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ICD-10 Guide
ICD-10 CodesM61.331

M61.331

Billable

Calcification and ossification of muscles associated with burns, right forearm

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

Code Description

ICD-10 M61.331 is a billable code used to indicate a diagnosis of calcification and ossification of muscles associated with burns, right forearm.

Key Diagnostic Point:

Calcification and ossification of muscles associated with burns is a condition that arises following thermal injury to the skin and underlying tissues, particularly in the context of severe burns. This condition is characterized by the deposition of calcium salts in muscle tissue, leading to stiffness, pain, and reduced mobility in the affected area. In the case of the right forearm, the calcification may result from the body's healing response to the burn injury, where the damaged muscle tissue undergoes pathological changes. This can lead to myositis, which is inflammation of the muscle, and may contribute to muscle weakness and neuromuscular dysfunction. Patients may experience significant limitations in their range of motion and functional capacity, necessitating rehabilitation and possibly surgical intervention to restore normal function. The management of this condition often involves a multidisciplinary approach, including physical therapy, pain management, and in some cases, surgical excision of calcified tissue.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Specificity of the location (right forearm) requires precise documentation.
  • Differentiation from other muscle disorders such as myositis or muscle atrophy.
  • Need for comprehensive documentation of burn severity and treatment history.
  • Potential for co-existing conditions that may complicate coding.

Audit Risk Factors

  • Inadequate documentation of burn severity and treatment.
  • Failure to specify the affected muscle group.
  • Misclassification of the condition as a different muscle disorder.
  • Lack of supporting clinical evidence for calcification or ossification.

Specialty Focus

Medical Specialties

Physical Medicine and Rehabilitation

Documentation Requirements

Detailed assessment of muscle function, range of motion, and pain levels.

Common Clinical Scenarios

Patients recovering from severe burns with muscle stiffness and weakness.

Billing Considerations

Documentation should include rehabilitation progress and any interventions performed.

Plastic Surgery

Documentation Requirements

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

Common Clinical Scenarios

Surgical excision of calcified muscle tissue following burn injuries.

Billing Considerations

Ensure that surgical notes clearly outline the extent of the burn and the rationale for procedures performed.

Coding Guidelines

Inclusion Criteria

Use M61.331 When
  • According to ICD
  • 10 coding guidelines, M61
  • 331 should be used when there is clear documentation of calcification and ossification of muscles specifically associated with burns in the right forearm
  • It is important to ensure that the documentation supports the diagnosis and includes details about the burn injury

Exclusion Criteria

Do NOT use M61.331 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

97110CPT Code

Therapeutic exercises

Clinical Scenario

Used for rehabilitation of muscle function post-burn injury.

Documentation Requirements

Documentation of the patient's functional limitations and goals for therapy.

Specialty Considerations

Physical therapy notes should detail the specific exercises and progress made.

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 calcification and ossification of muscles associated with burns. This specificity aids in better tracking of outcomes and resource allocation for rehabilitation services.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for greater specificity in coding conditions like calcification and ossification of muscles associated with burns. This specificity aids in better tracking of outcomes and resource allocation for rehabilitation services.

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 documentation is required to support the use of M61.331?

Documentation should include a detailed history of the burn injury, clinical findings related to muscle calcification, imaging studies, and treatment plans that demonstrate the impact on muscle function.