UMLS · H · C0455569

C0455569

H/O: skin disorder

# same page, as API
GET api.autoicdapi.com/v1/reference/umls/C0455569
GET api.autoicdapi.com/v1/translate?code=C0455569&from=umls&to=snomed-ct

UMLS C0455569, plainly answered

What is UMLS code C0455569?
UMLS CUI C0455569 is "H/O: skin disorder".
Which terminologies does UMLS C0455569 bridge?
H/O: skin disorder (CUI C0455569) groups: 4 SNOMED CT concepts, 1 ICD-10 code.
What is the ICD-10 equivalent of UMLS C0455569?
H/O: skin disorder maps to ICD-10 code MTHU005556.
What SNOMED CT concept matches UMLS C0455569?
H/O: skin disorder corresponds to SNOMED CT concepts 138828005, 138833009, 161560005, and 1 more.
What is UMLS?
The Unified Medical Language System is the NLM's meta-terminology that unifies SNOMED CT, ICD-10, ICD-11, RxNorm, LOINC, MeSH, and around 200 other source vocabularies under a single concept identifier (CUI). One UMLS CUI can group dozens of synonymous codes from different terminologies.
What is a CUI and why does it matter?
A CUI is a stable identifier (like C0011860) that points at a single clinical idea regardless of how that idea is encoded in any specific vocabulary. CUIs are the most reliable way to bridge between terminologies when you need to compare or merge data from multiple sources.
How does UMLS help with cross-mapping?
Every UMLS concept page lists the codes it groups together. That gives you a free crosswalk: a SNOMED concept and an ICD-10 code that share a CUI describe the same clinical idea. Our cross_references API returns these groupings inline.
Is the API free to use?
Browsing the directory is free. Programmatic /v1/reference/umls/* access needs an API key. Production volume requires a paid tier.
How fresh is the UMLS data?
We track NLM's twice-yearly releases (May AB and November AB). Each release brings new concepts, retirements, and atom updates from the source vocabularies, and our index reflects them within the same week.
Do I need a UMLS license?
Yes. The UMLS Metathesaurus License Agreement is free but requires an NLM UTS account. Customers in production need their own license. Free-tier evaluation use is permitted under the standard terms.