2026 ICD-10-CM Diagnosis Code S94.31XSInjury of cutaneous sensory nerve at ankle and foot level, right leg, sequela
S94.31XS is a billable ICD-10-CM diagnosis code for injury of cutaneous sensory nerve at ankle and foot level, right leg, 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). The code is exempt from POA reporting. Coders also document this condition as injury of cutaneous sensory nerve of lower limb. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Injury, sequela.
Code Identity
Code Classification
Present on Admission (POA)Billing
S94.31XS 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 cutaneous sensory nerve of lower limb
- Injury of cutaneous sensory nerve of toe
- Injury of cutaneous sensory nerve of toe of right foot
Coding GuidelinesGuidance
The appropriate 7th character is to be added to each code from block Injury of nerves at ankle and foot level (S94). 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 S94.31XS to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About S94.31XSOverview
Is S94.31XS a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report injury of cutaneous sensory nerve at ankle and foot level, right leg, sequela on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What does the 7th character S in S94.31XS mean?
The final character S makes this a sequela code: it reports a lingering problem that remains after the injury of cutaneous sensory nerve at ankle and foot level, right leg itself has resolved, not the original event.
Is S94.31XS 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 injury of cutaneous sensory nerve at ankle and foot level, right leg, sequela on inpatient claims.
What is the ICD-9 equivalent of S94.31XS?
Under the General Equivalence Mappings, injury of cutaneous sensory nerve at ankle and foot level, right leg, sequela converts to ICD-9-CM 907.5 (lt eff nerv inj pelv/leg). 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.
