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ICD-10 Guide
ICD-10 CodesM21.241

M21.241

Billable

Flexion deformity, right finger joints

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

Code Description

ICD-10 M21.241 is a billable code used to indicate a diagnosis of flexion deformity, right finger joints.

Key Diagnostic Point:

Flexion deformity of the finger joints refers to a condition where one or more joints in the fingers are bent in a flexed position, limiting the ability to extend the fingers fully. This acquired deformity can arise from various causes, including trauma, arthritis, or neurological conditions. In the case of the right finger joints, the deformity may affect the proximal interphalangeal (PIP) and distal interphalangeal (DIP) joints, leading to functional impairment and discomfort. Patients may experience difficulty in gripping objects, performing fine motor tasks, and may have associated pain or stiffness. Treatment options often include physical therapy, splinting, or surgical interventions such as tendon release or joint fusion, depending on the severity and underlying cause of the deformity. 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

  • Differentiating between acquired and congenital deformities
  • Identifying the specific joints affected
  • Documenting the underlying cause of the deformity
  • Understanding the impact on functionality and daily activities

Audit Risk Factors

  • Inadequate documentation of the deformity's cause
  • Failure to specify the affected joints
  • Lack of evidence for functional impairment
  • Incorrect coding of associated conditions

Specialty Focus

Medical Specialties

Orthopedics

Documentation Requirements

Detailed notes on the patient's history, physical examination findings, and imaging studies.

Common Clinical Scenarios

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

Billing Considerations

Ensure to document any previous surgeries or treatments that may have contributed to the deformity.

Physical Medicine and Rehabilitation

Documentation Requirements

Comprehensive assessment of functional limitations and treatment plans.

Common Clinical Scenarios

Patients undergoing rehabilitation post-surgery or those with chronic conditions affecting finger mobility.

Billing Considerations

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

Coding Guidelines

Inclusion Criteria

Use M21.241 When
  • Follow the official ICD
  • CM coding guidelines, ensuring to capture the specific details of the deformity, including laterality and any associated conditions

Exclusion Criteria

Do NOT use M21.241 When
  • Exclude congenital deformities unless specified

Related ICD-10 Codes

Related CPT Codes

26340CPT Code

Tenotomy, finger flexor tendon

Clinical Scenario

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

Documentation Requirements

Document the indication for surgery, pre-operative assessments, and post-operative care.

Specialty Considerations

Orthopedic surgeons should provide detailed operative notes.

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 flexion deformities, improving the accuracy of patient records and reimbursement processes.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of conditions like flexion deformities, improving the accuracy of patient records and reimbursement processes.

Reimbursement & Billing Impact

reimbursement processes.

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 M21.241 and M21.240?

M21.241 refers specifically to flexion deformity of the right finger joints, while M21.240 refers to the left finger joints. Accurate coding requires specifying the affected side.