C0004604
Back Pain
Concept
CUIC0004604
PreferredBack Pain
Cross-maps
SNOMED139146005
SNOMED139148006
SNOMED139154007
SNOMED156651006
SNOMED161889002
SNOMED161891005
ICD-10M54
ICD-10M54.9
ICD-10MTHU023859
ICD-10MTHU059603
ICD-10MTHU065196
ICD-10MTHU065291
ICD-11ME84.Z
LOINCLA30215-0
LOINCLA31749-7
LOINCLP74526-2
LOINCMTHU020857
Source vocabularies
Atoms not loaded for this concept.
# same page, as API
GET api.autoicdapi.com/v1/reference/umls/C0004604
GET api.autoicdapi.com/v1/translate?code=C0004604&from=umls&to=snomed-ct
Common questions
What is the UMLS CUI for Back Pain?
Back Pain is coded as C0004604 in UMLS.
What is UMLS code C0004604?
C0004604 is the UMLS identifier for Back Pain. It is included in the current NLM UMLS Metathesaurus release.
What is the ICD-10-CM mapping for C0004604?
C0004604 maps to 6 ICD-10-CM codes (M54, M54.9, MTHU023859, MTHU059603, MTHU065196, and 1 more).
What is the ICD-11 mapping for C0004604?
C0004604 maps to ICD-11 ME84.Z.
UMLS, plainly answered
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.