2026 ICD-10-CM Diagnosis Code S06.5XADTraumatic subdural hemorrhage with loss of consciousness status unknown, subsequent encounter

ICD-10-CM Codes›S00–T88›S00-S09›S06

ICD-10-CM S06.5XAD
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

S06.5XAD is a billable ICD-10-CM diagnosis code for traumatic subdural hemorrhage 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. Coders also document this condition as traumatic hemorrhage of subdural space of infratentorial region. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Traumatic brain injury (TBI); concussion, subsequent encounter.

Code Identity

ICD-10-CM Code
S06.5XAD
Billable Status
Yes — Valid for Submission
Code Describes
Traumatic subdural hemorrhage with loss of consciousness status unknown, subsequent encounter
Short Description
Traum subdr hem with LOC status unknown, subs
Parent Code
S06.5XA
Traumatic subdural hemorrhage 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 CodeS06.5XADTraumatic subdural hemorrhage with loss of consciousness status unknown, subsequent encounter

Present on Admission (POA)Billing

S06.5XAD 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.

  • Traumatic hemorrhage of subdural space of infratentorial region

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 S06.5XAD replaces the following previously assigned code(s):

  • S06.5X9D - Traum subdr hem w LOC 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 S06.5XADOverview

Is S06.5XAD a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report traumatic subdural hemorrhage 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 S06.5XAD mean?

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

What MS-DRG does S06.5XAD group to?

When traumatic subdural hemorrhage 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 S06.5XAD 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 subdural hemorrhage with loss of consciousness status unknown, subsequent encounter 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.