T44.1X6Underdosing of other parasympathomimetics [cholinergics]

T44.1X6 is the ICD-10-CM diagnosis code for 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 3 subcodes must be used instead.

Within T44.1X, choose T44.1X6 (Underdosing of other parasympathomimetics [cholinergics]) only when documentation doesn't support a more specific option: poisoning by other parasympathomimetics [cholinergics], accidental (unintentional) (T44.1X1), poisoning by other parasympathomimetics [cholinergics], intentional self-harm (T44.1X2), poisoning by other parasympathomimetics [cholinergics], assault (T44.1X3), poisoning by other parasympathomimetics [cholinergics], undetermined (T44.1X4) and adverse effect of other parasympathomimetics [cholinergics] (T44.1X5).

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 changed in FY2020 (title revised).