T37.91 — Poisoning by unspecified systemic anti-infective and antiparasitics, accidental (unintentional)
T37.91 is a non-billable header ICD-10-CM code for poisoning by unspecified systemic anti-infective and antiparasitics, 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 T37
- A
- initial encounter
- D
- subsequent encounter
- S
- sequela
Inclusion terms
Alternative wordings a physician may use in the chart for this same code.
- Poisoning by, adverse effect of and underdosing of systemic anti-infective and antiparasitics NOS
Risk adjustment
T37.91 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 T37.91
3 child codes. Green means billable.
- T37.91XAPoisoning by unspecified systemic anti-infective and antiparasitics, accidental (unintentional), initial encounter
- T37.91XDPoisoning by unspecified systemic anti-infective and antiparasitics, accidental (unintentional), subsequent encounter
- T37.91XSPoisoning by unspecified systemic anti-infective and antiparasitics, accidental (unintentional), sequela
Related codes at this level
Codes that share T37.9. If T37.91 is not quite right, the correct code is usually one of these.
- T37.92Poisoning by unspecified systemic anti-infective and antiparasitics, intentional self-harm
- T37.93Poisoning by unspecified systemic anti-infective and antiparasitics, assault
- T37.94Poisoning by unspecified systemic anti-infective and antiparasitics, undetermined
- T37.95Adverse effect of unspecified systemic anti-infective and antiparasitic
- T37.96Underdosing of unspecified systemic anti-infectives and antiparasitics
Questions about T37.91
- Is T37.91 a billable ICD-10-CM code?
- No. T37.91 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
- Where does T37.91 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).