T44.90 — Poisoning by, adverse effect of and underdosing of unspecified drugs primarily affecting the autonomic nervous system
Is T44.90 billable?
No — T44.90 is a non-billable header code. T44.90 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 T44.90.
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
T44.90 at a glance
| Code | T44.90 |
|---|---|
| Description | Poisoning by, adverse effect of and underdosing of 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 |
Excludes1 — never code together — inherited from T36-T50
The conditions below can never be reported together with T44.90 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 T44.90. T44.90 describes a manifestation and cannot be the principal or first-listed diagnosis.
Use additional code — inherited from Chapter 19
Report an additional code alongside T44.90 to fully describe the condition. T44.90 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 T44.90 to fully describe the condition. T44.90 is sequenced first.
Excludes2 — not included here — inherited from Chapter 19
The conditions below are not part of T44.90, but a patient may have both at the same time. When documentation supports it, T44.90 and the excluded code may both be reported.
Excludes2 — not included here — inherited from T36-T50
The conditions below are not part of T44.90, but a patient may have both at the same time. When documentation supports it, T44.90 and the excluded code may both be reported.
What codes fall under T44.90? (6)
- T44.901Poisoning by unspecified drugs primarily affecting the autonomic nervous system, accidental (unintentional)not billable
- T44.902Poisoning by unspecified drugs primarily affecting the autonomic nervous system, intentional self-harmnot billable
- T44.903Poisoning by unspecified drugs primarily affecting the autonomic nervous system, assaultnot billable
- T44.904Poisoning by unspecified drugs primarily affecting the autonomic nervous system, undeterminednot billable
- T44.905Adverse effect of unspecified drugs primarily affecting the autonomic nervous systemnot billable
- T44.906Underdosing of unspecified drugs primarily affecting the autonomic nervous systemnot billable
How long has T44.90 existed?
T44.90 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.