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ICD-10 Guide
ICD-10 CodesM61.252

M61.252

Billable

Paralytic calcification and ossification of muscle, left thigh

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

Code Description

ICD-10 M61.252 is a billable code used to indicate a diagnosis of paralytic calcification and ossification of muscle, left thigh.

Key Diagnostic Point:

Paralytic calcification and ossification of muscle, specifically in the left thigh, is a condition characterized by the abnormal deposition of calcium salts and bone-like tissue within the muscle. This condition often arises following muscle paralysis due to various underlying neuromuscular disorders, trauma, or prolonged immobilization. The calcification process can lead to stiffness, pain, and reduced mobility in the affected limb. Patients may present with muscle weakness, and the condition can be associated with myositis, where inflammation of the muscle tissue occurs. Diagnosis typically involves imaging studies such as X-rays or MRI to visualize the calcified areas, alongside a thorough clinical evaluation to determine the underlying cause of muscle paralysis. Treatment may include physical therapy, pain management, and in some cases, surgical intervention to remove the calcified tissue. Understanding the etiology and progression of this condition is crucial for effective management and rehabilitation.

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 site and nature of calcification.
  • Potential for co-morbid conditions that may complicate coding.

Audit Risk Factors

  • Inadequate documentation of the underlying cause of paralysis.
  • Failure to specify the affected muscle group accurately.
  • Lack of imaging studies to support the diagnosis.
  • Misinterpretation of calcification as a normal finding.

Specialty Focus

Medical Specialties

Orthopedics

Documentation Requirements

Detailed imaging reports and clinical notes outlining the extent of calcification and any associated injuries.

Common Clinical Scenarios

Patients with post-traumatic muscle calcification or those with immobilization due to orthopedic procedures.

Billing Considerations

Orthopedic specialists should ensure that all relevant imaging and clinical findings are documented to support the diagnosis.

Neurology

Documentation Requirements

Comprehensive neurological evaluations and history of neuromuscular disorders leading to paralysis.

Common Clinical Scenarios

Patients with neuromuscular diseases presenting with muscle weakness and subsequent calcification.

Billing Considerations

Neurologists must document the progression of the neuromuscular condition and its impact on muscle function.

Coding Guidelines

Inclusion Criteria

Use M61.252 When
  • According to ICD
  • 10 coding guidelines, M61
  • 252 should be used when there is clear documentation of calcification and ossification in the left thigh muscle, with a specified underlying cause
  • It is important to ensure that the documentation supports the diagnosis and that any related conditions are also coded appropriately

Exclusion Criteria

Do NOT use M61.252 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

73030CPT Code

Radiologic examination, thigh, complete, including hip and knee

Clinical Scenario

Used when imaging is required to assess calcification in the left thigh muscle.

Documentation Requirements

Radiology report must clearly indicate the findings of calcification.

Specialty Considerations

Orthopedic and neurology specialists should ensure imaging is linked to the diagnosis.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of muscle disorders, including paralytic calcification and ossification. This specificity aids in better tracking of conditions and outcomes, allowing for improved patient care and resource allocation.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of muscle disorders, including paralytic calcification and ossification. This specificity aids in better tracking of conditions and outcomes, allowing for improved patient care and resource allocation.

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 paralytic calcification?

Paralytic calcification is primarily caused by muscle paralysis due to various conditions, including trauma, neuromuscular diseases, or prolonged immobilization.