2026 ICD-10-CM Diagnosis Code M62.471Contracture of muscle, right ankle and foot

ICD-10-CM Codes›M00–M99›M60-M63›M62

ICD-10-CM M62.471
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

M62.471 is a billable ICD-10-CM diagnosis code for contracture of muscle, right ankle and foot. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 555 through 556. Coders also document this condition as bilateral contracture of muscle of feet. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Muscle disorders.

Code Identity

ICD-10-CM Code
M62.471
Billable Status
Yes — Valid for Submission
Code Describes
Contracture of muscle, right ankle and foot
Short Description
Contracture of muscle, right ankle and foot
Same as the full description in the CMS dataset.
Parent Code
M62.47
Contracture of muscle, ankle and foot

Code Classification

ChapterM00–M99Diseases of the musculoskeletal system and connective tissue
SectionM60-M63Disorders of muscles
CategoryM62Other disorders of muscle
This CodeM62.471Contracture of muscle, right ankle and foot

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Bilateral contracture of muscle of feet
  • Bilateral muscle contracture of ankle regions
  • Bilateral muscle contracture of lower legs
  • Contracture of muscle of left foot
  • Contracture of muscle of right foot
  • Muscle contracture of left ankle
  • Muscle contracture of right ankle

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR MUS026
Muscle disorders
Default principal diagnosis: inpatient Yes · outpatient Yes

Patient EducationClinical

Joint Disorders

Your joints are places where two or more bones come together. Your shoulders, elbows, hips, knees, and knuckles are all joints. Your spine has joints, too.

The full article covers:

  • What are joints?
  • What are joint disorders?
  • What diseases can affect the joints?
  • What types of joint disorders happen from sudden injuries?
  • What types of joint disorders happen from overuse?
  • How can I keep my joints healthy?

Read the full article at MedlinePlus

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

Convert M62.471 to ICD-9-CMHistory

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

ICD-9-CM
728.85 Spasm of muscle
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 M62.471Overview

Is M62.471 (Contracture of muscle, ankle and foot) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report contracture of muscle, right ankle and foot on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does M62.471 group to?

When contracture of muscle, right ankle and foot is the principal diagnosis on an inpatient stay, it groups to MS-DRG 555, 556, with relative weights from 0.8306 to 1.3218 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of M62.471?

Under the General Equivalence Mappings, contracture of muscle, right ankle and foot converts to ICD-9-CM 728.85 (spasm of muscle). The mapping is approximate, so confirm the match fits the documentation.

Footnotes

[1] Chronic - a chronic condition code indicates a condition lasting 12 months or longer and its effect on the patient based on one or both of the following criteria:

  • The condition results in the need for ongoing intervention with medical products,treatment, services, and special equipment
  • The condition places limitations on self-care, independent living, and social interactions.