Question 1

What is ICD-10 code S06?

Accepted Answer

S06 is the ICD-10-CM diagnosis code for Intracranial injury. It belongs to the ICD-10-CM chapter for injury, poisoning and certain other consequences of external causes (s00-t88). S06 is a non-billable header code that organizes more specific child codes; the actual diagnosis on a claim must use one of those children. S06 is part of the FY2026 ICD-10-CM code set published by the CMS National Center for Health Statistics and used on Medicare, Medicaid, and commercial claims in the United States.

Question 2

Is S06 an HCC code?

Accepted Answer

S06 is a non-billable header code, so it cannot itself be a payment HCC. Header codes organize more specific child codes that share the same root concept; one of those children may map to a payment HCC under the CMS-HCC V28 or V24 risk adjustment model. Coders should select a child code from the S06 hierarchy that matches the documented presentation, then check that specific child for HCC status.

Question 3

Is S06 billable?

Accepted Answer

No. S06 is a header (non-billable) ICD-10-CM code. Header codes sit at a higher level of the diagnosis hierarchy and exist to organize a family of more specific child codes. Per ICD-10-CM coding guidelines, a header code cannot be reported on a claim as the diagnosis, coders must select a billable child code from the S06 hierarchy that matches the highest level of specificity supported by the provider's documentation. Payers reject header codes submitted as the primary diagnosis.

HCC Buddy Code Card

S06

Get the V28 RAF + MEAT cheat sheet

What This Code Means

Includes

Excludes 1, Do NOT code together

Use Additional Code

Code Also

Child Codes

Code Hierarchy

Work S06 in HCC Buddy

S06 ICD-10-CM Code: Intracranial injury