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ICD-10 Guide
ICD-10 CodesM61.31

M61.31

Billable

Calcification and ossification of muscles associated with burns, shoulder

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

Code Description

ICD-10 M61.31 is a billable code used to indicate a diagnosis of calcification and ossification of muscles associated with burns, shoulder.

Key Diagnostic Point:

Calcification and ossification of muscles associated with burns, particularly in the shoulder region, is a condition that arises following thermal injury to the skin and underlying tissues. This pathological process involves the deposition of calcium salts in muscle tissue, leading to stiffness, reduced range of motion, and potential muscle weakness. The condition is often a sequela of severe burns, where the inflammatory response and subsequent healing processes can lead to aberrant mineralization. Patients may experience myositis, characterized by inflammation of the muscle tissue, which can further exacerbate weakness and functional impairment. The shoulder, being a complex joint with a wide range of motion, is particularly susceptible to these changes, resulting in significant functional limitations. Clinicians must assess the extent of calcification and its impact on muscle function, as well as the potential for neuromuscular complications that may arise from the underlying burn injury. Treatment often involves physical therapy, pain management, and in some cases, surgical intervention to remove calcified tissue and restore function.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Requires understanding of burn-related complications
  • Involves knowledge of muscle pathology and healing processes
  • Differentiation from other muscle disorders is necessary
  • Documentation must clearly link burns to muscle calcification

Audit Risk Factors

  • Insufficient documentation linking burns to muscle calcification
  • Inaccurate coding of the specific site (shoulder)
  • Failure to document the severity of the burn
  • Lack of clarity on the functional impact of the condition

Specialty Focus

Medical Specialties

Physical Medicine and Rehabilitation

Documentation Requirements

Detailed assessment of muscle function, range of motion, and impact on daily activities.

Common Clinical Scenarios

Patients recovering from severe burns with limited shoulder mobility.

Billing Considerations

Emphasis on functional outcomes and rehabilitation goals.

Orthopedic Surgery

Documentation Requirements

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

Common Clinical Scenarios

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

Billing Considerations

Need for clear documentation of pre-operative assessments and post-operative outcomes.

Coding Guidelines

Inclusion Criteria

Use M61.31 When
  • According to ICD
  • 10 coding guidelines, M61
  • 31 should be used when there is clear documentation of calcification and ossification of muscles specifically associated with burn injuries in the shoulder
  • It is important to ensure that the documentation supports the diagnosis and that other potential causes of muscle calcification are ruled out

Exclusion Criteria

Do NOT use M61.31 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

97110CPT Code

Therapeutic exercises

Clinical Scenario

Used in conjunction with M61.31 for rehabilitation of shoulder function.

Documentation Requirements

Documentation of exercises performed and progress notes.

Specialty Considerations

Physical therapy notes should detail the impact of calcification on therapy outcomes.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for greater specificity in coding conditions like M61.31, enabling better tracking of burn-related complications and improving the quality of care through targeted interventions.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for greater specificity in coding conditions like M61.31, enabling better tracking of burn-related complications and improving the quality of care through targeted interventions.

Reimbursement & Billing Impact

impact on the patient's functional abilities. Clear linkage between the diagnosis and treatment provided is essential for 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?

The primary cause is the inflammatory response and healing processes following thermal injury, which can lead to aberrant mineralization in muscle tissue.