2026 ICD-10-CM Diagnosis Code S94.92XAInjury of unspecified nerve at ankle and foot level, left leg, initial encounter

ICD-10-CM Codes›S00–T88›S90-S99›S94

ICD-10-CM S94.92XA
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

S94.92XA is a billable ICD-10-CM diagnosis code for injury of unspecified nerve at ankle and foot level, left 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. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Injury to nerves, muscles and tendons, initial encounter.

Code Identity

ICD-10-CM Code
S94.92XA
Billable Status
Yes — Valid for Submission
Code Describes
Injury of unspecified nerve at ankle and foot level, left leg, initial encounter
Short Description
Injury of unsp nerve at ankle and foot level, left leg, init
Parent Code
S94.92
Injury of unspecified nerve at ankle and foot level, left leg

Code Classification

ChapterS00–T88Injury, poisoning and certain other consequences of external causes
SectionS90-S99Injuries to the ankle and foot
CategoryS94Injury of nerves at ankle and foot level
This CodeS94.92XAInjury of unspecified nerve at ankle and foot level, left leg, initial encounter

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.

CCSR INJ025
Injury to nerves, muscles and tendons, initial encounter
Default principal diagnosis: inpatient Yes · outpatient Yes

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 S94.92XA to ICD-9-CMHistory

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

ICD-9-CM
956.9 Inj nerve pelv/leg NOS
Approximate The match is approximate rather than exact.
ICD-9-CM
957.9 Injury to nerve NOS
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 S94.92XAOverview

Is S94.92XA a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report injury of unspecified nerve at ankle and foot level, left leg, initial encounter on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What does the 7th character A in S94.92XA mean?

The final character A marks the initial encounter: use it while the patient is receiving active treatment for injury of unspecified nerve at ankle and foot level, left leg, such as an emergency visit or first evaluation.

What MS-DRG does S94.92XA group to?

When injury of unspecified nerve at ankle and foot level, left 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 S94.92XA?

Under the General Equivalence Mappings, injury of unspecified nerve at ankle and foot level, left leg, initial encounter converts to ICD-9-CM 956.9 (inj nerve pelv/leg NOS) and 957.9 (injury to nerve 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.