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ICD-10 Guide
ICD-10 CodesM21.25

M21.25

Billable

Flexion deformity, hip

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

Code Description

ICD-10 M21.25 is a billable code used to indicate a diagnosis of flexion deformity, hip.

Key Diagnostic Point:

Flexion deformity of the hip is characterized by an abnormal positioning of the hip joint where the thigh is bent forward towards the abdomen. This condition can be acquired due to various factors such as trauma, neurological disorders, or prolonged immobilization. Patients may present with limited range of motion, pain, and difficulty in ambulation. The deformity can lead to compensatory changes in gait and posture, potentially resulting in secondary musculoskeletal issues. Treatment often involves physical therapy, bracing, or surgical intervention to correct the deformity and restore function. Understanding the underlying cause is crucial for effective management, as it may influence the choice of corrective procedures, which can include osteotomy or soft tissue release. 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 (neurological, traumatic, etc.)
  • Need for detailed documentation of functional limitations
  • Potential for multiple co-existing conditions
  • Variability in treatment approaches and outcomes

Audit Risk Factors

  • Inadequate documentation of the deformity's impact on function
  • Failure to specify the underlying cause of the deformity
  • Incorrect linkage to surgical procedures
  • Lack of follow-up documentation post-treatment

Specialty Focus

Medical Specialties

Orthopedic Surgery

Documentation Requirements

Detailed surgical notes, pre-operative assessments, and post-operative follow-ups are essential.

Common Clinical Scenarios

Patients presenting with hip flexion deformities due to trauma or congenital issues requiring surgical correction.

Billing Considerations

Ensure to document the specific type of corrective procedure performed and the rationale for the approach.

Physical Medicine and Rehabilitation

Documentation Requirements

Comprehensive evaluations of functional limitations and treatment plans.

Common Clinical Scenarios

Patients undergoing rehabilitation for hip flexion deformities post-surgery or due to neurological conditions.

Billing Considerations

Documenting progress and functional outcomes is critical for ongoing treatment and coding.

Coding Guidelines

Inclusion Criteria

Use M21.25 When
  • Follow official ICD
  • 10 guidelines for coding deformities, ensuring to document the specific nature of the flexion deformity and any associated conditions
  • Include details on the patient's functional status and treatment plan

Exclusion Criteria

Do NOT use M21.25 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

27130CPT Code

Hip osteotomy

Clinical Scenario

Used for surgical correction of hip flexion deformity.

Documentation Requirements

Operative report detailing the procedure and indications.

Specialty Considerations

Orthopedic surgeons must document pre-operative assessments and post-operative outcomes.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of hip deformities, improving the accuracy of patient records and reimbursement processes. M21.25 provides a clear distinction for acquired conditions, enhancing clinical understanding and management.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of hip deformities, improving the accuracy of patient records and reimbursement processes. M21.25 provides a clear distinction for acquired conditions, enhancing clinical understanding and management.

Reimbursement & Billing Impact

reimbursement processes. M21.25 provides a clear distinction for acquired conditions, 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 are the common causes of hip flexion deformity?

Common causes include neurological conditions, trauma, prolonged immobilization, and certain musculoskeletal disorders.