ICD-9-CM diagnosis code (retired)
989.0 — Toxic effect of hydrocyanic acid and cyanides
About ICD-9-CM 989.0
989.0 is an ICD-9-CM diagnosis code for toxic effect of hydrocyanic acid and cyanides. 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 4 ICD-10-CM codes, such as T65.0X1A (Toxic effect of cyanides, accidental (unintentional), initial encounter), T65.0X2A (Toxic effect of cyanides, intentional self-harm, initial encounter) and T65.0X3A (Toxic effect of cyanides, assault, initial encounter). All of these are approximate matches, so review the record to pick the right one.
ICD-10-CM equivalents
- T65.0X1AToxic effect of cyanides, accidental (unintentional), initial encounterapproximate
- T65.0X2AToxic effect of cyanides, intentional self-harm, initial encounterapproximate
- T65.0X3AToxic effect of cyanides, assault, initial encounterapproximate
- T65.0X4AToxic effect of cyanides, undetermined, initial encounterapproximate
Common questions about 989.0
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.