T44.90
T44.90 — Poisoning by, adverse effect of and underdosing of unspecified drugs primarily affecting the autonomic nervous system
Non-billable headerICD-10-CM
T44.90 is a non-billable header ICD-10-CM code for poisoning by, adverse effect of and underdosing of unspecified drugs primarily affecting the autonomic nervous system. It cannot be billed on its own: choose one of the more specific child codes below. This code also requires a 7th character before it is complete.
This code requires a 7th character
The appropriate 7th character is to be added to each code from category T44
- A
- initial encounter
- D
- subsequent encounter
- S
- sequela
Risk adjustment
T44.90 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.
Code to one of these instead T44.90
6 child codes. Green means billable.
- T44.901Poisoning by unspecified drugs primarily affecting the autonomic nervous system, accidental (unintentional)
- T44.902Poisoning by unspecified drugs primarily affecting the autonomic nervous system, intentional self-harm
- T44.903Poisoning by unspecified drugs primarily affecting the autonomic nervous system, assault
- T44.904Poisoning by unspecified drugs primarily affecting the autonomic nervous system, undetermined
- T44.905Adverse effect of unspecified drugs primarily affecting the autonomic nervous system
- T44.906Underdosing of unspecified drugs primarily affecting the autonomic nervous system
Related codes at this level
Codes that share T44.9. If T44.90 is not quite right, the correct code is usually one of these.
Questions about T44.90
- Is T44.90 a billable ICD-10-CM code?
- No. T44.90 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
- Where does T44.90 sit in the tabular list?
- Injury, poisoning and certain other consequences of external causes (S00-T88), in the block Poisoning by, adverse effects of and underdosing of drugs, medicaments and biological substances (T36-T50).