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ICD-10 Guide
ICD-10 CodesM61.439

M61.439

Billable

Other calcification of muscle, unspecified forearm

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

Code Description

ICD-10 M61.439 is a billable code used to indicate a diagnosis of other calcification of muscle, unspecified forearm.

Key Diagnostic Point:

M61.439 refers to a condition characterized by abnormal calcification in the muscle tissue of the forearm, which is not classified under more specific categories of muscle calcification. This condition can arise from various underlying causes, including metabolic disorders, trauma, or inflammatory processes. Calcification in muscle tissue can lead to stiffness, pain, and reduced range of motion, impacting the patient's ability to perform daily activities. In some cases, it may be associated with myositis, where inflammation of the muscle occurs, potentially leading to muscle weakness. The calcification may be detected through imaging studies such as X-rays or MRI, which can reveal the extent and location of the calcified areas. Treatment often focuses on managing symptoms and addressing any underlying conditions, which may include physical therapy, medications, or in severe cases, surgical intervention. Accurate coding is essential for proper reimbursement and to ensure that the patient's medical history reflects the complexity of their condition.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variability in underlying causes of calcification
  • Need for precise documentation of symptoms and imaging results
  • Differentiation from other muscle disorders
  • Potential overlap with myositis and other neuromuscular conditions

Audit Risk Factors

  • Insufficient documentation of the cause of calcification
  • Lack of imaging studies to support diagnosis
  • Inconsistent clinical notes regarding symptoms
  • Failure to document treatment plans or responses

Specialty Focus

Medical Specialties

Rheumatology

Documentation Requirements

Detailed clinical notes on symptoms, physical examination findings, and imaging results.

Common Clinical Scenarios

Patients presenting with muscle pain and stiffness, particularly after trauma or in the context of autoimmune diseases.

Billing Considerations

Consideration of comorbid conditions that may contribute to muscle calcification.

Orthopedics

Documentation Requirements

Surgical notes, imaging studies, and post-operative assessments.

Common Clinical Scenarios

Patients with calcification following orthopedic surgery or trauma.

Billing Considerations

Documentation of the surgical procedure and any complications related to calcification.

Coding Guidelines

Inclusion Criteria

Use M61.439 When
  • According to ICD
  • 10 guidelines, M61
  • 439 should be used when the calcification is not specified as due to trauma or metabolic disorders
  • Coders should ensure that the documentation supports the use of this code and that all relevant clinical information is included

Exclusion Criteria

Do NOT use M61.439 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

73030CPT Code

Radiologic examination, forearm

Clinical Scenario

Used when imaging is performed to assess calcification in the forearm muscles.

Documentation Requirements

Radiology report must clearly indicate the presence of calcification.

Specialty Considerations

Orthopedic specialists may frequently order this imaging.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of muscle calcification, improving the accuracy of patient records and reimbursement processes. M61.439 provides a means to capture cases that do not fit neatly into other categories.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of muscle calcification, improving the accuracy of patient records and reimbursement processes. M61.439 provides a means to capture cases that do not fit neatly into other categories.

Reimbursement & Billing Impact

reimbursement processes. M61.439 provides a means to capture cases that do not fit neatly into other categories.

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 muscle calcification?

Common causes include trauma, metabolic disorders, and chronic inflammatory conditions. Each cause may require different management strategies.