ICD-9-CM diagnosis code (retired)
971.1 — Poisoning by parasympatholytics (anticholinergics and antimuscarinics) and spasmolytics
About ICD-9-CM 971.1
971.1 is an ICD-9-CM diagnosis code for poisoning by parasympatholytics (anticholinergics and antimuscarinics) and spasmolytics. 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 T44.3X1A (Poisoning by other parasympatholytics [anticholinergics and antimuscarinics] and spasmolytics, accidental (unintentional), initial encounter), T44.3X2A (Poisoning by other parasympatholytics [anticholinergics and antimuscarinics] and spasmolytics, intentional self-harm, initial encounter) and T44.3X3A (Poisoning by other parasympatholytics [anticholinergics and antimuscarinics] and spasmolytics, assault, initial encounter). All of these are approximate matches, so review the record to pick the right one.
ICD-10-CM equivalents
- T44.3X1APoisoning by other parasympatholytics [anticholinergics and antimuscarinics] and spasmolytics, accidental (unintentional), initial encounterapproximate
- T44.3X2APoisoning by other parasympatholytics [anticholinergics and antimuscarinics] and spasmolytics, intentional self-harm, initial encounterapproximate
- T44.3X3APoisoning by other parasympatholytics [anticholinergics and antimuscarinics] and spasmolytics, assault, initial encounterapproximate
- T44.3X4APoisoning by other parasympatholytics [anticholinergics and antimuscarinics] and spasmolytics, undetermined, initial encounterapproximate
Common questions about 971.1
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.