomy","codeDotted":"47.01"      },      {"code":"4709","shortName":"Other appendectomy","codeDotted":"47.09"      },      {"code":"4711","shortName":"Lap incid appendectomy","codeDotted":"47.11"      }    ],"limit":3,"terms":"appendectomy","total":4,"hasMore":true,"nextPage":2,"provider":"clinical-tables"  },"timestamp":"2026-08-30T00:49:28Z"}

Errors

401Missing or invalid x-api-key
404Not found or private
429Rate limit or monthly quota reached

Lab Codes

LOINC panels and forms — clinicaltables.nlm.nih.gov `loinc_items`, direct JSON. This is the panels-and-forms subset of LOINC, not the full six-axis lab table:

GET/v1/health:clinical-tables/lab-codes

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Parameters

Name	Type	In	Description
terms	string	query	Search text. Several partial words are combined with an implicit AND. Required.
page	number	query	Page number. Default 1.
limit	number	query	Items per page. Default 10, max 500. Page times limit may not exceed 7500.
fields	string	query	Comma-separated fields returned as display strings. Allowed: text, LOINC_NUM, LONG_COMMON_NAME, COMPONENT, PROPERTY, RELATEDNAMES2, METHOD_TYP, SHORTNAME, CONSUMER_NAME, SURVEY_QUEST_TEXT, AnswerLists, units, datatype, isCopyrighted, containsCopyrighted, EXTERNAL_COPYRIGHT_NOTICE.
extraFields	string	query	Comma-separated fields returned with their native types, so objects and arrays stay structured. Accepts field:alias. Allowed: text, LOINC_NUM, LONG_COMMON_NAME, COMPONENT, PROPERTY, RELATEDNAMES2, METHOD_TYP, SHORTNAME, CONSUMER_NAME, SURVEY_QUEST_TEXT, AnswerLists, units, datatype, isCopyrighted, containsCopyrighted, EXTERNAL_COPYRIGHT_NOTICE.
searchFields	string	query	Comma-separated fields the search text is matched against. Allowed: text, LOINC_NUM, LONG_COMMON_NAME, COMPONENT, PROPERTY, RELATEDNAMES2, METHOD_TYP, SHORTNAME, CONSUMER_NAME, SURVEY_QUEST_TEXT, AnswerLists, units, datatype, isCopyrighted, containsCopyrighted, EXTERNAL_COPYRIGHT_NOTICE.
codeField	string	query	The single field to report as each item's code. Allowed: text, LOINC_NUM, LONG_COMMON_NAME, COMPONENT, PROPERTY, RELATEDNAMES2, METHOD_TYP, SHORTNAME, CONSUMER_NAME, SURVEY_QUEST_TEXT, AnswerLists, units, datatype, isCopyrighted, containsCopyrighted, EXTERNAL_COPYRIGHT_NOTICE.
filter	string	query	Elasticsearch query-string filter applied on top of the search text. It is not wildcarded automatically.
type	enum	query	Restrict to questions, forms or panels. Default searches questions and panel names together. One of question, form, panel.
available	enum	query	With true, only forms whose definition the form-definition endpoint can return. One of true, false.
excludeCopyrighted	enum	query	With true, drop items that are copyrighted or carry a copyrighted item. Default false. One of true, false.

Example response

{"project":"health:clinical-tables",  "data": {"page":1,"count":3,    "items": [      {"code":"101652-6","text":"Somatotropin & glucose post glucose stimulation panel","loincNum":"101652-6","relatednames2":"After; CHEMISTRY.CHALLENGE TESTING; GH; GH + Glc pst Glc stim pnl; Glu; Glu tol; Gluc; Glucose tolerance; Glucoseur; Growth hormone; GTT; HGH; Human growth hormone; Pan; PANEL.CHAL…","longCommonName":"Somatotropin and glucose post glucose stimulation panel - Serum or Plasma"      },      {"code":"43151-0","text":"Glucose meter device panel","loincNum":"43151-0","relatednames2":"Glu; Gluc; Glucose Meter Device Pnl; Glucoseur; Pan; Panel.devices; Panl; Pnl; Point in time; Random","longCommonName":"Glucose meter device panel"      },      {"code":"74790-7","text":"Glucose challenge panel","loincNum":"74790-7","relatednames2":"Breath; CHEMISTRY.CHALLENGE TESTING; ExG; Exhaled gas; Exhaled gas (=breath); Gases; Glu; Glu tol; Gluc; Glucose HBT; Glucose HBT Pnl; Glucose tolerance; Glucoseur; GTT; Pan; PANEL…","longCommonName":"Glucose challenge (hydrogen breath test) panel - Exhaled gas"      }    ],"limit":3,"terms":"glucose","total":33,"hasMore":true,"nextPage":2,"provider":"clinical-tables"  },"timestamp":"2026-08-30T00:49:28Z"}

