S00.81XA — Abrasion of other part of head, initial encounter
S00.81XA is a billable, specific ICD-10-CM code for abrasion of other part of head, 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 S00
- A
- initial encounter
- D
- subsequent encounter
- S
- sequela
Excludes1 inherited from the categories above S00.81XA
These are not written on S00.81XA, but they bind it: a note on a category applies to every code beneath it. Billing S00.81XA with anything listed here is a denial.
Risk adjustment
S00.81XA 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
S00.81XA is named in 6 Medicare coverage policies — 6 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
- A54767Billing and Coding: Medicare Preventive Coverage for Certain Vaccines
- A56459Billing and Coding: Debridement Services
- A56900Billing and Coding: Immunizations
Code history
S00.81XA has not changed since FY2024 — no addition, revision or deletion across the three most recent ICD-10-CM releases.
Related codes at this level
Codes that share S00.81. If S00.81XA is not quite right, the correct code is usually one of these.
Questions about S00.81XA
- Is S00.81XA a billable ICD-10-CM code?
- Yes. S00.81XA is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does S00.81XA 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).
- What cannot be coded together with S00.81XA?
- S00.81XA carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter. Some are written on the categories above S00.81XA (S00) and apply to it just the same.