T50.991
T50.991: Poisoning by other drugs, medicaments and biological substances, accidental (unintentional)
Non-billable headerICD-10-CM
T50.991 is a non-billable header ICD-10-CM code for poisoning by other drugs, medicaments and biological substances, accidental (unintentional). 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 T50
- A
- initial encounter
- D
- subsequent encounter
- S
- sequela
Risk adjustment
No CMS-HCC V28 category: this code does not change a RAF score.
Code history
Unchanged in every release from FY2024 to FY2027.
Code to one of these instead T50.991
3 child codes. Green means billable.
- T50.991APoisoning by other drugs, medicaments and biological substances, accidental (unintentional), initial encounter
- T50.991DPoisoning by other drugs, medicaments and biological substances, accidental (unintentional), subsequent encounter
- T50.991SPoisoning by other drugs, medicaments and biological substances, accidental (unintentional), sequela
Other codes under T50.99
- T50.992Poisoning by other drugs, medicaments and biological substances, intentional self-harm
- T50.993Poisoning by other drugs, medicaments and biological substances, assault
- T50.994Poisoning by other drugs, medicaments and biological substances, undetermined
- T50.995Adverse effect of other drugs, medicaments and biological substances
- T50.996Underdosing of other drugs, medicaments and biological substances