ICD-9-CM diagnosis code (retired)
E923.9 — Accident caused by unspecified explosive material
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 E923.9
E923.9 is an ICD-9-CM diagnosis code for accident caused by unspecified explosive material. 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, W40.9XXA (Explosion of unspecified explosive materials, initial encounter). The match is approximate, so confirm it against the record.
ICD-10-CM equivalents
- W40.9XXAExplosion of unspecified explosive materials, initial encounterapproximate
Common questions about E923.9
What is the ICD-10 code for ICD-9 E923.9?
- The GEMs map E923.9 to ICD-10-CM W40.9XXA.
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.