M33.12
ICD-10-CMThis code represents a form of inflammatory myopathy affecting the skin and muscles, specifically when the muscle involvement is a prominent feature. It signifies a systemic autoimmune disease characterized by a distinctive skin rash often accompanied by muscle weakness and inflammation.
Use this code for patients diagnosed with dermatomyositis where muscle weakness and inflammation (myopathy) are explicitly documented, and the condition is not classified as juvenile or amyopathic. Documentation should clearly indicate the presence of both dermatological and muscular manifestations.
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