H05.00 Unspecified acute inflammation of 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) 124-125 in MDC 02.

Approximate ICD-9-CM (GEMs)

• 376.00 Acute inflammation of orbit, unspecified

Code annotations containing back-references to H05.00

Back-references to H05.0

• Type 2 Excludes: L02.0 Cutaneous abscess, furuncle and carbuncle of face ("abscess of orbit (H05.0)")
• Type 2 Excludes: M86 Osteomyelitis ("orbit (H05.0-)")

Diagnosis Index entries for H05.00

• Inflammation, inflamed, inflammatory (with exudation) › orbit (chronic) › acute

Nearby codes

• H05 Disorders of orbit
• H05.0 Acute inflammation of orbit
• H05.00 Unspecified acute inflammation of orbit (this code)
• H05.01 Cellulitis of orbit
• H05.011 Cellulitis of right orbit
• H05.012 Cellulitis of left orbit
• H05.013 Cellulitis of bilateral orbits
• H05.019 Cellulitis of unspecified orbit