Errors

401Missing or invalid x-api-key
404Not found or private
429Rate limit or monthly quota reached

Procedures

Procedure names — clinicaltables.nlm.nih.gov `procedures`, direct JSON, no key. The service answers with a positional array [total, codes, extra, displayRows]

GET/v1/health:clinical-tables/procedures

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Parameters

Name	Type	In	Description
terms	string	query	Search text. Several partial words are combined with an implicit AND. Required.
page	number	query	Page number. Default 1.
limit	number	query	Items per page. Default 10, max 500. Page times limit may not exceed 7500.
fields	string	query	Comma-separated fields returned as display strings. Allowed: primary_name, consumer_name, key_id, term_icd9_code, term_icd9_text, word_synonyms, synonyms, info_link_data.
extraFields	string	query	Comma-separated fields returned with their native types, so objects and arrays stay structured. Accepts field:alias. Allowed: primary_name, consumer_name, key_id, term_icd9_code, term_icd9_text, word_synonyms, synonyms, info_link_data.
searchFields	string	query	Comma-separated fields the search text is matched against. Allowed: primary_name, consumer_name, key_id, term_icd9_code, term_icd9_text, word_synonyms, synonyms, info_link_data.
codeField	string	query	The single field to report as each item's code. Allowed: primary_name, consumer_name, key_id, term_icd9_code, term_icd9_text, word_synonyms, synonyms, info_link_data.
filter	string	query	Elasticsearch query-string filter applied on top of the search text. It is not wildcarded automatically.

Example response

{"project":"health:clinical-tables",  "data": {"page":1,"count":1,    "items": [      {"code":"377","keyId":"377",        "synonyms": [          "appy"        ],"primaryName":"Appendectomy","consumerName":"Appendectomy"      }    ],"limit":3,"terms":"appendectomy","total":1,"hasMore":false,"nextPage":null,"provider":"clinical-tables"  },"timestamp":"2026-08-30T00:49:28Z"}

Errors

401Missing or invalid x-api-key
404Not found or private
429Rate limit or monthly quota reached

Providers Individual

NPI registry — individual providers — clinicaltables.nlm.nih.gov `npi_idv`, direct JSON, no key. The service answers with a positional array [total, codes, extra, displayRows]

