C4543560

UMLS CUI C4543560 is "RDW (erythrocyte distribution width) calculation technique".

RDW (erythrocyte distribution width) calculation technique (CUI C4543560) groups: 1 SNOMED CT concept.

RDW (erythrocyte distribution width) calculation technique corresponds to SNOMED CT concept 735149004.

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.

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.

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