About this page
Where the answers come from. Every result is fetched live from CARTOS , the public FHIR terminology service run by ONC, part of the US Department of Health and Human Services. When you search, your query is sent from your browser directly to cartos.healthit.gov, where HealthIT.gov's privacy policy applies. This page has no server of its own, sets no cookies, runs no analytics, and stores nothing except a copy of the small vaccine list in your browser. Your search also appears in the page address after the # sign, so a bookmarked or shared link carries the words or code you typed. Do not type anything that identifies a person.
An educational demo, not a clinical or production tool. ONC describes the CARTOS API as intended for terminology discovery, design-time queries and validation, research, and periodic retrieval of terminology content, and says production clinical applications must not rely on it for runtime queries (Cartos User Guide, as of September 2, 2026). This page uses it the way ONC intends: one interactive lookup at a time, at the pace a person types, within the published rate limits. Do not use this page, or the CARTOS API behind it, inside a production clinical system or for patient care decisions. Organizations that need terminology at runtime should run their own terminology service.
Not medical advice. A code's official label is the name a computer system uses for it. It is not a diagnosis, a treatment recommendation, or an explanation of your care, and terms shown here may be out of date or incomplete. Talk to your clinician about anything on your records.
No affiliation or endorsement. This is an independent hobby project. It is not affiliated with, endorsed by, or supported by ONC, HHS, the National Library of Medicine, the CDC, SNOMED International, Regenstrief Institute, or HL7 International. Reference to those organizations and their vocabularies is for attribution only.
What it covers, and what it can't. Word searches go through the HL7 US Core value sets for conditions, medications, lab tests, and procedures, plus the CDC CVX list. A code that is missing here may still be valid; it may sit outside those lists or belong to a code set CARTOS does not carry, such as CPT, HCPCS, or NDC. A code is never "wrong" just because this page cannot find it.
Be gentle with a shared service. CARTOS allows about 2,000 requests per 5 minutes per address. This page waits between keystrokes, reuses answers it already has, shows at most 20 results at a time, and pauses when CARTOS says to slow down. Please do not script against it.
Vocabulary licenses and required notices
The terminology content shown on this page belongs to its stewards and is used under their terms. CARTOS's terms of use make each user responsible for following those terms, so here they are, in the wording each steward requires.
SNOMED CT. This material includes SNOMED Clinical Terms® (SNOMED CT®) which is used by permission of the International Health Terminology Standards Development Organisation (IHTSDO). All rights reserved. SNOMED CT®, was originally created by The College of American Pathologists. "SNOMED" and "SNOMED CT" are registered trademarks of the IHTSDO.LOINC. This material contains content from LOINC (http://loinc.org ). LOINC is copyright © Regenstrief Institute, Inc. and the Logical Observation Identifiers Names and Codes (LOINC) Committee and is available at no cost under the license at http://loinc.org/license . LOINC® is a registered United States trademark of Regenstrief Institute, Inc.RxNorm. This product uses publicly available data courtesy of the U.S. National Library of Medicine (NLM), National Institutes of Health, Department of Health and Human Services; NLM is not responsible for the product and does not endorse or recommend this or any other product.
More about these licenses, and the public-domain sources
The SNOMED CT notice is the text required by clause 8.3.1 of the SNOMED CT Affiliate License Agreement ; the IHTSDO now trades as SNOMED International. The SNOMED CT US Edition version CARTOS served is shown on each decoded result. SNOMED CT US Edition is distributed in the United States by the National Library of Medicine. Use in the US is free of charge but requires the Affiliate License, obtained through the free UMLS Metathesaurus License . If you reuse this code, you are responsible for your own license.
RxNorm content is subject to the RxNorm terms of service . Drug names shown here may lag the current RxNorm release; the RxNorm version CARTOS served is shown on each decoded result.
ICD-10-CM is maintained by the CDC National Center for Health Statistics and CVX by the CDC; both are works of the US government in the public domain. The US Core value sets used for word search are published by HL7 International . HL7® and FHIR® are registered trademarks of Health Level Seven International. Material from HealthIT.gov is federal government information in the public domain; this page attributes it to HealthIT.gov as requested.
As is. The stewards above and the author of this page provide the content and the code without warranty of any kind, express or implied, and accept no liability for errors, omissions, or any use made of them.
The code of this page is © 2026 Jeffrey A. Brick and released under the MIT License . Source on GitHub . The MIT License covers the code only, not the terminology content.