G71.1 Myotonic disorders

Non-billable header with 5 child codes.

Applies from G71 Primary disorders of muscles

Excludes2 (not included here)

• arthrogryposis multiplex congenita (Q74.3)
• metabolic disorders (E70-E88)
• myositis (M60.-)

Codes under G71.1

• G71.11 Myotonic muscular dystrophy
• G71.12 Myotonia congenita
• G71.13 Myotonic chondrodystrophy
• G71.14 Drug induced myotonia
• G71.19 Other specified myotonic disorders

Code annotations containing back-references to G71.1

Back-references to G71.1

• Code First: H28 Cataract in diseases classified elsewhere ("myotonia (G71.1-)")

Back-references to G71

• Code First: M62.84 Sarcopenia ("primary disorders of muscles (G71.-)")

Nearby codes

• G71.035 Limb girdle muscular dystrophy due to anoctamin-5 dysfunction
• G71.036 Limb girdle muscular dystrophy due to fukutin related protein dysfunction
• G71.038 Other limb girdle muscular dystrophy
• G71.039 Limb girdle muscular dystrophy, unspecified
• G71.09 Other specified muscular dystrophies
• G71.1 Myotonic disorders (this code)
• G71.11 Myotonic muscular dystrophy
• G71.12 Myotonia congenita
• G71.13 Myotonic chondrodystrophy
• G71.14 Drug induced myotonia
• G71.19 Other specified myotonic disorders