GET/v1/health:clinical-tables/providers-individual

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Parameters

Name	Type	In	Description
terms	string	query	Search text. Several partial words are combined with an implicit AND. Required.
page	number	query	Page number. Default 1.
limit	number	query	Items per page. Default 10, max 500. Page times limit may not exceed 7500.
fields	string	query	Comma-separated fields returned as display strings. Allowed: NPI, provider_type, gender, name, name.full, name.last, name.first, name.middle, name.credential, name.prefix, name.suffix, addr_practice, addr_practice.full, addr_practice.line1, addr_practice.line2, addr_practice.city, addr_practice.state, addr_practice.zip, addr_practice.phone, addr_practice.fax, addr_practice.country, addr_mailing, addr_mailing.full, addr_mailing.line1, addr_mailing.line2, addr_mailing.city, addr_mailing.state, addr_mailing.zip, addr_mailing.phone, addr_mailing.fax, addr_mailing.country, name_other, name_other.full, name_other.last, name_other.first, name_other.middle, name_other.credential, name_other.prefix, name_other.suffix, licenses, licenses.taxonomy, licenses.taxonomy.code, licenses.taxonomy.grouping, licenses.taxonomy.classification, licenses.taxonomy.specialization, licenses.medicare, licenses.medicare.spc_code, licenses.medicare.type, other_ids, other_ids.id, other_ids.type, other_ids.issuer, other_ids.state, misc, misc.auth_official, misc.replacement_NPI, misc.EIN, misc.enumeration_date, misc.last_update_date, misc.is_sole_proprietor, misc.is_org_subpart, misc.parent_LBN, misc.parent_TIN.
extraFields	string	query	Comma-separated fields returned with their native types, so objects and arrays stay structured. Accepts field:alias. Allowed: NPI, provider_type, gender, name, name.full, name.last, name.first, name.middle, name.credential, name.prefix, name.suffix, addr_practice, addr_practice.full, addr_practice.line1, addr_practice.line2, addr_practice.city, addr_practice.state, addr_practice.zip, addr_practice.phone, addr_practice.fax, addr_practice.country, addr_mailing, addr_mailing.full, addr_mailing.line1, addr_mailing.line2, addr_mailing.city, addr_mailing.state, addr_mailing.zip, addr_mailing.phone, addr_mailing.fax, addr_mailing.country, name_other, name_other.full, name_other.last, name_other.first, name_other.middle, name_other.credential, name_other.prefix, name_other.suffix, licenses, licenses.taxonomy, licenses.taxonomy.code, licenses.taxonomy.grouping, licenses.taxonomy.classification, licenses.taxonomy.specialization, licenses.medicare, licenses.medicare.spc_code, licenses.medicare.type, other_ids, other_ids.id, other_ids.type, other_ids.issuer, other_ids.state, misc, misc.auth_official, misc.replacement_NPI, misc.EIN, misc.enumeration_date, misc.last_update_date, misc.is_sole_proprietor, misc.is_org_subpart, misc.parent_LBN, misc.parent_TIN.
searchFields	string	query	Comma-separated fields the search text is matched against. Allowed: NPI, provider_type, gender, name, name.full, name.last, name.first, name.middle, name.credential, name.prefix, name.suffix, addr_practice, addr_practice.full, addr_practice.line1, addr_practice.line2, addr_practice.city, addr_practice.state, addr_practice.zip, addr_practice.phone, addr_practice.fax, addr_practice.country, addr_mailing, addr_mailing.full, addr_mailing.line1, addr_mailing.line2, addr_mailing.city, addr_mailing.state, addr_mailing.zip, addr_mailing.phone, addr_mailing.fax, addr_mailing.country, name_other, name_other.full, name_other.last, name_other.first, name_other.middle, name_other.credential, name_other.prefix, name_other.suffix, licenses, licenses.taxonomy, licenses.taxonomy.code, licenses.taxonomy.grouping, licenses.taxonomy.classification, licenses.taxonomy.specialization, licenses.medicare, licenses.medicare.spc_code, licenses.medicare.type, other_ids, other_ids.id, other_ids.type, other_ids.issuer, other_ids.state, misc, misc.auth_official, misc.replacement_NPI, misc.EIN, misc.enumeration_date, misc.last_update_date, misc.is_sole_proprietor, misc.is_org_subpart, misc.parent_LBN, misc.parent_TIN.
codeField	string	query	The single field to report as each item's code. Allowed: NPI, provider_type, gender, name, name.full, name.last, name.first, name.middle, name.credential, name.prefix, name.suffix, addr_practice, addr_practice.full, addr_practice.line1, addr_practice.line2, addr_practice.city, addr_practice.state, addr_practice.zip, addr_practice.phone, addr_practice.fax, addr_practice.country, addr_mailing, addr_mailing.full, addr_mailing.line1, addr_mailing.line2, addr_mailing.city, addr_mailing.state, addr_mailing.zip, addr_mailing.phone, addr_mailing.fax, addr_mailing.country, name_other, name_other.full, name_other.last, name_other.first, name_other.middle, name_other.credential, name_other.prefix, name_other.suffix, licenses, licenses.taxonomy, licenses.taxonomy.code, licenses.taxonomy.grouping, licenses.taxonomy.classification, licenses.taxonomy.specialization, licenses.medicare, licenses.medicare.spc_code, licenses.medicare.type, other_ids, other_ids.id, other_ids.type, other_ids.issuer, other_ids.state, misc, misc.auth_official, misc.replacement_NPI, misc.EIN, misc.enumeration_date, misc.last_update_date, misc.is_sole_proprietor, misc.is_org_subpart, misc.parent_LBN, misc.parent_TIN.
filter	string	query	Elasticsearch query-string filter applied on top of the search text. It is not wildcarded automatically.

