ICD-9-CM diagnosis code (retired)
V11.4 — Personal history of combat and operational stress reaction
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 V11.4
V11.4 is an ICD-9-CM diagnosis code for personal history of combat and operational stress reaction. 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, Z86.51 (Personal history of combat and operational stress reaction). The match is exact.
ICD-10-CM equivalents
- Z86.51Personal history of combat and operational stress reactionexact match
Common questions about V11.4
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.