ICD-9-CM diagnosis code (retired)
987.9 — Toxic effect of unspecified gas, fume, or vapor
About ICD-9-CM 987.9
987.9 is an ICD-9-CM diagnosis code for toxic effect of unspecified gas, fume, or vapor. 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 8 ICD-10-CM codes, such as T59.811A (Toxic effect of smoke, accidental (unintentional), initial encounter), T59.812A (Toxic effect of smoke, intentional self-harm, initial encounter) and T59.813A (Toxic effect of smoke, assault, initial encounter). All of these are approximate matches, so review the record to pick the right one.
ICD-10-CM equivalents
- T59.811AToxic effect of smoke, accidental (unintentional), initial encounterapproximate
- T59.812AToxic effect of smoke, intentional self-harm, initial encounterapproximate
- T59.813AToxic effect of smoke, assault, initial encounterapproximate
- T59.814AToxic effect of smoke, undetermined, initial encounterapproximate
- T59.91XAToxic effect of unspecified gases, fumes and vapors, accidental (unintentional), initial encounterapproximate
- T59.92XAToxic effect of unspecified gases, fumes and vapors, intentional self-harm, initial encounterapproximate
- T59.93XAToxic effect of unspecified gases, fumes and vapors, assault, initial encounterapproximate
- T59.94XAToxic effect of unspecified gases, fumes and vapors, undetermined, initial encounterapproximate
Common questions about 987.9
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.