Example response

{"project":"health:clinical-tables",  "data": {"page":1,"count":0,"items":[],"limit":3,"terms":"john smith","total":0,"hasMore":false,"nextPage":null,"provider":"clinical-tables"  },"timestamp":"2026-08-30T00:49:28Z"}

Errors

401Missing or invalid x-api-key
404Not found or private
429Rate limit or monthly quota reached

Providers Organisation

NPI registry — organisation providers — clinicaltables.nlm.nih.gov `npi_org`, direct JSON, no key. The service answers with a positional array [total, codes, extra, displayRows]

GET/v1/health:clinical-tables/providers-organisation

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Parameters

Name	Type	In	Description
terms	string	query	Search text. Several partial words are combined with an implicit AND. Required.
page	number	query	Page number. Default 1.
limit	number	query	Items per page. Default 10, max 500. Page times limit may not exceed 7500.
fields	string	query	Comma-separated fields returned as display strings. Allowed: NPI, provider_type, name, name.full, name.last, name.first, name.middle, name.credential, name.prefix, name.suffix, addr_practice, addr_practice.full, addr_practice.line1, addr_practice.line2, addr_practice.city, addr_practice.state, addr_practice.zip, addr_practice.phone, addr_practice.fax, addr_practice.country, addr_mailing, addr_mailing.full, addr_mailing.line1, addr_mailing.line2, addr_mailing.city, addr_mailing.state, addr_mailing.zip, addr_mailing.phone, addr_mailing.fax, addr_mailing.country, name_other, name_other.full, name_other.last, name_other.first, name_other.middle, name_other.credential, name_other.prefix, name_other.suffix, licenses, licenses.taxonomy, licenses.taxonomy.code, licenses.taxonomy.grouping, licenses.taxonomy.classification, licenses.taxonomy.specialization, licenses.medicare, licenses.medicare.spc_code, licenses.medicare.type, other_ids, other_ids.id, other_ids.type, other_ids.issuer, other_ids.state, misc, misc.auth_official, misc.replacement_NPI, misc.EIN, misc.enumeration_date, misc.last_update_date, misc.is_sole_proprietor, misc.is_org_subpart, misc.parent_LBN, misc.parent_TIN.
extraFields	string	query	Comma-separated fields returned with their native types, so objects and arrays stay structured. Accepts field:alias. Allowed: NPI, provider_type, name, name.full, name.last, name.first, name.middle, name.credential, name.prefix, name.suffix, addr_practice, addr_practice.full, addr_practice.line1, addr_practice.line2, addr_practice.city, addr_practice.state, addr_practice.zip, addr_practice.phone, addr_practice.fax, addr_practice.country, addr_mailing, addr_mailing.full, addr_mailing.line1, addr_mailing.line2, addr_mailing.city, addr_mailing.state, addr_mailing.zip, addr_mailing.phone, addr_mailing.fax, addr_mailing.country, name_other, name_other.full, name_other.last, name_other.first, name_other.middle, name_other.credential, name_other.prefix, name_other.suffix, licenses, licenses.taxonomy, licenses.taxonomy.code, licenses.taxonomy.grouping, licenses.taxonomy.classification, licenses.taxonomy.specialization, licenses.medicare, licenses.medicare.spc_code, licenses.medicare.type, other_ids, other_ids.id, other_ids.type, other_ids.issuer, other_ids.state, misc, misc.auth_official, misc.replacement_NPI, misc.EIN, misc.enumeration_date, misc.last_update_date, misc.is_sole_proprietor, misc.is_org_subpart, misc.parent_LBN, misc.parent_TIN.
searchFields	string	query	Comma-separated fields the search text is matched against. Allowed: NPI, provider_type, name, name.full, name.last, name.first, name.middle, name.credential, name.prefix, name.suffix, addr_practice, addr_practice.full, addr_practice.line1, addr_practice.line2, addr_practice.city, addr_practice.state, addr_practice.zip, addr_practice.phone, addr_practice.fax, addr_practice.country, addr_mailing, addr_mailing.full, addr_mailing.line1, addr_mailing.line2, addr_mailing.city, addr_mailing.state, addr_mailing.zip, addr_mailing.phone, addr_mailing.fax, addr_mailing.country, name_other, name_other.full, name_other.last, name_other.first, name_other.middle, name_other.credential, name_other.prefix, name_other.suffix, licenses, licenses.taxonomy, licenses.taxonomy.code, licenses.taxonomy.grouping, licenses.taxonomy.classification, licenses.taxonomy.specialization, licenses.medicare, licenses.medicare.spc_code, licenses.medicare.type, other_ids, other_ids.id, other_ids.type, other_ids.issuer, other_ids.state, misc, misc.auth_official, misc.replacement_NPI, misc.EIN, misc.enumeration_date, misc.last_update_date, misc.is_sole_proprietor, misc.is_org_subpart, misc.parent_LBN, misc.parent_TIN.
codeField	string	query	The single field to report as each item's code. Allowed: NPI, provider_type, name, name.full, name.last, name.first, name.middle, name.credential, name.prefix, name.suffix, addr_practice, addr_practice.full, addr_practice.line1, addr_practice.line2, addr_practice.city, addr_practice.state, addr_practice.zip, addr_practice.phone, addr_practice.fax, addr_practice.country, addr_mailing, addr_mailing.full, addr_mailing.line1, addr_mailing.line2, addr_mailing.city, addr_mailing.state, addr_mailing.zip, addr_mailing.phone, addr_mailing.fax, addr_mailing.country, name_other, name_other.full, name_other.last, name_other.first, name_other.middle, name_other.credential, name_other.prefix, name_other.suffix, licenses, licenses.taxonomy, licenses.taxonomy.code, licenses.taxonomy.grouping, licenses.taxonomy.classification, licenses.taxonomy.specialization, licenses.medicare, licenses.medicare.spc_code, licenses.medicare.type, other_ids, other_ids.id, other_ids.type, other_ids.issuer, other_ids.state, misc, misc.auth_official, misc.replacement_NPI, misc.EIN, misc.enumeration_date, misc.last_update_date, misc.is_sole_proprietor, misc.is_org_subpart, misc.parent_LBN, misc.parent_TIN.
filter	string	query	Elasticsearch query-string filter applied on top of the search text. It is not wildcarded automatically.

