MCMedicalCodingSoftware
S09.0XXA

S09.0XXA: Injury of blood vessels of head, not elsewhere classified, initial encounter

Billable / specific codeICD-10-CM

S09.0XXA is a billable, specific ICD-10-CM code for injury of blood vessels of head, not elsewhere classified, initial encounter. It is valid for submission on a claim.

Check S09.0XXA with the rest of the claim: free scrubber

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

Excludes1: never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

  • injury of cerebral blood vessels (S06.-)
  • injury of precerebral blood vessels (S15.-)

Excludes1 inherited from the categories above S09.0XXA

A category’s note binds every code beneath it.

Written on S09.0: Injury of blood vessels of head, not elsewhere classified

  • injury of cerebral blood vessels (S06.-)
  • injury of precerebral blood vessels (S15.-)

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Medicare coverage

S09.0XXA is named in 9 Medicare coverage policies: 9 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.

  • 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

Unchanged in every release from FY2024 to FY2027.

Other codes under S09.0

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.