T44.1 — Poisoning by, adverse effect of and underdosing of other parasympathomimetics [cholinergics]
Is T44.1 billable?
No — T44.1 is a non-billable header code. T44.1 groups more specific codes and cannot be submitted on a claim. A valid ICD-10-CM code must be reported at the highest level of specificity available in its branch. Select one of the 18 billable codes beneath T44.1.
Billable codes under this header
- T44.1X1APoisoning by other parasympathomimetics [cholinergics], accidental (unintentional), initial encounter
- T44.1X1DPoisoning by other parasympathomimetics [cholinergics], accidental (unintentional), subsequent encounter
- T44.1X1SPoisoning by other parasympathomimetics [cholinergics], accidental (unintentional), sequela
- T44.1X2APoisoning by other parasympathomimetics [cholinergics], intentional self-harm, initial encounter
- T44.1X2DPoisoning by other parasympathomimetics [cholinergics], intentional self-harm, subsequent encounter
- T44.1X2SPoisoning by other parasympathomimetics [cholinergics], intentional self-harm, sequela
- T44.1X3APoisoning by other parasympathomimetics [cholinergics], assault, initial encounter
- T44.1X3DPoisoning by other parasympathomimetics [cholinergics], assault, subsequent encounter
- T44.1X3SPoisoning by other parasympathomimetics [cholinergics], assault, sequela
- T44.1X4APoisoning by other parasympathomimetics [cholinergics], undetermined, initial encounter
- T44.1X4DPoisoning by other parasympathomimetics [cholinergics], undetermined, subsequent encounter
- T44.1X4SPoisoning by other parasympathomimetics [cholinergics], undetermined, sequela
- T44.1X5AAdverse effect of other parasympathomimetics [cholinergics], initial encounter
- T44.1X5DAdverse effect of other parasympathomimetics [cholinergics], subsequent encounter
- T44.1X5SAdverse effect of other parasympathomimetics [cholinergics], sequela
- T44.1X6AUnderdosing of other parasympathomimetics [cholinergics], initial encounter
- T44.1X6DUnderdosing of other parasympathomimetics [cholinergics], subsequent encounter
- T44.1X6SUnderdosing of other parasympathomimetics [cholinergics], sequela
T44.1 at a glance
| Code | T44.1 |
|---|---|
| Description | Poisoning by, adverse effect of and underdosing of other parasympathomimetics [cholinergics] |
| Billable | No — header code |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Excludes1 — never code together — inherited from T36-T50
The conditions below can never be reported together with T44.1 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- toxic reaction to local anesthesia in pregnancy (O29.3-)
Code first — inherited from T36-T50
The underlying condition below must be sequenced before T44.1. T44.1 describes a manifestation and cannot be the principal or first-listed diagnosis.
Use additional code — inherited from Chapter 19
Report an additional code alongside T44.1 to fully describe the condition. T44.1 is sequenced first.
- code to identify any retained foreign body, if applicable (Z18.-)
Use additional code — inherited from T36-T50
Report an additional code alongside T44.1 to fully describe the condition. T44.1 is sequenced first.
Excludes2 — not included here — inherited from Chapter 19
The conditions below are not part of T44.1, but a patient may have both at the same time. When documentation supports it, T44.1 and the excluded code may both be reported.
Excludes2 — not included here — inherited from T36-T50
The conditions below are not part of T44.1, but a patient may have both at the same time. When documentation supports it, T44.1 and the excluded code may both be reported.
What codes fall under T44.1? (1)
How long has T44.1 existed?
T44.1 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.
What other codes are in the T44 family? (9)
- T44.0Poisoning by, adverse effect of and underdosing of anticholinesterase agentsnot billable
- T44.2Poisoning by, adverse effect of and underdosing of ganglionic blocking drugsnot billable
- T44.3Poisoning by, adverse effect of and underdosing of other parasympatholytics [anticholinergics and antimuscarinics] and spasmolyticsnot billable
- T44.4Poisoning by, adverse effect of and underdosing of predominantly alpha-adrenoreceptor agonistsnot billable
- T44.5Poisoning by, adverse effect of and underdosing of predominantly beta-adrenoreceptor agonistsnot billable
- T44.6Poisoning by, adverse effect of and underdosing of alpha-adrenoreceptor antagonistsnot billable
- T44.7Poisoning by, adverse effect of and underdosing of beta-adrenoreceptor antagonistsnot billable
- T44.8Poisoning by, adverse effect of and underdosing of centrally-acting and adrenergic-neuron- blocking agentsnot billable
- T44.9Poisoning by, adverse effect of and underdosing of other and unspecified drugs primarily affecting the autonomic nervous systemnot billable