Example response

{"project":"health:clinical-tables",  "data": {"page":1,"count":3,    "items": [      {"npi":"1821205840","code":"1821205840",        "name": {"full":"HOSPITAL"        },"nameFull":"HOSPITAL",        "addrPractice": {"zip":"75115","city":"DESOTO","full":"605 AUSTIN DR, DESOTO, TX 75115","zip4":"6605","line1":"605 AUSTIN DR","phone":"(972) 230-0854","state":"TX","country":"US"        },"providerType":"Hospital-General"      },      {"npi":"1922162403","code":"1922162403",        "name": {"full":"INNOVA HOSPITAL HOUSTON LP DBA INNOVA HOSPITAL HOUSTON"        },"nameFull":"INNOVA HOSPITAL HOUSTON LP DBA INNOVA HOSPITAL HOUSTON",        "addrPractice": {"zip":"77004","city":"HOUSTON","full":"2001 HERMANN DR, HOUSTON, TX 77004","zip4":"7321","line1":"2001 HERMANN DR","phone":"(713) 358-5300","state":"TX","country":"US"        },"providerType":"Hospital-General"      }    ],"limit":3,"terms":"hospital","total":5386,"hasMore":true,"nextPage":2,"provider":"clinical-tables"  },"timestamp":"2026-08-30T00:49:28Z"}

Errors

401Missing or invalid x-api-key
404Not found or private
429Rate limit or monthly quota reached

Refseqs

RefSeq transcript accessions — clinicaltables.nlm.nih.gov `refseqs`, direct JSON, no key. The service answers with a positional array [total, codes, extra, displayRows]

GET/v1/health:clinical-tables/refseqs

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Parameters

Name	Type	In	Description
terms	string	query	Search text. Several partial words are combined with an implicit AND. Required.
page	number	query	Page number. Default 1.
limit	number	query	Items per page. Default 10, max 500. Page times limit may not exceed 7500.
fields	string	query	Comma-separated fields returned as display strings. Allowed: RefSeq, gene, NP_RefSeq, NC_RefSeq.
extraFields	string	query	Comma-separated fields returned with their native types, so objects and arrays stay structured. Accepts field:alias. Allowed: RefSeq, gene, NP_RefSeq, NC_RefSeq.
searchFields	string	query	Comma-separated fields the search text is matched against. Allowed: RefSeq, gene, NP_RefSeq, NC_RefSeq.
codeField	string	query	The single field to report as each item's code. Allowed: RefSeq, gene, NP_RefSeq, NC_RefSeq.
filter	string	query	Elasticsearch query-string filter applied on top of the search text. It is not wildcarded automatically.

