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v1.0.0
ICD-10 Guide
ICD-10 CodesM25.361

M25.361

Billable

Other instability, right knee

BILLABLE STATUSYes
IMPLEMENTATION DATEOctober 1, 2015
LAST UPDATED09/17/2025

Code Description

ICD-10 M25.361 is a billable code used to indicate a diagnosis of other instability, right knee.

Key Diagnostic Point:

M25.361 refers to 'Other instability, right knee,' which encompasses various conditions leading to instability in the right knee joint. This instability can arise from internal derangements such as meniscal tears, ligament injuries (including anterior cruciate ligament (ACL) or posterior cruciate ligament (PCL) tears), or other structural abnormalities. Patients may present with symptoms such as joint pain, swelling, and a sensation of the knee giving way during activities. The diagnosis often requires imaging studies, such as MRI, to assess the integrity of the menisci and ligaments. Treatment options may include conservative management with physical therapy, bracing, or surgical interventions like arthroscopy to repair or remove damaged tissue. Accurate coding is essential for proper reimbursement and to reflect the complexity of the patient's condition.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variety of underlying causes leading to instability
  • Need for precise documentation of specific injuries (e.g., meniscal tears, ligamentous injuries)
  • Potential for concurrent conditions affecting the knee
  • Variability in treatment approaches and surgical procedures

Audit Risk Factors

  • Inadequate documentation of the specific type of instability
  • Failure to specify concurrent injuries or conditions
  • Lack of imaging results in the medical record
  • Improper linkage between diagnosis and procedure codes

Specialty Focus

Medical Specialties

Orthopedic Surgery

Documentation Requirements

Detailed operative reports, imaging studies, and pre- and post-operative assessments.

Common Clinical Scenarios

Meniscal tears, ACL reconstruction, and knee arthroscopy.

Billing Considerations

Ensure clear documentation of the type of instability and any surgical interventions performed.

Physical Medicine and Rehabilitation

Documentation Requirements

Comprehensive evaluations, treatment plans, and progress notes.

Common Clinical Scenarios

Rehabilitation following knee surgery or conservative management of knee instability.

Billing Considerations

Document functional limitations and response to therapy to support coding.

Coding Guidelines

Inclusion Criteria

Use M25.361 When
  • Follow the official ICD
  • CM coding guidelines, ensuring that the diagnosis is supported by clinical documentation
  • Include any relevant imaging findings and specify the type of instability when applicable

Exclusion Criteria

Do NOT use M25.361 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

29881CPT Code

Arthroscopy, knee, diagnostic, with or without synovial biopsy

Clinical Scenario

Used when performing a diagnostic arthroscopy to evaluate knee instability.

Documentation Requirements

Operative report detailing findings and any interventions performed.

Specialty Considerations

Orthopedic surgeons should ensure that the procedure is clearly linked to the diagnosis of instability.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of knee instability, improving the ability to capture the complexity of these conditions and their treatments.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of knee instability, improving the ability to capture the complexity of these conditions and their treatments.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of knee instability, improving the ability to capture the complexity of these conditions and their treatments.

Resources

Clinical References

  • •
    ICD-10-CM Official Guidelines for Coding and Reporting

Coding & Billing References

  • •
    ICD-10-CM Official Guidelines for Coding and Reporting

Frequently Asked Questions

What are the common causes of knee instability?

Common causes include ligament injuries (like ACL or PCL tears), meniscal tears, and previous knee surgeries that may compromise joint stability.