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ICD-10 Guide
ICD-10 CodesM21.249

M21.249

Billable

Flexion deformity, unspecified finger joints

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

Code Description

ICD-10 M21.249 is a billable code used to indicate a diagnosis of flexion deformity, unspecified finger joints.

Key Diagnostic Point:

Flexion deformity of the finger joints refers to a condition where one or more fingers exhibit an abnormal bending or flexing at the joints, leading to a reduced range of motion and functional impairment. This condition can be acquired due to various factors such as trauma, arthritis, or neurological disorders. Acquired flexion deformities may arise from conditions like Dupuytren's contracture, where thickening of the palmar fascia leads to the fingers being pulled towards the palm. Other causes include post-surgical complications, scarring, or prolonged immobilization. The severity of the deformity can vary, impacting the patient's ability to perform daily activities, and may necessitate corrective procedures. Treatment options often include physical therapy, splinting, or surgical interventions to restore function and alleviate discomfort. 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

  • Variability in clinical presentation and severity of the deformity
  • Differentiation from other finger joint conditions
  • Need for detailed documentation of the underlying cause
  • Potential for multiple co-existing conditions affecting the fingers

Audit Risk Factors

  • Insufficient documentation of the deformity's cause
  • Lack of detailed treatment plans
  • Inconsistent use of the code across different encounters
  • Failure to document co-existing conditions

Specialty Focus

Medical Specialties

Orthopedics

Documentation Requirements

Detailed notes on the patient's history, physical examination findings, and treatment plans.

Common Clinical Scenarios

Patients presenting with post-traumatic flexion deformities or degenerative joint disease.

Billing Considerations

Ensure to document any surgical interventions or physical therapy outcomes.

Physical Medicine and Rehabilitation

Documentation Requirements

Comprehensive assessments of functional limitations and rehabilitation goals.

Common Clinical Scenarios

Patients requiring rehabilitation after surgery for flexion deformities.

Billing Considerations

Document the patient's progress and response to therapy to support ongoing treatment.

Coding Guidelines

Inclusion Criteria

Use M21.249 When
  • According to ICD
  • 10 guidelines, M21
  • 249 should be used when the specific finger joints affected are not documented
  • Coders should ensure that the underlying cause of the deformity is well
  • documented to support the use of this code

Exclusion Criteria

Do NOT use M21.249 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

26340CPT Code

Release of Dupuytren's contracture

Clinical Scenario

Used when surgical intervention is performed to correct the flexion deformity.

Documentation Requirements

Operative notes detailing the procedure and pre-operative assessment.

Specialty Considerations

Orthopedic surgeons should ensure comprehensive documentation of the deformity and surgical rationale.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of flexion deformities, improving the ability to capture the complexity of these conditions and their treatment needs.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of flexion deformities, improving the ability to capture the complexity of these conditions and their treatment needs.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of flexion deformities, improving the ability to capture the complexity of these conditions and their treatment needs.

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 documentation is needed to support the use of M21.249?

Documentation should include a detailed history of the condition, physical examination findings, any imaging studies, and a treatment plan that outlines the necessity for the code.