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v1.0.0
ICD-10 Guide
DiagnosesMuscle Wasting

Muscle Wasting

ICD-10 Coding for Muscle Wasting(M62.50, M62.56, M62.84)

PRIMARY SPECIALTYOrthopedics
COMPLEXITYHigh
LAST UPDATED09/15/2025
Sam Tuffun, PT, DPT
Physical Therapist | Medical Coding & Billing Contributor

Diagnosis Overview

What is Muscle Wasting?
Essential facts and insights about Muscle Wasting

Key Clinical Considerations:

  • Progressive loss of muscle mass and strength
  • MRI or CT scan showing muscle atrophy
  • Decreased muscle tone and strength on physical examination

Clinical Information

Clinical Criteria & Documentation Requirements

  • Patient history of muscle weakness or atrophy
  • Use of terms like 'cachexia' or 'sarcopenia'
  • Examples: 'Patient exhibits significant muscle wasting in the lower extremities.'

Coding Guidelines

Usage Guidelines & Examples

  • Follow guidelines for coding muscle wasting versus general weakness.
  • Common errors include misclassifying muscle wasting as general weakness.

Code Exclusions

Important Exclusions

  • Muscle wasting due to malnutrition or systemic diseases
  • Alternative codes for specific conditions like cachexia (R64)

Related ICD-10 Codes

Primary Codes
M62.50
Muscle wasting, unspecified
R53.1
Weakness
Differential Codes
M62.84
M62.50
M62.50
for non-age-related muscle wasting.

Related CPT Codes

CPT codes will be available in a future update.

Specialty Focus

Primary Specialty

Orthopedics

Specialty Applications

  • Elderly patients, patients with chronic diseases, athletes with overtraining syndrome
  • Orthopedic clinics, rehabilitation centers, geriatric care facilities

Coding Complexity

High Complexity

This diagnosis requires careful attention to:

  • Comprehensive clinical documentation
  • Accurate code selection based on clinical criteria
  • Proper exclusion considerations
  • Specialty-specific coding guidelines

Documentation

Documentation Templates

Billing Information

Billing Considerations

  • Ensure proper documentation for billing
  • Verify code specificity requirements
  • Check for any additional codes needed
  • Review payer-specific guidelines

Common Issues

  • Insufficient clinical documentation
  • Incorrect code selection
  • Missing supporting diagnoses
  • Timing and frequency documentation

Frequently Asked Questions

Documentation requirements?

Include detailed patient history and physical exam findings.

Billing considerations?

Ensure accurate coding to reflect severity and underlying causes.