Example response

{"project":"health:clinical-tables",  "data": {"page":1,"count":3,    "items": [      {"code":"NM_007300.3","gene":"BRCA1","refSeq":"NM_007300.3","npRefSeq":"NP_009231.2"      },      {"code":"NR_027676.1","gene":"BRCA1","refSeq":"NR_027676.1"      },      {"code":"NM_007294.3","gene":"BRCA1","refSeq":"NM_007294.3","npRefSeq":"NP_009225.1"      }    ],"limit":3,"terms":"BRCA1","total":11,"hasMore":true,"nextPage":2,"provider":"clinical-tables"  },"timestamp":"2026-08-30T00:49:28Z"}

Errors

401Missing or invalid x-api-key
404Not found or private
429Rate limit or monthly quota reached

Search

Generic Clinical Table Search — one grammar over all 22 keyless NLM tables. The escape hatch for the per-table endpoints: a table added upstream is reachable here without a new handler.

GET/v1/health:clinical-tables/search

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Parameters

Name	Type	In	Description
table	enum	query	The NLM clinical table to search. One of conditions, cosmic_struct, cytogenetic_locs, dbvar, disease_names, drug_ingredients, hcpcs, hpo, icd10cm, icd11_codes, icd9cm_dx, icd9cm_sg, loinc_items, ncbi_genes, npi_idv, npi_org, procedures, refseqs, rxterms, snps, star_alleles, ucum. Required.
terms	string	query	Search text. Several partial words are combined with an implicit AND. Required.
page	number	query	Page number. Default 1.
limit	number	query	Items per page. Default 10, max 500. Page times limit may not exceed 7500.
fields	string	query	Comma-separated fields returned as display strings. Each table has its own field list, and a name outside it is rejected rather than passed on.
extraFields	string	query	Comma-separated fields returned with their native types, so objects and arrays stay structured. Accepts field:alias.
searchFields	string	query	Comma-separated fields the search text is matched against.
codeField	string	query	The single field to report as each item's code.
filter	string	query	Elasticsearch query-string filter applied on top of the search text. It is not wildcarded automatically.
type	enum	query	loinc_items only. Restrict to questions, forms or panels. One of question, form, panel.
available	enum	query	loinc_items only. With true, only forms whose definition this service can return. One of true, false.
excludeCopyrighted	enum	query	loinc_items only. With true, drop copyrighted items. Default false. One of true, false.
codeType	enum	query	icd11_codes only. Restrict to stem codes, extension codes, or both. One of stem, extension, category.
genomeBuild	enum	query	cosmic_struct only. GRCh human genome build the coordinates refer to. One of 37, 38.

Example response

{"project":"health:clinical-tables",  "data": {"page":1,"count":10,    "items": [      {"code":"E23.2","name":"Diabetes insipidus"      },      {"code":"N25.1","name":"Nephrogenic diabetes insipidus"      },      {"code":"P70.2","name":"Neonatal diabetes mellitus"      },      {"code":"O24.92","name":"Unspecified diabetes mellitus in childbirth"      },      {"code":"Z83.3","name":"Family history of diabetes mellitus"      },      {"code":"Z86.32","name":"Personal history of gestational diabetes"      },      {"code":"E10.65","name":"Type 1 diabetes mellitus with hyperglycemia"      },      {"code":"E10.9","name":"Type 1 diabetes mellitus without complications"      }    ],"limit":10,"table":"icd10cm","terms":"diabetes","total":481,"hasMore":true,"nextPage":2,"provider":"clinical-tables"  },"timestamp":"2026-08-30T00:49:28Z"}

Errors

401Missing or invalid x-api-key
404Not found or private
429Rate limit or monthly quota reached

Snps

dbSNP reference SNPs — clinicaltables.nlm.nih.gov `snps`, direct JSON, no key. The service answers with a positional array [total, codes, extra, displayRows]

