2026 ICD-10-CM Diagnosis Code S06.A0XSTraumatic brain compression without herniation, sequela
S06.A0XS is a billable ICD-10-CM diagnosis code for traumatic brain compression without herniation, sequela. The 7th character S marks it as a sequela code, which reports a problem that remains after the original condition has resolved. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 913 through 914. The code is not accepted as a principal diagnosis by the Medicare Code Editor and exempt from POA reporting. Coders also document this condition as cerebral compression due to injury. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Injury, sequela.
Code Identity
Code Classification
Code EditsBilling
Medicare Code Editor checks that affect claim validity for S06.A0XS.
Present on Admission (POA)Billing
S06.A0XS is exempt from POA reporting on inpatient claims to general acute care hospitals. Review other POA exempt codes.
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Cerebral compression due to injury
- Focal brain compression due to trauma
Coding GuidelinesGuidance
The appropriate 7th character is to be added to each code from block Intracranial injury (S06). Use the following options for the applicable episode of care:
- A - initial encounter
- D - subsequent encounter
- S - sequela
Source: ICD-10-CM Official Guidelines for Coding and Reporting, FY 2026, published by CMS and the National Center for Health Statistics.
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Code History & ChangesHistory
Replacement S06.A0XS replaces the following previously assigned code(s):
- S06.890D - Intcran inj w/o loss of consciousness, subs encntr
- S06.899S - Intcran inj w LOC of unsp duration, sequela
Questions About S06.A0XSOverview
Is S06.A0XS (Traumatic brain compression without herniation) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report traumatic brain compression without herniation, sequela on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What does the 7th character S in S06.A0XS mean?
The final character S makes this a sequela code: it reports a lingering problem that remains after the traumatic brain compression without herniation itself has resolved, not the original event.
What MS-DRG does S06.A0XS group to?
On inpatient claims, traumatic brain compression without herniation, sequela maps to MS-DRG 913, 914, with relative weights from 0.8855 to 1.6346 depending on complications. Higher weights mean higher Medicare reimbursement.
Can S06.A0XS be a principal diagnosis?
No. The Medicare Code Editor rejects this code as a principal diagnosis because traumatic brain compression without herniation, sequela describes a circumstance that influences health status rather than a current illness. Report it as a secondary diagnosis.
Is S06.A0XS exempt from POA reporting?
Yes. CMS lists this code among those exempt from present on admission reporting, so hospitals do not assign a POA indicator for traumatic brain compression without herniation, sequela on inpatient claims.
Footnotes
[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.
