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v1.0.0
ICD-10 Guide
DiagnosesRight Lower Leg Pain

Right Lower Leg Pain

ICD-10 Coding for Right Lower Leg Pain(M79.661)

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

Diagnosis Overview

What is Right Lower Leg Pain?
Essential facts and insights about Right Lower Leg Pain

Key Clinical Considerations:

  • Localized pain in the right lower leg, possibly with swelling or tenderness
  • Imaging studies such as X-rays or MRIs showing fractures, soft tissue injuries, or other abnormalities
  • Physical examination revealing range of motion limitations, tenderness, or swelling in the right lower leg

Clinical Information

Clinical Criteria & Documentation Requirements

  • Patient history including onset, duration, and characteristics of pain
  • Specific terminology such as 'right lower leg pain' or 'pain in the right calf'
  • Examples include detailed descriptions of pain severity and functional limitations

Coding Guidelines

Usage Guidelines & Examples

  • Follow guidelines for specificity in coding to avoid denials.
  • Common errors include using general codes instead of specific ones.

Code Exclusions

Important Exclusions

  • Fractures of the right lower leg, deep vein thrombosis
  • Alternative codes for specific conditions like neuropathy or arthritis

Related ICD-10 Codes

Primary Codes
M79.661
Pain in right lower leg
Ancillary Codes
G57.31
Differential Codes
M79.606

Related CPT Codes

CPT codes will be available in a future update.

Specialty Focus

Primary Specialty

Orthopedics

Specialty Applications

  • Adults with musculoskeletal issues, athletes with sports injuries
  • Orthopedic clinics, urgent care centers

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, physical exam findings, and any imaging results.

Billing considerations?

Ensure accurate coding to reflect the specific diagnosis and any associated procedures.