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4A41.00 Adult dermatomyositis

International Classification of Diseases for Mortality and Morbidity Statistics, 11th Revision, v2024-01

Adult dermatomyositis is a systemic inflammatory disorder affecting the skeletal muscles, the skin, and other organs. It is characterised by symmetric proximal muscle weakness, increased serum muscle enzymes, myopathic changes upon electromyography, typical histological findings on muscle biopsy, and typical dermatologic manifestations such as heliotrope rash or Gottron’s papules.

exclusions

• Myasthenia gravis or certain specified neuromuscular junction disorders  (8C60-8C6Z)

synonyms

• Adult dermatomyositis
• Amyopathic dermatomyositis
• Hypomyopathic dermatomyositis
• Adult dermatomyositis with calcinosis
• Paraneoplastic dermatomyositis
• Dermatomyositis in neoplastic disease of uncertain behaviour
• Dermatomyositis in neoplastic disease of unknown behaviour
• Dermatopolymyositis in neoplastic disease of uncertain behaviour
• Dermatopolymyositis in neoplastic disease of unknown behaviour
• Anti-synthetase syndrome with dermatomyositis
• Adult dermatomyositis with overlap to nonorgan specific systemic autoimmune disorders
• Wagner-Unverricht syndrome

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