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ICD-10 Guide
ICD-10 CodesM61.329

M61.329

Billable

Calcification and ossification of muscles associated with burns, unspecified upper arm

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

Code Description

ICD-10 M61.329 is a billable code used to indicate a diagnosis of calcification and ossification of muscles associated with burns, unspecified upper arm.

Key Diagnostic Point:

Calcification and ossification of muscles associated with burns is a condition that occurs when muscle tissue undergoes abnormal mineralization following thermal injury. This process can lead to stiffness, pain, and functional impairment in the affected area, particularly in the upper arm. The calcification may result from the body's healing response to the burn, where calcium deposits form in the muscle tissue as part of the inflammatory process. Patients may experience muscle weakness and reduced range of motion, which can significantly impact their rehabilitation and recovery. The condition is often associated with myositis, an inflammation of the muscle tissue, which can further complicate recovery. Clinicians must assess the extent of the burn and the degree of muscle involvement to determine appropriate treatment strategies, which may include physical therapy, pain management, and in some cases, surgical intervention to remove calcified tissue. Accurate coding is essential for proper treatment planning and reimbursement.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Requires understanding of burn classifications and their effects on muscle tissue.
  • Differentiation from other muscle disorders such as myositis or muscle atrophy.
  • Need for precise documentation of burn severity and muscle involvement.
  • Potential for overlapping symptoms with other neuromuscular conditions.

Audit Risk Factors

  • Inadequate documentation of burn severity and muscle involvement.
  • Failure to specify the location of calcification or ossification.
  • Misclassification of the condition as a primary diagnosis when it is secondary.
  • Lack of supporting clinical evidence for the diagnosis.

Specialty Focus

Medical Specialties

Physical Medicine and Rehabilitation

Documentation Requirements

Detailed documentation of functional limitations, treatment plans, and progress notes.

Common Clinical Scenarios

Patients recovering from severe burns with muscle stiffness and weakness.

Billing Considerations

Emphasis on rehabilitation goals and multidisciplinary approaches.

Plastic Surgery

Documentation Requirements

Comprehensive records of surgical interventions and outcomes related to burn treatment.

Common Clinical Scenarios

Reconstructive surgeries following burn injuries with muscle involvement.

Billing Considerations

Coordination with rehabilitation specialists for optimal recovery.

Coding Guidelines

Inclusion Criteria

Use M61.329 When
  • Follow official ICD
  • 10 coding guidelines, ensuring accurate documentation of the burn's extent and the specific muscle involvement
  • Include any relevant comorbidities and complications to support the diagnosis

Exclusion Criteria

Do NOT use M61.329 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

97110CPT Code

Therapeutic exercises

Clinical Scenario

Used for rehabilitation of muscle strength and flexibility post-burn.

Documentation Requirements

Document specific exercises performed and patient progress.

Specialty Considerations

Physical therapy documentation must align with rehabilitation goals.

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 of muscles, improving the accuracy of patient records and facilitating better treatment planning.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of conditions like calcification and ossification of muscles, improving the accuracy of patient records and facilitating better treatment planning.

Reimbursement & Billing Impact

reimbursement.

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?

Calcification in muscles following burns is primarily due to the body's inflammatory response to injury, leading to abnormal mineralization of muscle tissue.