M62.831 Muscle spasm of calf

Billable ICD-10-CM code, FY2026.

Applicable to

• Charley-horse

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 M62.8 Other specified disorders of muscle

Excludes2 (not included here)

• nontraumatic hematoma of muscle (M79.81)

MS-DRG index

Defines the logic of DRG(s) 555-556 in MDC 08.

Approximate ICD-9-CM (GEMs)

• 728.85 Spasm of muscle (approximate)

Code annotations containing back-references to M62.831

Back-references to M62.831

• Type 2 Excludes: R25.2 Cramp and spasm ("charley-horse (M62.831)")
• Type 2 Excludes: R25.2 Cramp and spasm ("muscle spasm of calf (M62.831)")

Diagnosis Index entries for M62.831

• Charley-horse (quadriceps)

Nearby codes

• M62.8 Other specified disorders of muscle
• M62.81 Muscle weakness (generalized)
• M62.82 Rhabdomyolysis
• M62.83 Muscle spasm
• M62.830 Muscle spasm of back
• M62.831 Muscle spasm of calf (this code)
• M62.838 Other muscle spasm
• M62.84 Sarcopenia
• M62.85 Dysfunction of the multifidus muscles, lumbar region
• M62.89 Other specified disorders of muscle
• M62.9 Disorder of muscle, unspecified