2026 ICD-10-CM Diagnosis Code S13.8XXDSprain of joints and ligaments of other parts of neck, subsequent encounter

ICD-10-CM Codes›S00–T88›S10-S19›S13

ICD-10-CM S13.8XXD
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

S13.8XXD is a billable ICD-10-CM diagnosis code for sprain of joints and ligaments of other parts of neck, 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 atlanto-occipital joint sprain. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Sprains and strains, subsequent encounter.

Code Identity

ICD-10-CM Code
S13.8XXD
Billable Status
Yes — Valid for Submission
Code Describes
Sprain of joints and ligaments of other parts of neck, subsequent encounter
Short Description
Sprain of joints and ligaments of oth prt neck, subs encntr
Parent Code
S13.8
Sprain of joints and ligaments of other parts of neck

Code Classification

ChapterS00–T88Injury, poisoning and certain other consequences of external causes
SectionS10-S19Injuries to the neck
CategoryS13Dislocation and sprain of joints and ligaments at neck level
This CodeS13.8XXDSprain of joints and ligaments of other parts of neck, subsequent encounter

Present on Admission (POA)Billing

S13.8XXD 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.

  • Atlanto-occipital joint sprain
  • Cervical spine sprain
  • Injury to ligament of cervical spine
  • Neck sprain
  • Sprain of spinal ligament

Coding GuidelinesGuidance

The appropriate 7th character is to be added to each code from block Dislocation and sprain of joints and ligaments at neck level (S13). 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 INJ061
Sprains and strains, subsequent encounter
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • Neck Sprain

    stretching or tearing of ligaments in the neck.

Patient EducationClinical

Neck Injuries and Disorders

Any part of your neck - muscles, bones, joints, tendons, ligaments, or nerves - can cause neck problems. Neck pain is very common. Pain may also come from your shoulder, jaw, head, or upper arms.

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert S13.8XXD to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
V58.89 Other specfied aftercare
Approximate The match is approximate rather than exact.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About S13.8XXDOverview

Is S13.8XXD (Sprain of joints and ligaments of other parts of neck) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report sprain of joints and ligaments of other parts of neck, subsequent encounter on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What does the 7th character D in S13.8XXD mean?

The final character D marks a subsequent encounter: use it for routine care while the sprain of joints and ligaments of other parts of neck is healing, after active treatment has ended.

What MS-DRG does S13.8XXD group to?

When sprain of joints and ligaments of other parts of neck, 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 S13.8XXD 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 sprain of joints and ligaments of other parts of neck, subsequent encounter on inpatient claims.

What is the ICD-9 equivalent of S13.8XXD?

Under the General Equivalence Mappings, sprain of joints and ligaments of other parts of neck, subsequent encounter converts to ICD-9-CM V58.89 (other specfied aftercare). 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.