H11.421 Conjunctival edema, right eye

Billable ICD-10-CM code, FY2026.

Applies from H11 Other disorders of conjunctiva

Excludes1 (never code together)

• keratoconjunctivitis (H16.2-)

MS-DRG index

Defines the logic of DRG(s) 124-125 in MDC 02.

Approximate ICD-9-CM (GEMs)

• 372.73 Conjunctival edema (approximate)

Code annotations containing back-references to H11.421

Back-references to H11.42

• Use Additional: L51 Erythema multiforme ("conjunctival edema (H11.42)")

Nearby codes

• H11.411 Vascular abnormalities of conjunctiva, right eye
• H11.412 Vascular abnormalities of conjunctiva, left eye
• H11.413 Vascular abnormalities of conjunctiva, bilateral
• H11.419 Vascular abnormalities of conjunctiva, unspecified eye
• H11.42 Conjunctival edema
• H11.421 Conjunctival edema, right eye (this code)
• H11.422 Conjunctival edema, left eye
• H11.423 Conjunctival edema, bilateral
• H11.429 Conjunctival edema, unspecified eye
• H11.43 Conjunctival hyperemia
• H11.431 Conjunctival hyperemia, right eye