2026 ICD-10-CM Diagnosis Code S06.2XASDiffuse traumatic brain injury with loss of consciousness status unknown, sequela

ICD-10-CM Codes›S00–T88›S00-S09›S06

ICD-10-CM S06.2XAS
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

S06.2XAS is a billable ICD-10-CM diagnosis code for diffuse traumatic brain injury with loss of consciousness status unknown, 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). The code is exempt from POA reporting. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Injury, sequela.

Code Identity

ICD-10-CM Code
S06.2XAS
Billable Status
Yes — Valid for Submission
Code Describes
Diffuse traumatic brain injury with loss of consciousness status unknown, sequela
Short Description
Diffuse TBI with LOC status unknown, sequela
Parent Code
S06.2XA
Diffuse traumatic brain injury with loss of consciousness status unknown

Code Classification

ChapterS00–T88Injury, poisoning and certain other consequences of external causes
SectionS00-S09Injuries to the head
CategoryS06Intracranial injury
This CodeS06.2XASDiffuse traumatic brain injury with loss of consciousness status unknown, sequela

Present on Admission (POA)Billing

S06.2XAS 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 cortex laceration with concussion
  • Contusion of cerebral cortex
  • Contusion of cerebrum with open intracranial wound
  • Cortex contusion with open intracranial wound
  • Cortex laceration
  • Diffuse injury of brainstem
  • Diffuse injury of cerebellum
  • Diffuse injury of cerebrum
  • Intracranial hemorrhage co-occurrent and due to complex wound of head
  • Late effect of traumatic injury to brain
  • Multiple intracranial injuries
  • Multiple traumatic hemorrhages of brain tissue
  • Open skull fracture with intracranial hemorrhage
  • Sequela of traumatic intracranial hemorrhage
  • Traumatic hemorrhage of cerebral white matter

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.

CCSR INJ073
Injury, sequela
Default principal diagnosis: inpatient Yes · outpatient Yes

Code History & ChangesHistory

Replacement S06.2XAS replaces the following previously assigned code(s):

  • S06.2X9S - Diffuse TBI w LOC of unsp duration, sequela
FY 2023AddedAdded to the ICD-10-CM code setEffective October 1, 2022.
FY 2024–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About S06.2XASOverview

Is S06.2XAS a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report diffuse traumatic brain injury with loss of consciousness status unknown, sequela on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What does the 7th character S in S06.2XAS mean?

The final character S makes this a sequela code: it reports a lingering problem that remains after the diffuse traumatic brain injury with loss of consciousness status unknown itself has resolved, not the original event.

Is S06.2XAS 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 diffuse traumatic brain injury with loss of consciousness status unknown, sequela on inpatient claims.

Footnotes

[1] Chronic - a chronic condition code indicates a condition lasting 12 months or longer and its effect on the patient based on one or both of the following criteria:

  • The condition results in the need for ongoing intervention with medical products,treatment, services, and special equipment
  • The condition places limitations on self-care, independent living, and social interactions.