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ICD-10 Guide
ICD-10 CodesM61.379

M61.379

Billable

Calcification and ossification of muscles associated with burns, unspecified ankle and foot

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

Code Description

ICD-10 M61.379 is a billable code used to indicate a diagnosis of calcification and ossification of muscles associated with burns, unspecified ankle and foot.

Key Diagnostic Point:

Calcification and ossification of muscles associated with burns is a condition characterized by the abnormal deposition of calcium salts and bone-like material in muscle tissue following thermal injury. This process can lead to muscle stiffness, pain, and impaired mobility, particularly in the ankle and foot regions. The condition often arises as a complication of severe burns, where the healing process triggers an inflammatory response that can result in myositis, or inflammation of the muscle. Over time, this inflammation can lead to muscle weakness and dysfunction due to the formation of calcified deposits. Patients may experience reduced range of motion and increased discomfort, which can significantly impact their rehabilitation and recovery. The diagnosis typically involves imaging studies, such as X-rays or MRI, to visualize the calcifications and assess the extent of muscle involvement. Treatment may include physical therapy, pain management, and in some cases, surgical intervention to remove the calcified tissue.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Requires understanding of burn-related complications
  • Differentiation from other muscle disorders
  • Need for precise documentation of burn severity
  • Potential for co-morbid conditions affecting coding

Audit Risk Factors

  • Inadequate documentation of burn severity
  • Failure to specify the affected muscle group
  • Misinterpretation of calcification vs. ossification
  • Lack of imaging studies to support diagnosis

Specialty Focus

Medical Specialties

Physical Medicine and Rehabilitation

Documentation Requirements

Detailed assessment of muscle function and range of motion, including specific notes on burn history.

Common Clinical Scenarios

Patients recovering from severe burns with muscle stiffness and pain.

Billing Considerations

Documentation should clearly outline the relationship between burn injury and muscle calcification.

Orthopedic Surgery

Documentation Requirements

Surgical notes detailing the extent of calcification and any surgical interventions performed.

Common Clinical Scenarios

Surgical removal of calcified muscle tissue in patients with significant mobility impairment.

Billing Considerations

Ensure that the surgical necessity is well-documented to support the use of this code.

Coding Guidelines

Inclusion Criteria

Use M61.379 When
  • Follow the official ICD
  • CM coding guidelines, ensuring that the code is used only when there is clear documentation of calcification or ossification related to burn injuries

Exclusion Criteria

Do NOT use M61.379 When
  • Exclude conditions that do not meet the criteria for this specific diagnosis

Related ICD-10 Codes

Related CPT Codes

97110CPT Code

Therapeutic exercises

Clinical Scenario

Used in conjunction with M61.379 for rehabilitation of affected muscles.

Documentation Requirements

Documentation of the patient's progress and specific exercises performed.

Specialty Considerations

Physical therapy notes should correlate with the diagnosis for proper billing.

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 calcification and ossification associated with burns, 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 calcification and ossification associated with burns, 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 primary cause of calcification in muscles associated with burns?

The primary cause is the inflammatory response triggered by severe burns, which can lead to myositis and subsequent calcification or ossification of muscle tissue.