Paralytic calcifcn and ossification of muscle, r low leg

This diagnosis code signifies the abnormal hardening and formation of bone-like tissue within the muscles of the right lower leg, specifically occurring as a consequence of paralysis. This process, known as myositis ossificans, leads to restricted muscle function and pain due to the ossified mass. It is a non-neoplastic condition where fibrous tissue and cartilage differentiate into bone.

Use this code when documentation clearly indicates myositis ossificans affecting the muscles of the right lower leg, and the etiology is directly linked to a paralytic condition. Supporting documentation should include imaging reports (e.g., X-ray, CT scan) confirming calcification/ossification within the muscle tissue, along with a history or current diagnosis of paralysis impacting the affected limb.

• Ensure the documentation explicitly states "paralytic" as the cause of the myositis ossificans to differentiate from traumatic or post-surgical etiologies.
• Verify laterality (right lower leg) is clearly documented; separate codes exist for other lower leg locations and bilateral involvement.
• Do not confuse with M61.0- (Myositis ossificans traumatica) or M61.1- (Myositis ossificans progressiva) which have different underlying causes.