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v1.0.0
ICD-10 Guide
ICD-10 CodesM21.239

M21.239

Billable

Flexion deformity, unspecified wrist

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

Code Description

ICD-10 M21.239 is a billable code used to indicate a diagnosis of flexion deformity, unspecified wrist.

Key Diagnostic Point:

Flexion deformity of the wrist refers to a condition where the wrist is bent forward, resulting in a limited range of motion and functional impairment. This deformity can be acquired due to various factors, including trauma, neurological conditions, or chronic inflammatory diseases. Patients may present with difficulty in performing daily activities, such as gripping or lifting objects, which can significantly impact their quality of life. The condition may also be associated with other deformities of the fingers or toes, such as claw hand or mallet finger, which can complicate the clinical picture. Treatment options often include physical therapy, splinting, and in some cases, surgical intervention to correct the deformity and restore function. The unspecified nature of this code indicates that the specific cause of the flexion deformity has not been determined or documented, which can complicate treatment planning and coding accuracy.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Unspecified nature of the condition complicates diagnosis.
  • Potential overlap with other wrist deformities.
  • Variability in treatment approaches based on underlying causes.
  • Need for detailed documentation to support the diagnosis.

Audit Risk Factors

  • Lack of specificity in documentation.
  • Inconsistent clinical findings.
  • Failure to document the functional impact of the deformity.
  • Inadequate justification for the use of this code.

Specialty Focus

Medical Specialties

Orthopedics

Documentation Requirements

Detailed clinical notes describing the deformity, range of motion assessments, and any imaging studies.

Common Clinical Scenarios

Patients with post-traumatic wrist deformities or those with chronic conditions like rheumatoid arthritis.

Billing Considerations

Ensure that all relevant history and physical examination findings are documented to support the diagnosis.

Physical Medicine and Rehabilitation

Documentation Requirements

Functional assessments and treatment plans that outline the impact of the deformity on daily activities.

Common Clinical Scenarios

Patients undergoing rehabilitation for wrist injuries or deformities.

Billing Considerations

Documenting the patient's progress and response to therapy is crucial for accurate coding.

Coding Guidelines

Inclusion Criteria

Use M21.239 When
  • According to ICD
  • CM guidelines, this code should be used when the specific cause of the flexion deformity is not documented
  • Coders should ensure that the documentation supports the diagnosis and that the condition is not due to a more specific underlying cause

Exclusion Criteria

Do NOT use M21.239 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

25400CPT Code

Wrist arthrodesis

Clinical Scenario

Used in cases where surgical correction of the flexion deformity is necessary.

Documentation Requirements

Operative reports detailing the procedure and indications.

Specialty Considerations

Orthopedic surgeons must document the rationale for surgical intervention.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specificity in coding wrist deformities, but it has also introduced complexity with unspecified codes like M21.239. Coders must be diligent in ensuring accurate documentation to avoid potential denials.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specificity in coding wrist deformities, but it has also introduced complexity with unspecified codes like M21.239. Coders must be diligent in ensuring accurate documentation to avoid potential denials.

Reimbursement & Billing Impact

reimbursement.

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

When should I use M21.239?

Use M21.239 when a patient presents with a flexion deformity of the wrist, and the specific cause or side is not documented. Ensure that the documentation supports the diagnosis.