T50.903A — Poisoning by unspecified drugs, medicaments and biological substances, assault, initial encounter
T50.903A is a billable, specific ICD-10-CM code for poisoning by unspecified drugs, medicaments and biological substances, assault, initial encounter. It is valid for submission on a claim.
7th character "A" — initial encounter
The appropriate 7th character is to be added to each code from category T50
- A
- initial encounter
- D
- subsequent encounter
- S
- sequela
Risk adjustment
T50.903A 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.
Medicare coverage
T50.903A is named in 10 Medicare coverage policies — 10 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A54799Billing and Coding: Urine Drug Testing
- A55001Billing and Coding: Urine Drug Testing
- A56612Billing and Coding: CT of the Head
- A56645Billing and Coding: Controlled Substance Monitoring and Drugs of Abuse Testing
Related codes at this level
Codes that share T50.903. If T50.903A is not quite right, the correct code is usually one of these.
Questions about T50.903A
- Is T50.903A a billable ICD-10-CM code?
- Yes. T50.903A is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does T50.903A 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).