Myositis ossificans progressiva, right upper arm
ICD-10 M61.121 is a billable code used to indicate a diagnosis of myositis ossificans progressiva, right upper arm.
Myositis ossificans progressiva (MOP) is a rare genetic disorder characterized by the abnormal formation of bone in muscle and connective tissues. This condition typically presents in early childhood and is marked by episodes of painful swelling and stiffness in the affected muscles, often leading to significant muscle weakness and reduced mobility. In the case of M61.121, the condition specifically affects the right upper arm, which may result in limited range of motion and functional impairment. The pathophysiology involves a mutation in the ACVR1 gene, leading to dysregulation of bone morphogenetic proteins (BMPs) that promote ossification. Diagnosis is primarily clinical, supported by imaging studies that reveal heterotopic ossification. Management focuses on symptomatic relief, physical therapy, and avoiding trauma to the affected areas, as injury can exacerbate ossification. Understanding the complexities of this condition is crucial for accurate coding and appropriate patient management.
Detailed history of symptoms, physical examination findings, and imaging results.
Patients presenting with unexplained muscle pain and swelling, particularly in the upper extremities.
Documentation should emphasize the genetic component and any family history of similar conditions.
Genetic testing results and family pedigree analysis.
Patients with a family history of myositis ossificans or related disorders seeking genetic counseling.
Ensure that genetic testing results are clearly documented to support the diagnosis.
Used for follow-up visits to monitor the patient's condition.
Document the patient's history, examination findings, and any changes in treatment.
Rheumatologists should ensure that the visit details reflect the complexity of managing myositis ossificans.
Myositis ossificans progressiva is a rare genetic disorder characterized by the abnormal formation of bone in muscle and connective tissues, leading to progressive stiffness and functional impairment.
