Myotonic disorders

Description

Group of inherited muscular disorders associated with clinical and/or electrical myotonia. Myotonia is defined clinically as the occurrence of “delayed relaxation of muscle after voluntary contraction or percussion.”

Exclusions from above levels

http://id.who.int/icd/entity/155258022 – Metabolic disorders
LD26.41 – Arthrogryposis multiplex congenita
05 – Endocrine, nutritional or metabolic diseases

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18 – Complications of pregnancy, childbirth and the puerperium
19 – Certain conditions originating in the perinatal period
22 – Injury, poisoning or certain other consequences of external causes

Child codes

8C71.0 – Myotonic dystrophy
8C71.1 – Chondrodystrophic myotonia
8C71.2 – Myotonia congenita
8C71.3 – Drug-induced myotonia
8C71.4 – Neuromyotonia
8C71.5 – Pseudomyotonia
8C71.Y – Other specified myotonic disorders
8C71.Z – Myotonic disorders, unspecified

Sibling codes

8C70 – Muscular dystrophy
8C72 – Congenital myopathies
8C73 – Mitochondrial myopathies
8C74 – Periodic paralyses or disorders of muscle membrane excitability
8C75 – Distal myopathies
8C76 – Myofibrillar myopathy
8C77 – Ocular myopathy
8C78 – Malignant hyperthermia or hyperpyrexia
8C7Y – Other specified primary disorders of muscles
8C7Z – Primary disorders of muscles, unspecified

Foundation entity

Myotonic disorders – http://id.who.int/icd/entity/839332886

Part of: 08: Diseases of the nervous system