T44.9 — Poisoning by, adverse effect of and underdosing of other and unspecified drugs primarily affecting the autonomic nervous system
Not billable
Is T44.9 billable?
No — T44.9 is a non-billable header code. T44.9 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 36 billable codes beneath T44.9.
Billable codes under this header
- T44.901APoisoning by unspecified drugs primarily affecting the autonomic nervous system, accidental (unintentional), initial encounter
- T44.901DPoisoning by unspecified drugs primarily affecting the autonomic nervous system, accidental (unintentional), subsequent encounter
- T44.901SPoisoning by unspecified drugs primarily affecting the autonomic nervous system, accidental (unintentional), sequela
- T44.902APoisoning by unspecified drugs primarily affecting the autonomic nervous system, intentional self-harm, initial encounter
- T44.902DPoisoning by unspecified drugs primarily affecting the autonomic nervous system, intentional self-harm, subsequent encounter
- T44.902SPoisoning by unspecified drugs primarily affecting the autonomic nervous system, intentional self-harm, sequela
- T44.903APoisoning by unspecified drugs primarily affecting the autonomic nervous system, assault, initial encounter
- T44.903DPoisoning by unspecified drugs primarily affecting the autonomic nervous system, assault, subsequent encounter
- T44.903SPoisoning by unspecified drugs primarily affecting the autonomic nervous system, assault, sequela
- T44.904APoisoning by unspecified drugs primarily affecting the autonomic nervous system, undetermined, initial encounter
- T44.904DPoisoning by unspecified drugs primarily affecting the autonomic nervous system, undetermined, subsequent encounter
- T44.904SPoisoning by unspecified drugs primarily affecting the autonomic nervous system, undetermined, sequela
- T44.905AAdverse effect of unspecified drugs primarily affecting the autonomic nervous system, initial encounter
- T44.905DAdverse effect of unspecified drugs primarily affecting the autonomic nervous system, subsequent encounter
- T44.905SAdverse effect of unspecified drugs primarily affecting the autonomic nervous system, sequela
- T44.906AUnderdosing of unspecified drugs primarily affecting the autonomic nervous system, initial encounter
- T44.906DUnderdosing of unspecified drugs primarily affecting the autonomic nervous system, subsequent encounter
- T44.906SUnderdosing of unspecified drugs primarily affecting the autonomic nervous system, sequela
- T44.991APoisoning by other drug primarily affecting the autonomic nervous system, accidental (unintentional), initial encounter
- T44.991DPoisoning by other drug primarily affecting the autonomic nervous system, accidental (unintentional), subsequent encounter
- T44.991SPoisoning by other drug primarily affecting the autonomic nervous system, accidental (unintentional), sequela
- T44.992APoisoning by other drug primarily affecting the autonomic nervous system, intentional self-harm, initial encounter
- T44.992DPoisoning by other drug primarily affecting the autonomic nervous system, intentional self-harm, subsequent encounter
- T44.992SPoisoning by other drug primarily affecting the autonomic nervous system, intentional self-harm, sequela
- T44.993APoisoning by other drug primarily affecting the autonomic nervous system, assault, initial encounter
- T44.993DPoisoning by other drug primarily affecting the autonomic nervous system, assault, subsequent encounter
- T44.993SPoisoning by other drug primarily affecting the autonomic nervous system, assault, sequela
- T44.994APoisoning by other drug primarily affecting the autonomic nervous system, undetermined, initial encounter
- T44.994DPoisoning by other drug primarily affecting the autonomic nervous system, undetermined, subsequent encounter
- T44.994SPoisoning by other drug primarily affecting the autonomic nervous system, undetermined, sequela
- T44.995AAdverse effect of other drug primarily affecting the autonomic nervous system, initial encounter
- T44.995DAdverse effect of other drug primarily affecting the autonomic nervous system, subsequent encounter
- T44.995SAdverse effect of other drug primarily affecting the autonomic nervous system, sequela
- T44.996AUnderdosing of other drug primarily affecting the autonomic nervous system, initial encounter
- T44.996DUnderdosing of other drug primarily affecting the autonomic nervous system, subsequent encounter
- T44.996SUnderdosing of other drug primarily affecting the autonomic nervous system, sequela
T44.9 at a glance
| Code | T44.9 |
|---|---|
| Description | Poisoning by, adverse effect of and underdosing of other and unspecified drugs primarily affecting the autonomic nervous system |
| Billable | No — header code |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Inclusion terms
Alternative wording in documentation that is classified to T44.9.
- Poisoning by, adverse effect of and underdosing of drug stimulating both alpha and beta-adrenoreceptors
Excludes1 — never code together — inherited from T36-T50
The conditions below can never be reported together with T44.9 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 T44.9. T44.9 describes a manifestation and cannot be the principal or first-listed diagnosis.
Use additional code — inherited from Chapter 19
Report an additional code alongside T44.9 to fully describe the condition. T44.9 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 T44.9 to fully describe the condition. T44.9 is sequenced first.
Excludes2 — not included here — inherited from Chapter 19
The conditions below are not part of T44.9, but a patient may have both at the same time. When documentation supports it, T44.9 and the excluded code may both be reported.
Excludes2 — not included here — inherited from T36-T50
The conditions below are not part of T44.9, but a patient may have both at the same time. When documentation supports it, T44.9 and the excluded code may both be reported.
What codes fall under T44.9? (2)
How long has T44.9 existed?
T44.9 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
- T44.1Poisoning by, adverse effect of and underdosing of other parasympathomimetics [cholinergics]not 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