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ICD-10 Guide
ICD-10 CodesM61.532

M61.532

Billable

Other ossification of muscle, left forearm

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

Code Description

ICD-10 M61.532 is a billable code used to indicate a diagnosis of other ossification of muscle, left forearm.

Key Diagnostic Point:

M61.532 refers to a condition characterized by abnormal bone formation within the muscle tissue of the left forearm. This ossification can occur due to various factors, including trauma, repetitive strain, or certain myopathies. The presence of ossification can lead to muscle stiffness, reduced range of motion, and pain, significantly impacting the patient's quality of life. Clinically, this condition may be associated with myositis, where inflammation of the muscle tissue occurs, potentially leading to muscle weakness and neuromuscular dysfunction. Diagnosis typically involves imaging studies such as X-rays or MRI to visualize the ossified areas and assess the extent of muscle involvement. Treatment may include physical therapy, pain management, and in some cases, surgical intervention to remove the ossified tissue if it severely restricts movement or causes significant discomfort.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Differentiating between ossification due to trauma versus idiopathic causes.
  • Understanding the relationship between myositis and ossification.
  • Need for precise documentation of muscle involvement and symptoms.
  • Potential for co-existing conditions that may complicate coding.

Audit Risk Factors

  • Inadequate documentation of the clinical rationale for ossification.
  • Failure to specify the exact muscle involved.
  • Misclassification of the condition as a primary diagnosis without supporting evidence.
  • Inconsistent coding of associated conditions like myositis.

Specialty Focus

Medical Specialties

Orthopedics

Documentation Requirements

Detailed imaging reports, surgical notes if applicable, and physical examination findings.

Common Clinical Scenarios

Patients presenting with pain and limited mobility in the left forearm post-injury.

Billing Considerations

Documentation must clearly outline the relationship between ossification and any prior trauma.

Rheumatology

Documentation Requirements

Comprehensive history of muscle symptoms, laboratory results indicating myositis, and treatment plans.

Common Clinical Scenarios

Patients with autoimmune conditions presenting with muscle weakness and ossification.

Billing Considerations

Must differentiate between primary muscle disorders and secondary ossification due to systemic conditions.

Coding Guidelines

Inclusion Criteria

Use M61.532 When
  • Follow official ICD
  • 10 coding guidelines, ensuring accurate documentation of the condition's etiology and associated symptoms
  • Include any relevant imaging studies and treatment plans in the medical record

Exclusion Criteria

Do NOT use M61.532 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

20610CPT Code

Arthrocentesis, aspiration and/or injection into a major joint or bursa

Clinical Scenario

Used when a patient with ossification also presents with joint effusion.

Documentation Requirements

Document the reason for the procedure and any imaging findings.

Specialty Considerations

Orthopedic specialists should ensure clear documentation of the relationship between the procedure and the diagnosis.

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 M61.532, improving the accuracy of diagnoses and treatment tracking. This specificity aids in better patient management and resource allocation.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of conditions like M61.532, improving the accuracy of diagnoses and treatment tracking. This specificity aids in better patient management and resource allocation.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of conditions like M61.532, improving the accuracy of diagnoses and treatment tracking. This specificity aids in better patient management and resource allocation.

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 symptoms associated with M61.532?

Common symptoms include pain, stiffness, and reduced range of motion in the left forearm, often following trauma or repetitive strain.