ICD-11 classes
09 Diseases of the visual system
Strabismus or ocular motility disorders
Diseases of neuromuscular junction or muscle
Primary disorders of muscles

ICD-11 Primary disorders of muscles

Disorders in which the primary symptom of muscle weakness is secondary to a specific dysfunction of a muscle fiber.

The diagnosis includes nothing.

Diagnosis contains 13 clarifying diagnoses:

1. 8C70 — Muscular dystrophy
   It contains 10 clarifying diagnoses.
2. 8C71 — Myotonic disorders
   It contains 8 clarifying diagnoses.
3. 8C72 — Congenital myopathies
   It contains 4 clarifying diagnoses.
4. 8C73 — Mitochondrial myopathies
   It contains 6 clarifying diagnoses.
5. 8C74 — Periodic paralyses or disorders of muscle membrane excitability
   It contains 4 clarifying diagnoses.
6. 8C75 — Distal myopathies
7. 8C76 — Myofibrillar myopathy
8. 8C77 — Ocular myopathy
9. 8C78 — Malignant hyperthermia or hyperpyrexia
10. FB32.20 — Idiopathic rhabdomyolysis
11. 4A41 — Idiopathic inflammatory myopathy
    It contains 5 clarifying diagnoses.
12. 8C7Y — Other specified primary disorders of muscles
13. 8C7Z — Primary disorders of muscles, unspecified

The diagnosis is coded elsewhere:

• Diseases of neuromuscular junction or muscle #7434
• Primary disorders of muscles #7449