ICD-9-CM diagnosis code (retired)
780.02 — Transient alteration of awareness
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 780.02
780.02 is an ICD-9-CM diagnosis code for transient alteration of awareness. 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, R40.4 (Transient alteration of awareness). The match is exact.
ICD-10-CM equivalents
- R40.4Transient alteration of awarenessexact match
Common questions about 780.02
What is the ICD-10 code for ICD-9 780.02?
- The GEMs map 780.02 to ICD-10-CM R40.4.
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.