S06.6X6S — Traumatic subarachnoid hemorrhage with loss of consciousness greater than 24 hours without return to pre-existing conscious level with patient surviving, sequela
S06.6X6S is a billable, specific ICD-10-CM code for traumatic subarachnoid hemorrhage with loss of consciousness greater than 24 hours without return to pre-existing conscious level with patient surviving, sequela. It is valid for submission on a claim.
7th character "S" — sequela
The appropriate 7th character is to be added to each code from category S06, except as noted below
- A
- initial encounter
- D
- subsequent encounter
- S
- sequela
Other codes that can never be billed with S06.6X6S
These codes carry an Excludes1 note pointing at S06.6X6S. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading S06.6X6S alone.
- G31.84Mild cognitive impairment of uncertain or unknown etiology
- I69Sequelae of cerebrovascular disease
- I69.8Sequelae of other cerebrovascular diseases
- I69.9Sequelae of unspecified cerebrovascular diseases
- S09.0Injury of blood vessels of head, not elsewhere classified
- S09.0XXAInjury of blood vessels of head, not elsewhere classified, initial encounter
- S09.0XXDInjury of blood vessels of head, not elsewhere classified, subsequent encounter
- S09.0XXSInjury of blood vessels of head, not elsewhere classified, sequela
Risk adjustment
S06.6X6S 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
S06.6X6S is named in 13 Medicare coverage policies — 13 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A54111Billing and Coding: Speech Language Pathology (SLP) Services: Communication Disorders
- A56537Billing and Coding: Scanning Computerized Ophthalmic Diagnostic Imaging (SCODI)
- A56612Billing and Coding: CT of the Head
- A56631Billing and Coding: Thoracic Aortography and Carotid, Vertebral, and Subclavian Angiography
Code history
S06.6X6S 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 S06.6X6. If S06.6X6S is not quite right, the correct code is usually one of these.
- S06.6X6ATraumatic subarachnoid hemorrhage with loss of consciousness greater than 24 hours without return to pre-existing conscious level with patient surviving, initial encounter
- S06.6X6DTraumatic subarachnoid hemorrhage with loss of consciousness greater than 24 hours without return to pre-existing conscious level with patient surviving, subsequent encounter
Questions about S06.6X6S
- Is S06.6X6S a billable ICD-10-CM code?
- Yes. S06.6X6S is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does S06.6X6S 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 S06.6X6S?
- S06.6X6S 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 S06.6X6S (S06) and apply to it just the same.