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ICD-10 Guide
ICD-10 CodesM61.449

M61.449

Billable

Other calcification of muscle, unspecified hand

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

Code Description

ICD-10 M61.449 is a billable code used to indicate a diagnosis of other calcification of muscle, unspecified hand.

Key Diagnostic Point:

M61.449 refers to a condition characterized by abnormal calcification of muscle tissue in the hand, which is not classified under more specific categories. Calcification can occur due to various underlying conditions, including metabolic disorders, trauma, or chronic inflammation. In the context of muscle disorders, calcification may lead to stiffness, pain, and reduced range of motion, impacting the patient's ability to perform daily activities. This condition may be associated with myositis, where inflammation of the muscle tissue occurs, potentially leading to muscle weakness. Neuromuscular conditions can also contribute to or exacerbate calcification, as they may alter muscle metabolism and repair processes. Accurate diagnosis often requires imaging studies, such as X-rays or MRI, to visualize the calcified areas and differentiate them from other pathologies. Treatment may involve physical therapy, pain management, and addressing any underlying conditions contributing to the calcification.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variability in clinical presentation and underlying causes
  • Need for precise documentation of symptoms and imaging results
  • Differentiation from other muscle disorders and calcification types
  • Potential for co-existing conditions that complicate coding

Audit Risk Factors

  • Insufficient documentation of the clinical rationale for the diagnosis
  • Lack of imaging studies to support the diagnosis
  • Inconsistent coding of related conditions
  • Failure to document the impact on functionality

Specialty Focus

Medical Specialties

Rheumatology

Documentation Requirements

Detailed history of symptoms, imaging results, and treatment plans.

Common Clinical Scenarios

Patients presenting with joint pain and muscle stiffness, requiring evaluation for calcification.

Billing Considerations

Consideration of autoimmune conditions that may contribute to calcification.

Orthopedics

Documentation Requirements

Comprehensive assessment of musculoskeletal function and imaging studies.

Common Clinical Scenarios

Post-traumatic calcification in patients with a history of hand injuries.

Billing Considerations

Documentation of functional limitations and rehabilitation progress.

Coding Guidelines

Inclusion Criteria

Use M61.449 When
  • Follow official ICD
  • 10 coding guidelines, ensuring accurate documentation of the condition's specifics
  • Include any relevant history of trauma or underlying diseases that may contribute to calcification
  • Ensure that the code is used only when other more specific codes do not apply

Exclusion Criteria

Do NOT use M61.449 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

73030CPT Code

Radiologic examination, hand, complete, minimum of 3 views

Clinical Scenario

Used to evaluate calcification in the hand muscles.

Documentation Requirements

Include imaging results and clinical findings.

Specialty Considerations

Orthopedic specialists should document functional limitations.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for greater specificity in coding muscle calcification, improving the accuracy of diagnoses and treatment plans. M61.449 provides a clear classification for cases that do not fit into more specific categories.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for greater specificity in coding muscle calcification, improving the accuracy of diagnoses and treatment plans. M61.449 provides a clear classification for cases that do not fit into more specific categories.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for greater specificity in coding muscle calcification, improving the accuracy of diagnoses and treatment plans. M61.449 provides a clear classification for cases that do not fit into more specific categories.

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 are the common causes of muscle calcification?

Common causes include metabolic disorders, trauma, chronic inflammation, and certain systemic diseases. Each case should be evaluated individually to determine the underlying cause.