H05.821 Myopathy of extraocular muscles, right orbit

Billable ICD-10-CM code, FY2026.

Applies from H05 Disorders of orbit

Excludes1 (never code together)

• congenital malformation of orbit (Q10.7)

MS-DRG index

Defines the logic of DRG(s) 123 in MDC 02.

Approximate ICD-9-CM (GEMs)

• 376.82 Myopathy of extraocular muscles (approximate)

Nearby codes

• H05.811 Cyst of right orbit
• H05.812 Cyst of left orbit
• H05.813 Cyst of bilateral orbits
• H05.819 Cyst of unspecified orbit
• H05.82 Myopathy of extraocular muscles
• H05.821 Myopathy of extraocular muscles, right orbit (this code)
• H05.822 Myopathy of extraocular muscles, left orbit
• H05.823 Myopathy of extraocular muscles, bilateral
• H05.829 Myopathy of extraocular muscles, unspecified orbit
• H05.83 Thyroid orbitopathy
• H05.831 Thyroid orbitopathy, right orbit