ICD-11 classes
08 Diseases of the nervous system
Diseases of neuromuscular junction or muscle
Primary disorders of muscles
8C74 — Periodic paralyses or disorders of muscle membrane...

ICD-11 8C74 — Periodic paralyses or disorders of muscle membrane excitability

These are group of disorders caused by malfunctioning of the ion channels in skeletal muscle membranes causing the cells to depolarize leading to weakness or paralysis. The common triggers include cold, heat, high carbohydrate meals, stress, excitement, physical exertion etc..

The diagnosis includes nothing.

The diagnosis excludes nothing.

Diagnosis with code 8C74 contains 4 clarifying diagnoses:

1. 8C74.0 — Paramyotonia congenita
2. 8C74.1 — Periodic paralysis
   It contains 4 clarifying diagnoses.
3. 8C74.Y — Other specified periodic paralyses or disorders of muscle membrane excitability
4. 8C74.Z — Periodic paralyses or disorders of muscle membrane excitability, unspecified

The diagnosis is coded elsewhere:

• Primary disorders of muscles #10017
• Periodic paralyses or disorders of muscle membrane excitability #10059