S09.0XXD — Injury of blood vessels of head, not elsewhere classified, subsequent encounter
S09.0XXD is a billable, specific ICD-10-CM code for injury of blood vessels of head, not elsewhere classified, subsequent encounter. It is valid for submission on a claim.
7th character "D" — subsequent encounter
The appropriate 7th character is to be added to each code from category S09
- A
- initial encounter
- D
- subsequent encounter
- S
- sequela
Excludes1 — never code together
These conditions cannot occur together. Billing both on the same encounter is a denial.
Excludes1 inherited from the categories above S09.0XXD
These are not written on S09.0XXD, but they bind it: a note on a category applies to every code beneath it. Billing S09.0XXD with anything listed here is a denial.
Risk adjustment
S09.0XXD 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
S09.0XXD is named in 8 Medicare coverage policies — 8 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A52992Billing and Coding: Non-Invasive Cerebrovascular Arterial Studies
- A56631Billing and Coding: Thoracic Aortography and Carotid, Vertebral, and Subclavian Angiography
- A56747Billing and Coding: Magnetic Resonance Angiography (MRA)
- A56775Billing and Coding: Magnetic Resonance Angiography
Code history
S09.0XXD 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 S09.0. If S09.0XXD is not quite right, the correct code is usually one of these.
Questions about S09.0XXD
- Is S09.0XXD a billable ICD-10-CM code?
- Yes. S09.0XXD is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does S09.0XXD 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 S09.0XXD?
- S09.0XXD 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 S09.0XXD (S09.0) and apply to it just the same.