S09.91XA — Unspecified injury of ear, initial encounter
S09.91XA is a billable, specific ICD-10-CM code for unspecified injury of ear, 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 S09
- A
- initial encounter
- D
- subsequent encounter
- S
- sequela
Inclusion terms
Alternative wordings a physician may use in the chart for this same code.
- Injury of ear NOS
Risk adjustment
S09.91XA 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
S09.91XA is named in 3 Medicare coverage policies — 3 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A52438Billing and Coding: Tetanus Immunization
- A56459Billing and Coding: Debridement Services
- A57554Billing and Coding: Immune Globulins
Related codes at this level
Codes that share S09.91. If S09.91XA is not quite right, the correct code is usually one of these.
Questions about S09.91XA
- Is S09.91XA a billable ICD-10-CM code?
- Yes. S09.91XA is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does S09.91XA sit in the tabular list?
- Injury, poisoning and certain other consequences of external causes (S00-T88), in the block Injuries to the head (S00-S09).