T44.1Poisoning by, adverse effect of and underdosing of other parasympathomimetics [cholinergics]

T44.1 is the ICD-10-CM diagnosis code for poisoning by, adverse effect of and underdosing of other parasympathomimetics [cholinergics]. It belongs to category T44 (poisoning by, adverse effect of and underdosing of drugs primarily affecting the autonomic nervous system), block T36-T50 (poisoning by, adverse effects of and underdosing of drugs, medicaments and biological substances) and chapter 19 (injury, poisoning and certain other consequences of external causes). It is a header code, so it can't be reported by itself; one of its 1 subcodes must be used instead.

Within T44, choose T44.1 (other parasympathomimetics [cholinergics]) only when documentation doesn't support a more specific option: anticholinesterase agents (T44.0), ganglionic blocking drugs (T44.2), other parasympatholytics [anticholinergics and antimuscarinics] and spasmolytics (T44.3), predominantly alpha-adrenoreceptor agonists (T44.4), predominantly beta-adrenoreceptor agonists (T44.5), alpha-adrenoreceptor antagonists (T44.6), beta-adrenoreceptor antagonists (T44.7), centrally-acting and adrenergic-neuron- blocking agents (T44.8) and 1 more.

Codes in this range require a 7th character: A for initial encounter, D for subsequent encounter and S for sequela. Use placeholder "X" characters to fill any empty positions before the 7th character.

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.