GET/v1/health:clinical-tables/snps

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Parameters

Name	Type	In	Description
terms	string	query	Search text. Several partial words are combined with an implicit AND. Required.
page	number	query	Page number. Default 1.
limit	number	query	Items per page. Default 10, max 500. Page times limit may not exceed 7500.
fields	string	query	Comma-separated fields returned as display strings. Allowed: rsNum, 38.alleles, 38.chr, 38.pos, 38.gene, 38.assembly, 38.seqID, 37.alleles, 37.chr, 37.pos, 37.gene, 37.assembly, 37.seqID.
extraFields	string	query	Comma-separated fields returned with their native types, so objects and arrays stay structured. Accepts field:alias. Allowed: rsNum, 38.alleles, 38.chr, 38.pos, 38.gene, 38.assembly, 38.seqID, 37.alleles, 37.chr, 37.pos, 37.gene, 37.assembly, 37.seqID.
searchFields	string	query	Comma-separated fields the search text is matched against. Allowed: rsNum, 38.alleles, 38.chr, 38.pos, 38.gene, 38.assembly, 38.seqID, 37.alleles, 37.chr, 37.pos, 37.gene, 37.assembly, 37.seqID.
codeField	string	query	The single field to report as each item's code. Allowed: rsNum, 38.alleles, 38.chr, 38.pos, 38.gene, 38.assembly, 38.seqID, 37.alleles, 37.chr, 37.pos, 37.gene, 37.assembly, 37.seqID.
filter	string	query	Elasticsearch query-string filter applied on top of the search text. It is not wildcarded automatically.

Example response

{"project":"health:clinical-tables",  "data": {"page":1,"count":3,    "items": [      {"code":"rs1000","chr38":"6","pos38":"32186117","rsNum":"rs1000"      },      {"code":"rs1000000629","chr38":"6","pos38":"33235706","rsNum":"rs1000000629"      },      {"code":"rs1000001594","chr38":"6","pos38":"33021616","rsNum":"rs1000001594"      }    ],"limit":3,"terms":"rs1000","total":10000,"hasMore":true,"nextPage":2,"provider":"clinical-tables"  },"timestamp":"2026-08-30T00:49:28Z"}

Errors

401Missing or invalid x-api-key
404Not found or private
429Rate limit or monthly quota reached

Star Alleles

Pharmacogenomic star alleles — clinicaltables.nlm.nih.gov `star_alleles`, direct JSON, no key. The service answers with a positional array [total, codes, extra, displayRows]

GET/v1/health:clinical-tables/star-alleles

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Parameters

Name	Type	In	Description
terms	string	query	Search text. Several partial words are combined with an implicit AND. Required.
page	number	query	Page number. Default 1.
limit	number	query	Items per page. Default 10, max 500. Page times limit may not exceed 7500.
fields	string	query	Comma-separated fields returned as display strings. Allowed: StarAlleleName, GenBank, ProteinAffected, cDNANucleotideChanges, GeneNucleotideChange, XbaIHaplotype, RFLP, OtherNames, ProteinChange, InVivoEnzymeActivity, InVitroEnzymeActivity, References, ClinicalPhenotype, Notes.
extraFields	string	query	Comma-separated fields returned with their native types, so objects and arrays stay structured. Accepts field:alias. Allowed: StarAlleleName, GenBank, ProteinAffected, cDNANucleotideChanges, GeneNucleotideChange, XbaIHaplotype, RFLP, OtherNames, ProteinChange, InVivoEnzymeActivity, InVitroEnzymeActivity, References, ClinicalPhenotype, Notes.
searchFields	string	query	Comma-separated fields the search text is matched against. Allowed: StarAlleleName, GenBank, ProteinAffected, cDNANucleotideChanges, GeneNucleotideChange, XbaIHaplotype, RFLP, OtherNames, ProteinChange, InVivoEnzymeActivity, InVitroEnzymeActivity, References, ClinicalPhenotype, Notes.
codeField	string	query	The single field to report as each item's code. Allowed: StarAlleleName, GenBank, ProteinAffected, cDNANucleotideChanges, GeneNucleotideChange, XbaIHaplotype, RFLP, OtherNames, ProteinChange, InVivoEnzymeActivity, InVitroEnzymeActivity, References, ClinicalPhenotype, Notes.
filter	string	query	Elasticsearch query-string filter applied on top of the search text. It is not wildcarded automatically.

