Myositis ossificans progressiva, other site
ICD-10 M61.18 is a billable code used to indicate a diagnosis of myositis ossificans progressiva, other site.
Myositis ossificans progressiva (MOP) is a rare genetic disorder characterized by the abnormal formation of bone in muscles, tendons, and other connective tissues. This condition typically begins in early childhood and progresses over time, leading to significant muscle weakness and restricted mobility. The hallmark of MOP is the formation of heterotopic ossification, where soft tissues become calcified, resulting in painful muscle stiffness and decreased range of motion. The condition is often misdiagnosed as trauma or other muscle disorders due to its progressive nature and the variability of symptoms. Patients may experience episodes of swelling and inflammation in the affected muscles, which can be exacerbated by physical activity or injury. Diagnosis is primarily clinical, supported by imaging studies that reveal abnormal bone formation. Genetic testing can confirm mutations in the ACVR1 gene, which are responsible for the condition. Management focuses on symptomatic relief, physical therapy, and avoiding invasive procedures that may trigger further ossification. Understanding the complexities of MOP is crucial for accurate coding and effective patient management.
Detailed clinical notes on muscle weakness, pain, and mobility limitations; imaging studies; and genetic testing results.
Patients presenting with unexplained muscle stiffness, swelling, or pain, particularly after minor injuries.
Rheumatologists should be aware of the genetic component and the need for multidisciplinary management.
Comprehensive family history, genetic testing results, and detailed clinical evaluations.
Patients with a family history of myositis ossificans or unexplained ossification.
Geneticists must ensure accurate coding based on confirmed genetic mutations.
Used for follow-up visits for management of myositis ossificans.
Detailed history, examination findings, and treatment plan.
Rheumatologists should document the progression of symptoms and treatment response.
Myositis ossificans progressiva is a rare genetic disorder characterized by the abnormal formation of bone in muscles and connective tissues, leading to progressive muscle weakness and stiffness.
