MB47.9

ICD-11 MMS 2026-01

Myotonia

Description

Slow relaxation of the muscles after voluntary contraction

Index terms

Myotonia

Exclusions from above levels

19 – Certain conditions originating in the perinatal period
JA66 – Clinical findings on antenatal screening of mother

Sibling codes

MB47.0 – Abnormal reflex
MB47.1 – Abnormal posture
MB47.2 – Clonus
MB47.3 – Cramp or spasm
MB47.4 – Dystonia
MB47.5 – Fasciculation
MB47.6 – Meningismus
MB47.7 – Muscle fibrillation
MB47.8 – Muscular hypertonia
MB47.A – Ophthalmoparesis
MB47.B – Opisthotonos
MB47.C – Tendency to fall
MB47.D – Tetany
MB47.Y – Other specified abnormality of tonus or reflex
MB47.Z – Abnormality of tonus or reflex, unspecified

Foundation entity

Myotonia – http://id.who.int/icd/entity/1082840130

Part of: MB47: Abnormality of tonus or reflex › 21: Symptoms, signs or clinical findings, not elsewhere classified