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ICD-10 Guide
ICD-10 CodesM61.141

M61.141

Billable

Myositis ossificans progressiva, right hand

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

Code Description

ICD-10 M61.141 is a billable code used to indicate a diagnosis of myositis ossificans progressiva, right hand.

Key Diagnostic Point:

Myositis ossificans progressiva (MOP) is a rare genetic disorder characterized by the abnormal formation of bone in muscles and connective tissues. This condition typically manifests after trauma or injury, leading to progressive ossification of soft tissues, particularly in the limbs. In the case of M61.141, the focus is on the right hand, where muscle weakness and stiffness may occur due to the formation of heterotopic bone. Patients often experience significant pain and reduced range of motion, which can severely impact daily activities. The condition is caused by mutations in the ACVR1 gene, which plays a critical role in bone growth and development. Diagnosis is primarily clinical, supported by imaging studies that reveal calcification in soft tissues. Management is symptomatic, focusing on pain relief and maintaining mobility, as surgical intervention is often complicated by the risk of further ossification. Understanding the nuances of this condition is essential for accurate coding and appropriate patient management.

Code Complexity Analysis

Complexity Rating: High

High Complexity

Complexity Factors

  • Rare condition with limited awareness among coders
  • Specificity required for anatomical location (right hand)
  • Potential for misdiagnosis with other myositis conditions
  • Need for detailed documentation of clinical findings

Audit Risk Factors

  • Inadequate documentation of clinical findings
  • Failure to specify the affected anatomical site
  • Misclassification with other myositis or muscle disorders
  • Lack of supporting imaging studies in the medical record

Specialty Focus

Medical Specialties

Rheumatology

Documentation Requirements

Detailed clinical history, physical examination findings, imaging results, and treatment plans.

Common Clinical Scenarios

Patients presenting with progressive muscle stiffness and pain following trauma.

Billing Considerations

Ensure clear documentation of the genetic basis and any family history of similar conditions.

Orthopedics

Documentation Requirements

Surgical notes, imaging studies, and post-operative care documentation.

Common Clinical Scenarios

Patients requiring surgical intervention for bone formation in soft tissues.

Billing Considerations

Document the risks of surgery related to potential for further ossification.

Coding Guidelines

Inclusion Criteria

Use M61.141 When
  • Follow the official ICD
  • CM coding guidelines, ensuring accurate documentation of the condition's specifics, including the anatomical site and any associated symptoms

Exclusion Criteria

Do NOT use M61.141 When
  • Exclude conditions that do not meet the criteria for myositis ossificans progressiva

Related ICD-10 Codes

Related CPT Codes

20610CPT Code

Arthrocentesis, aspiration and/or injection into a major joint or bursa

Clinical Scenario

Used when joint aspiration is needed due to swelling from myositis ossificans.

Documentation Requirements

Document the reason for aspiration and findings during the procedure.

Specialty Considerations

Orthopedic specialists should ensure clear linkage between the diagnosis and the procedure.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of rare conditions like myositis ossificans progressiva, improving data accuracy and facilitating better patient management.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of rare conditions like myositis ossificans progressiva, improving data accuracy and facilitating better patient management.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of rare conditions like myositis ossificans progressiva, improving data accuracy and facilitating better patient management.

Resources

Clinical References

  • •
    Myositis ossificans progressiva overview

Coding & Billing References

  • •
    Myositis ossificans progressiva overview

Frequently Asked Questions

What are the common symptoms of myositis ossificans progressiva?

Common symptoms include progressive muscle stiffness, pain in the affected area, and reduced range of motion. Symptoms often worsen following trauma.