ICD-9-CM diagnosis code (retired)
311 — Depressive disorder, not elsewhere classified
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 311
311 is an ICD-9-CM diagnosis code for depressive disorder, not elsewhere classified. 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, F32.9 (Major depressive disorder, single episode, unspecified). The match is approximate, so confirm it against the record.
ICD-10-CM equivalents
- F32.9Major depressive disorder, single episode, unspecifiedapproximate
Common questions about 311
What is the ICD-10 code for ICD-9 311?
- The GEMs map 311 to ICD-10-CM F32.9.
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.