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ICD-10 Guide
ICD-10 CodesM61.222

M61.222

Billable

Paralytic calcification and ossification of muscle, left upper arm

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

Code Description

ICD-10 M61.222 is a billable code used to indicate a diagnosis of paralytic calcification and ossification of muscle, left upper arm.

Key Diagnostic Point:

Paralytic calcification and ossification of muscle, specifically in the left upper arm, is a condition characterized by the abnormal deposition of calcium salts in muscle tissue, leading to stiffness, pain, and reduced mobility. This condition often arises following muscle paralysis due to various underlying neuromuscular disorders, trauma, or prolonged immobilization. The calcification process can result in the transformation of muscle tissue into bone-like structures, a phenomenon known as myositis ossificans. Clinically, patients may present with muscle weakness, tenderness, and limited range of motion in the affected arm. Diagnosis typically involves imaging studies such as X-rays or MRI to visualize calcified areas and differentiate from other conditions. Treatment may include physical therapy, pain management, and in some cases, surgical intervention to remove 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 specific muscle disorders and their implications.
  • Differentiation from other calcification disorders.
  • Need for precise documentation of the affected muscle and side.
  • Potential overlap with other neuromuscular conditions.

Audit Risk Factors

  • Inadequate documentation of muscle weakness or paralysis.
  • Failure to specify the exact location of calcification.
  • Lack of imaging studies to support diagnosis.
  • Misclassification of the condition as a different muscle disorder.

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 calcification or those with neuromuscular disorders requiring orthopedic intervention.

Billing Considerations

Documentation must clearly outline the functional impact of the condition on the patient's daily activities.

Neurology

Documentation Requirements

Comprehensive neurological assessments, including muscle strength testing and reflex evaluations.

Common Clinical Scenarios

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

Billing Considerations

Neurological evaluations should correlate with imaging findings to support the diagnosis.

Coding Guidelines

Inclusion Criteria

Use M61.222 When
  • According to ICD
  • 10 guidelines, M61
  • 222 should be used when there is clear documentation of calcification and ossification in the left upper arm muscle
  • It is essential to include the underlying cause of paralysis if known

Exclusion Criteria

Do NOT use M61.222 When
  • Exclusion criteria include conditions not related to muscle calcification

Related ICD-10 Codes

Related CPT Codes

97001CPT Code

Physical therapy evaluation

Clinical Scenario

Used for initial assessment of muscle function and planning treatment.

Documentation Requirements

Detailed evaluation of muscle strength and range of motion.

Specialty Considerations

Physical therapists should document specific findings related to muscle calcification.

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 M61.222, 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 M61.222, improving the accuracy of diagnoses and treatment plans. This specificity aids in better patient management 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 neurological conditions, trauma, or prolonged immobilization, leading to abnormal calcium deposition in muscle tissue.