ICD-9-CM diagnosis code (retired)
977.2 — Poisoning by antidotes and chelating agents, not elsewhere classified
About ICD-9-CM 977.2
977.2 is an ICD-9-CM diagnosis code for poisoning by antidotes and chelating agents, not elsewhere classified. 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 T50.6X1A (Poisoning by antidotes and chelating agents, accidental (unintentional), initial encounter), T50.6X2A (Poisoning by antidotes and chelating agents, intentional self-harm, initial encounter) and T50.6X3A (Poisoning by antidotes and chelating agents, assault, initial encounter). All of these are approximate matches, so review the record to pick the right one.
ICD-10-CM equivalents
- T50.6X1APoisoning by antidotes and chelating agents, accidental (unintentional), initial encounterapproximate
- T50.6X2APoisoning by antidotes and chelating agents, intentional self-harm, initial encounterapproximate
- T50.6X3APoisoning by antidotes and chelating agents, assault, initial encounterapproximate
- T50.6X4APoisoning by antidotes and chelating agents, undetermined, initial encounterapproximate
Common questions about 977.2
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.