G71.9 Primary disorder of muscle, unspecified

Billable ICD-10-CM code, FY2026.

Applicable to

• Hereditary myopathy NOS

Applies from G71 Primary disorders of muscles

Excludes2 (not included here)

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

MS-DRG index

Defines the logic of DRG(s) 091-093 in MDC 01.

Approximate ICD-9-CM (GEMs)

• 359.9 Myopathy, unspecified (approximate)

Code annotations containing back-references to G71.9

Back-references to G71

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

Diagnosis Index entries for G71.9

• Disorder (of) › neuromuscular › hereditary NEC
• Myopathy › hereditary
• Myopathy › primary

Nearby codes

• G71.220 X-linked myotubular myopathy
• G71.228 Other centronuclear myopathy
• G71.29 Other congenital myopathy
• G71.3 Mitochondrial myopathy, not elsewhere classified
• G71.8 Other primary disorders of muscles
• G71.9 Primary disorder of muscle, unspecified (this code)