ICD-9-CM diagnosis code (retired)
204.10 — Chronic lymphoid leukemia, without mention of having achieved remission
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 204.10
204.10 is an ICD-9-CM diagnosis code for chronic lymphoid leukemia, without mention of having achieved remission. 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, C91.10 (Chronic lymphocytic leukemia of B-cell type not having achieved remission). The match is exact.
ICD-10-CM equivalents
- C91.10Chronic lymphocytic leukemia of B-cell type not having achieved remissionexact match
Common questions about 204.10
What is the ICD-10 code for ICD-9 204.10?
- The GEMs map 204.10 to ICD-10-CM C91.10.
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.