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

ICD-10-CM Codes›S00–T88›S00-S09›S06

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

S06.2XAD is a billable ICD-10-CM diagnosis code for diffuse traumatic brain injury with loss of consciousness status unknown, subsequent encounter. The 7th character D marks it as a subsequent encounter code, used during routine care in the healing or recovery phase. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 949 through 950. The code is exempt from POA reporting. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Traumatic brain injury (TBI); concussion, subsequent encounter.

Code Identity

ICD-10-CM Code
S06.2XAD
Billable Status
Yes — Valid for Submission
Code Describes
Diffuse traumatic brain injury with loss of consciousness status unknown, subsequent encounter
Short Description
Diffuse TBI with LOC status unknown, subsequent encounter
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 CodeS06.2XADDiffuse traumatic brain injury with loss of consciousness status unknown, subsequent encounter

Present on Admission (POA)Billing

S06.2XAD 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
  • Multiple intracranial injuries
  • Multiple traumatic hemorrhages of brain tissue
  • Open skull fracture with 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 INJ045
Traumatic brain injury (TBI); concussion, subsequent encounter
Default principal diagnosis: inpatient Yes · outpatient Yes

Code History & ChangesHistory

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

  • S06.2X9D - Diffuse TBI w loss of consciousness of unsp duration, subs
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 S06.2XADOverview

Is S06.2XAD 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, subsequent encounter on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What does the 7th character D in S06.2XAD mean?

The final character D marks a subsequent encounter: use it for routine care while the diffuse traumatic brain injury with loss of consciousness status unknown is healing, after active treatment has ended.

What MS-DRG does S06.2XAD group to?

When diffuse traumatic brain injury with loss of consciousness status unknown, subsequent encounter is the principal diagnosis on an inpatient stay, it groups to MS-DRG 949, 950, with relative weights from 0.6277 to 1.1897 depending on complications. Higher weights mean higher Medicare reimbursement.

Is S06.2XAD 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, subsequent encounter 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.