ICD-9-CM diagnosis code (retired)
974.2 — Poisoning by carbonic acid anhydrase inhibitors
About ICD-9-CM 974.2
974.2 is an ICD-9-CM diagnosis code for poisoning by carbonic acid anhydrase inhibitors. 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 T50.2X1A (Poisoning by carbonic-anhydrase inhibitors, benzothiadiazides and other diuretics, accidental (unintentional), initial encounter), T50.2X2A (Poisoning by carbonic-anhydrase inhibitors, benzothiadiazides and other diuretics, intentional self-harm, initial encounter) and T50.2X3A (Poisoning by carbonic-anhydrase inhibitors, benzothiadiazides and other diuretics, assault, initial encounter). All of these are approximate matches, so review the record to pick the right one.
ICD-10-CM equivalents
- T50.2X1APoisoning by carbonic-anhydrase inhibitors, benzothiadiazides and other diuretics, accidental (unintentional), initial encounterapproximate
- T50.2X2APoisoning by carbonic-anhydrase inhibitors, benzothiadiazides and other diuretics, intentional self-harm, initial encounterapproximate
- T50.2X3APoisoning by carbonic-anhydrase inhibitors, benzothiadiazides and other diuretics, assault, initial encounterapproximate
- T50.2X4APoisoning by carbonic-anhydrase inhibitors, benzothiadiazides and other diuretics, undetermined, initial encounterapproximate
Common questions about 974.2
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.