Example response

{"project":"health:clinical-tables",  "data": {"page":1,"count":3,    "items": [      {"code":"CYP2D6*18","otherNames":"CYP2D6(J9)","xbaIHaplotype":"29","starAlleleName":"CYP2D6*18"      },      {"code":"CYP2D6*1A","genBank":"M33388.1","otherNames":"Wild-type","xbaIHaplotype":"29","starAlleleName":"CYP2D6*1A"      },      {"code":"CYP2D6*1B","genBank":"M33388.1","xbaIHaplotype":"29","starAlleleName":"CYP2D6*1B"      }    ],"limit":3,"terms":"CYP2D6","total":168,"hasMore":true,"nextPage":2,"provider":"clinical-tables"  },"timestamp":"2026-08-30T00:49:28Z"}

Errors

401Missing or invalid x-api-key
404Not found or private
429Rate limit or monthly quota reached

Units

UCUM units of measure — clinicaltables.nlm.nih.gov `ucum`, direct JSON, no key. The service answers with a positional array [total, codes, extra, displayRows]

GET/v1/health:clinical-tables/units

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Parameters

Name	Type	In	Description
terms	string	query	Search text. Several partial words are combined with an implicit AND. Required.
page	number	query	Page number. Default 1.
limit	number	query	Items per page. Default 10, max 500. Page times limit may not exceed 7500.
fields	string	query	Comma-separated fields returned as display strings. Allowed: cs_code, name, category, synonyms, loinc_property, guidance, source, is_simple, cs_code_tokens.
extraFields	string	query	Comma-separated fields returned with their native types, so objects and arrays stay structured. Accepts field:alias. Allowed: cs_code, name, category, synonyms, loinc_property, guidance, source, is_simple, cs_code_tokens.
searchFields	string	query	Comma-separated fields the search text is matched against. Allowed: cs_code, name, category, synonyms, loinc_property, guidance, source, is_simple, cs_code_tokens.
codeField	string	query	The single field to report as each item's code. Allowed: cs_code, name, category, synonyms, loinc_property, guidance, source, is_simple, cs_code_tokens.
filter	string	query	Elasticsearch query-string filter applied on top of the search text. It is not wildcarded automatically.

Example response

{"project":"health:clinical-tables",  "data": {"page":1,"count":1,    "items": [      {"code":"mg","name":"milligram","csCode":"mg","category":"Clinical","synonyms":"milligrams","csCodeTokens":"mg"      }    ],"limit":3,"terms":"mg","total":1,"hasMore":false,"nextPage":null,"provider":"clinical-tables"  },"timestamp":"2026-08-30T00:49:28Z"}

Errors

401Missing or invalid x-api-key
404Not found or private
429Rate limit or monthly quota reached

Try it

Live request with your key

const data = await client.run(  "health:clinical-tables",  "answer-list",  { loincNum: "45592-3" });

Clinical Tables

NLM Clinical Table Search Service — 22 keyless code systems including LOINC, ICD-10-CM, ICD-11, RxTerms, HPO, HCPCS, NPI, UCUM and genomics tables.

25 endpoints67 calls25/25 passing

Get API key

LOINC answer list for one question code — clinicaltables.nlm.nih.gov, direct JSON. Sits outside the /api/<table>/v3/search grammar: its own path, one code in,

GET/v1/…clinical-tables/answer-list

passing · 2.1s5m cache

Try it

Parameters

loincNum

string · query · required

LOINC code of the question whose answer list to return.

Example response

{"project":"health:clinical-tables",  "data": {"count":7,    "items": [      {"code":"LA12637-7","text":"Independent - no help or staff oversight at any time","sequence":1      },      {"code":"LA12638-5","text":"Supervision - oversight, encouragement or cueing","sequence":2      },      {"code":"LA12639-3","text":"Limited assistance - resident highly involved in activity; staff provide guided maneuvering of limbs or other non-weight-bearing assistance","sequence":3      },      {"code":"LA12640-1","text":"Extensive assistance - resident involved in activity, staff provide weight-bearing support","sequence":4      },      {"code":"LA12641-9","text":"Total dependence - full staff performance every time during entire 7-day period","sequence":5      },      {"code":"LA12642-7","text":"Activity occurred only once or twice - activity did occur but only once or twice","sequence":6      },      {"code":"LA18614-0","text":"Activity did not occur - activity did not occur or family and/or non-facility staff provided care 100% of the time for that activity over the entire 7-day period","sequence":7      }    ],"loincNum":"45592-3","provider":"clinical-tables"  },"timestamp":"2026-08-30T00:49:28Z"}

Errors

401Missing or invalid x-api-key
404Not found or private
429Rate limit or monthly quota reached

Code

const data = await client.run(  "health:clinical-tables",  "answer-list",  { loincNum: "45592-3" });