2026 ICD-10-CM Diagnosis Code S08.0XXSAvulsion of scalp, sequela
S08.0XXS is a billable ICD-10-CM diagnosis code for avulsion of scalp, 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 604 through 605. The code is exempt from POA reporting. Coders also document this condition as avulsion of scalp. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Injury, sequela.
Code Identity
Code Classification
Present on Admission (POA)Billing
S08.0XXS 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.
- Avulsion of scalp
- Complex wound of head with avulsive loss of part of skull and cranial contents
Coding GuidelinesGuidance
The appropriate 7th character is to be added to each code from block Avulsion and traumatic amputation of part of head (S08). 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.
Patient EducationClinical
Head Injuries
Chances are you've bumped your head before. Often, the injury is minor because your skull is hard and it protects your brain. But other head injuries can be more severe, such as a skull fracture, concussion, or traumatic brain injury.
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert S08.0XXS to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About S08.0XXSOverview
Is S08.0XXS (Avulsion of scalp) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report avulsion of scalp, sequela on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What does the 7th character S in S08.0XXS mean?
The final character S makes this a sequela code: it reports a lingering problem that remains after the avulsion of scalp itself has resolved, not the original event.
What MS-DRG does S08.0XXS group to?
When avulsion of scalp, sequela is the principal diagnosis on an inpatient stay, it groups to MS-DRG 604, 605, with relative weights from 0.9160 to 1.4721 depending on complications. Higher weights mean higher Medicare reimbursement.
Is S08.0XXS 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 avulsion of scalp, sequela on inpatient claims.
What is the ICD-9 equivalent of S08.0XXS?
Under the General Equivalence Mappings, avulsion of scalp, sequela converts to ICD-9-CM 906.0 (lt eff opn wnd head/trnk). The mapping is approximate, so confirm the match fits the documentation.
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.
