ICD-9-CM diagnosis code (retired)
234.9 — Carcinoma in situ, site unspecified
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 234.9
234.9 is an ICD-9-CM diagnosis code for carcinoma in situ, site unspecified. 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, D09.9 (Carcinoma in situ, unspecified). The match is exact.
ICD-10-CM equivalents
- D09.9Carcinoma in situ, unspecifiedexact match
Common questions about 234.9
What is the ICD-10 code for ICD-9 234.9?
- The GEMs map 234.9 to ICD-10-CM D09.9.
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.