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ICD-10 Guide
ICD-10 CodesM61.25

M61.25

Billable

Paralytic calcification and ossification of muscle, thigh

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

Code Description

ICD-10 M61.25 is a billable code used to indicate a diagnosis of paralytic calcification and ossification of muscle, thigh.

Key Diagnostic Point:

Paralytic calcification and ossification of muscle, particularly in the thigh, is a condition characterized by the abnormal deposition of calcium salts and the formation of bone tissue within muscle fibers. This condition often arises following muscle paralysis due to various causes, including neurological disorders, trauma, or prolonged immobilization. The calcification can lead to stiffness, pain, and reduced mobility in the affected limb. Clinically, patients may present with muscle weakness, swelling, and tenderness in the thigh region. Diagnosis typically involves imaging studies such as X-rays or MRI to visualize the calcified areas. Treatment may include physical therapy, pain management, and in some cases, surgical intervention to remove the calcified tissue. Understanding the underlying cause of paralysis is crucial for effective management and rehabilitation of the patient.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Requires understanding of muscle pathology and neuromuscular conditions.
  • Differentiation from other muscle disorders can be challenging.
  • Documentation must clearly indicate the cause of paralysis.
  • Need for precise coding based on imaging findings.

Audit Risk Factors

  • Inadequate documentation of the underlying cause of paralysis.
  • Failure to provide imaging results supporting the diagnosis.
  • Misclassification of the site of calcification.
  • Lack of detailed clinical notes on muscle weakness or functional impairment.

Specialty Focus

Medical Specialties

Orthopedics

Documentation Requirements

Detailed notes on physical examination findings, imaging results, and treatment plans.

Common Clinical Scenarios

Patients with post-traumatic muscle calcification or those with neuromuscular disorders.

Billing Considerations

Ensure that the documentation reflects the specific site of calcification and any associated functional limitations.

Neurology

Documentation Requirements

Comprehensive neurological assessment and history of the patient's condition.

Common Clinical Scenarios

Patients with neurological deficits leading to muscle paralysis and subsequent calcification.

Billing Considerations

Document the neurological diagnosis clearly to support the coding of M61.25.

Coding Guidelines

Inclusion Criteria

Use M61.25 When
  • According to ICD
  • 10 coding guidelines, M61
  • 25 should be used when there is clear documentation of calcification and ossification in the thigh muscle due to paralysis
  • It is essential to include the underlying cause of paralysis in the documentation to ensure accurate coding

Exclusion Criteria

Do NOT use M61.25 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

97001CPT Code

Physical therapy evaluation

Clinical Scenario

Used for assessing muscle function and planning rehabilitation for patients with calcification.

Documentation Requirements

Detailed evaluation notes and treatment plan.

Specialty Considerations

Physical therapists should document the extent of muscle weakness and functional limitations.

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 M61.25, improving the accuracy of diagnoses and treatment plans. This specificity aids in better patient management and resource allocation.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of conditions like M61.25, improving the accuracy of diagnoses and treatment plans. This specificity aids in better patient management and resource allocation.

Reimbursement & Billing Impact

reimbursement and compliance.

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 paralytic calcification?

The primary cause of paralytic calcification is muscle paralysis due to neurological conditions, trauma, or prolonged immobilization, leading to abnormal calcium deposition in muscle tissue.