2026 ICD-10-CM Diagnosis Code S94.30XAInjury of cutaneous sensory nerve at ankle and foot level, unspecified leg, initial encounter
S94.30XA is a billable ICD-10-CM diagnosis code for injury of cutaneous sensory nerve at ankle and foot level, unspecified leg, initial encounter. The 7th character A marks it as an initial encounter code, used while the patient is receiving active treatment. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 963 through 965. Coders also document this condition as injury of cutaneous sensory nerve at ankle and foot level. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Injury to nerves, muscles and tendons, initial encounter.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Injury of cutaneous sensory nerve at ankle and foot level
- Injury of cutaneous sensory nerve of lower limb
- Injury of cutaneous sensory nerve of toe
- Injury of nerves at ankle and foot level
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.
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Convert S94.30XA to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About S94.30XAOverview
Is S94.30XA 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, unspecified leg, initial encounter on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What does the 7th character A in S94.30XA mean?
The final character A marks the initial encounter: use it while the patient is receiving active treatment for injury of cutaneous sensory nerve at ankle and foot level, unspecified leg, such as an emergency visit or first evaluation.
What MS-DRG does S94.30XA group to?
When injury of cutaneous sensory nerve at ankle and foot level, unspecified leg, initial encounter is the principal diagnosis on an inpatient stay, it groups to MS-DRG 963, 964, 965, with relative weights from 0.9405 to 2.7338 depending on complications. Higher weights mean higher Medicare reimbursement.
What is the ICD-9 equivalent of S94.30XA?
Under the General Equivalence Mappings, injury of cutaneous sensory nerve at ankle and foot level, unspecified leg, initial encounter converts to ICD-9-CM 956.4 (inj cutan senso nerv/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.
