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ICD-10 Guide
ICD-10 CodesM21.062

M21.062

Billable

Valgus deformity, not elsewhere classified, left knee

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

Code Description

ICD-10 M21.062 is a billable code used to indicate a diagnosis of valgus deformity, not elsewhere classified, left knee.

Key Diagnostic Point:

Valgus deformity of the left knee is characterized by an abnormal angulation of the knee joint, where the distal segment of the limb is angled outward relative to the proximal segment. This condition can be acquired due to various factors, including trauma, degenerative joint disease, or post-surgical changes. Patients may present with symptoms such as knee pain, instability, and difficulty with ambulation. The deformity can lead to increased stress on the medial compartment of the knee, potentially resulting in osteoarthritis over time. Valgus deformities can also be associated with other conditions such as hallux valgus in the foot, where the big toe deviates laterally. Treatment options may include physical therapy, bracing, or surgical interventions such as osteotomy to correct the alignment. Accurate coding is essential for proper management and reimbursement, as it reflects the complexity of the patient's condition and the necessary interventions.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Differentiating between acquired and congenital deformities
  • Identifying associated conditions such as hallux valgus
  • Understanding the implications of surgical interventions
  • Documenting the severity and impact on function

Audit Risk Factors

  • Inadequate documentation of the deformity's cause
  • Failure to document associated conditions
  • Incorrect laterality coding
  • Lack of clarity on treatment plans

Specialty Focus

Medical Specialties

Orthopedics

Documentation Requirements

Detailed clinical notes including physical examination findings, imaging results, and treatment plans.

Common Clinical Scenarios

Patients presenting with knee pain and deformity, post-operative follow-ups for knee surgeries.

Billing Considerations

Ensure that all relevant imaging studies and assessments are documented to support the diagnosis.

Physical Therapy

Documentation Requirements

Progress notes detailing functional assessments, treatment interventions, and patient responses.

Common Clinical Scenarios

Rehabilitation following corrective surgery or conservative management of knee valgus.

Billing Considerations

Document specific functional limitations and goals to justify therapy sessions.

Coding Guidelines

Inclusion Criteria

Use M21.062 When
  • According to ICD
  • 10 guidelines, M21
  • 062 should be used when the valgus deformity is not classified elsewhere
  • Coders must ensure that the documentation supports the diagnosis and that the condition is not due to a more specific underlying pathology

Exclusion Criteria

Do NOT use M21.062 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

27447CPT Code

Osteotomy, knee

Clinical Scenario

Used for surgical correction of knee valgus deformity.

Documentation Requirements

Pre-operative assessment, surgical notes, and post-operative follow-up documentation.

Specialty Considerations

Orthopedic surgeons must ensure all surgical indications and outcomes are well-documented.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of conditions like valgus deformities, improving the accuracy of patient records and reimbursement processes. M21.062 provides a clear classification for acquired valgus deformities, enhancing clinical understanding and management.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of conditions like valgus deformities, improving the accuracy of patient records and reimbursement processes. M21.062 provides a clear classification for acquired valgus deformities, enhancing clinical understanding and management.

Reimbursement & Billing Impact

reimbursement processes. M21.062 provides a clear classification for acquired valgus deformities, enhancing clinical understanding and management.

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 is the difference between valgus and varus deformities?

Valgus deformities involve an outward angulation of the distal limb segment, while varus deformities involve an inward angulation. For example, in a valgus knee deformity, the knee angles outward, whereas in a varus knee deformity, the knee angles inward.