ICD-9-CM diagnosis code (retired)
551.1 — Umbilical hernia with gangrene
ICD-9-CM was replaced by ICD-10 on October 1, 2015. These are the ICD-10-CM equivalents from the CMS General Equivalence Mappings.
About ICD-9-CM 551.1
551.1 is an ICD-9-CM diagnosis code for umbilical hernia with gangrene. ICD-9-CM was retired for U.S. claims on October 1, 2015, when ICD-10-CM took over.
The CMS General Equivalence Mappings translate it to one ICD-10-CM code, K42.1 (Umbilical hernia with gangrene). The match is exact.
ICD-10-CM equivalents
- K42.1Umbilical hernia with gangreneexact match
Common questions about 551.1
What is the ICD-10 code for ICD-9 551.1?
- The GEMs map 551.1 to ICD-10-CM K42.1.
GEMs are a translation aid, not a substitute for coding from the record. The 2027 ICD-10 code set has changed since the last GEMs release in 2018. Page updated September 29, 2026.