ICD-10 Logo
ICDxICD-10 Medical Coding
ICD-10 Logo
ICDxICD-10 Medical Coding
ICD 10 CodesDiagnoses
ICD 10 CodesDiagnoses
ICD-10 Logo
ICDxICD-10 Medical Coding

Comprehensive ICD-10-CM code reference with AI-powered search capabilities.

© 2025 ICD Code Compass. All rights reserved.

Browse

  • All Chapters
  • All Categories
  • Diagnoses

Tools

  • AI Code Search
ICD-10-CM codes are maintained by the CDC and CMS. This tool is for reference purposes only.
v1.0.0
ICD-10 Guide
ICD-10 CodesM21.059

M21.059

Billable

Valgus deformity, not elsewhere classified, unspecified hip

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

Code Description

ICD-10 M21.059 is a billable code used to indicate a diagnosis of valgus deformity, not elsewhere classified, unspecified hip.

Key Diagnostic Point:

Valgus deformity refers to an abnormal angulation of a joint, where the distal segment is angled away from the midline of the body. In the case of the unspecified hip, this condition may arise from various acquired deformities, such as trauma, degenerative diseases, or post-surgical changes. Valgus deformities can lead to altered biomechanics, resulting in pain, instability, and functional limitations. Commonly associated with conditions like hallux valgus in the toes, this deformity can also affect the hip joint, leading to complications in gait and mobility. Treatment options may include physical therapy, orthotic devices, or surgical interventions aimed at realigning the joint and restoring function. Accurate coding is essential for proper reimbursement and tracking of treatment outcomes, particularly in cases where the deformity is secondary to other underlying conditions.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variability in clinical presentation and severity of the deformity
  • Need for comprehensive documentation to support the diagnosis
  • Potential overlap with other valgus deformities and related codes
  • Differentiation between acquired and congenital deformities

Audit Risk Factors

  • Insufficient documentation of the deformity's origin
  • Lack of detailed treatment plans or outcomes
  • Inconsistent coding of related conditions
  • Failure to document functional limitations

Specialty Focus

Medical Specialties

Orthopedics

Documentation Requirements

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

Common Clinical Scenarios

Patients presenting with hip pain, altered gait, or post-surgical complications related to valgus deformities.

Billing Considerations

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

Physical Therapy

Documentation Requirements

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

Common Clinical Scenarios

Patients undergoing rehabilitation for hip valgus deformities post-surgery or due to acquired conditions.

Billing Considerations

Document specific exercises and their impact on the patient's mobility and pain levels.

Coding Guidelines

Inclusion Criteria

Use M21.059 When
  • Follow official ICD
  • 10 coding guidelines, ensuring that the diagnosis is supported by clinical documentation
  • Include any relevant history of trauma or surgery that may have contributed to the deformity

Exclusion Criteria

Do NOT use M21.059 When
  • Exclude congenital conditions unless specified

Related ICD-10 Codes

Related CPT Codes

27130CPT Code

Total hip arthroplasty

Clinical Scenario

Performed in cases of severe valgus deformity leading to joint degeneration.

Documentation Requirements

Pre-operative assessment, imaging studies, and post-operative follow-up notes.

Specialty Considerations

Orthopedic surgeons must document the rationale for surgery and expected outcomes.

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 clinical data and reimbursement processes. However, it also requires coders to be more diligent in documentation and coding practices.

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 clinical data and reimbursement processes. However, it also requires coders to be more diligent in documentation and coding practices.

Reimbursement & Billing Impact

reimbursement processes. However, it also requires coders to be more diligent in documentation and coding practices.

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 M21.059 and M21.05?

M21.059 is used for unspecified hip valgus deformities, while M21.05 refers specifically to valgus deformities of the foot. Accurate coding depends on the specific site of the deformity.