2026 ICD-10-CM Diagnosis Code S96.901SUnspecified injury of unspecified muscle and tendon at ankle and foot level, right foot, sequela
S96.901S is a billable ICD-10-CM diagnosis code for unspecified injury of unspecified muscle and tendon at ankle and foot level, right foot, 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 913 through 914. The code is exempt from POA reporting. Coders also document this condition as injury of muscle of right foot. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Injury, sequela.
Code Identity
Code Classification
Present on Admission (POA)Billing
S96.901S 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.
- Injury of muscle of right foot
Coding GuidelinesGuidance
The appropriate 7th character is to be added to each code from block Injury of muscle and tendon at ankle and foot level (S96). 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
Ankle Injuries and Disorders
Your ankle bone and the ends of your two lower leg bones make up the ankle joint. Your ligaments, which connect bones to one another, stabilize and support it. Your muscles and tendons move it.
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert S96.901S to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About S96.901SOverview
Is S96.901S a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report unspecified injury of unspecified muscle and tendon at ankle and foot level, right foot, sequela on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What does the 7th character S in S96.901S mean?
The final character S makes this a sequela code: it reports a lingering problem that remains after the unspecified injury of unspecified muscle and tendon at ankle and foot level, right foot itself has resolved, not the original event.
What MS-DRG does S96.901S group to?
When unspecified injury of unspecified muscle and tendon at ankle and foot level, right foot, sequela is the principal diagnosis on an inpatient stay, it groups to MS-DRG 913, 914, with relative weights from 0.8855 to 1.6346 depending on complications. Higher weights mean higher Medicare reimbursement.
Is S96.901S 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 unspecified injury of unspecified muscle and tendon at ankle and foot level, right foot, sequela on inpatient claims.
What is the ICD-9 equivalent of S96.901S?
Under the General Equivalence Mappings, unspecified injury of unspecified muscle and tendon at ankle and foot level, right foot, sequela converts to ICD-9-CM 908.9 (late effect injury NOS). 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.
