H10.421 Simple chronic conjunctivitis, right eye

Billable ICD-10-CM code, FY2026.

Applies from H10 Conjunctivitis

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)

• 372.11 Simple chronic conjunctivitis (approximate)

Nearby codes

• H10.411 Chronic giant papillary conjunctivitis, right eye
• H10.412 Chronic giant papillary conjunctivitis, left eye
• H10.413 Chronic giant papillary conjunctivitis, bilateral
• H10.419 Chronic giant papillary conjunctivitis, unspecified eye
• H10.42 Simple chronic conjunctivitis
• H10.421 Simple chronic conjunctivitis, right eye (this code)
• H10.422 Simple chronic conjunctivitis, left eye
• H10.423 Simple chronic conjunctivitis, bilateral
• H10.429 Simple chronic conjunctivitis, unspecified eye
• H10.43 Chronic follicular conjunctivitis
• H10.431 Chronic follicular conjunctivitis, right eye