M62.50 Muscle wasting and atrophy, not elsewhere classified, unspecified site

Billable ICD-10-CM code, FY2026.

Applies from M62 Other disorders of muscle

Excludes1 (never code together)

• alcoholic myopathy (G72.1)
• cramp and spasm (R25.2)
• drug-induced myopathy (G72.0)
• myalgia (M79.1-)
• stiff-man syndrome (G25.82)

Excludes2 (not included here)

• nontraumatic hematoma of muscle (M79.81)

Applies from M62.5 Muscle wasting and atrophy, not elsewhere classified

Applicable to

• Disuse atrophy NEC

Excludes1 (never code together)

• neuralgic amyotrophy (G54.5)
• progressive muscular atrophy (G12.21)
• sarcopenia (M62.84)

Excludes2 (not included here)

• pelvic muscle wasting (N81.84)

MS-DRG index

Defines the logic of DRG(s) 557-558 in MDC 08.

Approximate ICD-9-CM (GEMs)

• 728.2 Muscular wasting and disuse atrophy, not elsewhere classified (approximate)

Diagnosis Index entries for M62.50

• Atrophy, atrophic (of) › muscle, muscular (diffuse) (general) (idiopathic) (primary)

Nearby codes

• M62.472 Contracture of muscle, left ankle and foot
• M62.479 Contracture of muscle, unspecified ankle and foot
• M62.48 Contracture of muscle, other site
• M62.49 Contracture of muscle, multiple sites
• M62.5 Muscle wasting and atrophy, not elsewhere classified
• M62.50 Muscle wasting and atrophy, not elsewhere classified, unspecified site (this code)
• M62.51 Muscle wasting and atrophy, not elsewhere classified, shoulder
• M62.511 Muscle wasting and atrophy, not elsewhere classified, right shoulder
• M62.512 Muscle wasting and atrophy, not elsewhere classified, left shoulder
• M62.519 Muscle wasting and atrophy, not elsewhere classified, unspecified shoulder
• M62.52 Muscle wasting and atrophy, not elsewhere classified, upper arm