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v1.0.0
ICD-10 Guide
DiagnosesRight Knee Instability

Right Knee Instability

ICD-10 Coding for Right Knee Instability(M25.361, M23.51, S83.51xA)

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

Diagnosis Overview

What is Right Knee Instability?
Essential facts and insights about Right Knee Instability

Key Clinical Considerations:

  • Instability during weight-bearing activities
  • Pain and swelling around the knee joint
  • Difficulty with knee extension or flexion

Clinical Information

Clinical Criteria & Documentation Requirements

  • Patient history of knee injuries or surgeries
  • Detailed description of instability episodes
  • Physical examination findings including range of motion and stability tests

Coding Guidelines

Usage Guidelines & Examples

  • Follow usage guidelines for specific knee instability codes.
  • Common errors include using incorrect codes for related conditions.

Code Exclusions

Important Exclusions

  • Fractures of the knee
  • Osteoarthritis of the knee

Related ICD-10 Codes

Primary Codes
M23.2
Internal derangement of knee
M25.361
Pain in right knee
Ancillary Codes
G89.21
Z96.651
Differential Codes
M23.51
M25.361

Related CPT Codes

CPT codes will be available in a future update.

Specialty Focus

Primary Specialty

Orthopedics

Specialty Applications

  • Athletes with knee injuries
  • Patients with prior knee surgeries

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

What are the documentation requirements?

Include patient history, physical exam findings, and diagnostic test results.

What are the billing considerations?

Ensure accurate coding to reflect the severity and nature of the instability.