H16.021 Ring corneal ulcer, right eye

Billable ICD-10-CM code, FY2026.

MS-DRG index

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

Approximate ICD-9-CM (GEMs)

• 370.02 Ring corneal ulcer (approximate)

Code annotations containing back-references to H16.021

Back-references to H16.0

• Type 1 Excludes: H18.4 Corneal degeneration ("Mooren's ulcer (H16.0-)")
• Use Additional: L51 Erythema multiforme ("corneal ulcer (H16.0-)")

Nearby codes

• H16.011 Central corneal ulcer, right eye
• H16.012 Central corneal ulcer, left eye
• H16.013 Central corneal ulcer, bilateral
• H16.019 Central corneal ulcer, unspecified eye
• H16.02 Ring corneal ulcer
• H16.021 Ring corneal ulcer, right eye (this code)
• H16.022 Ring corneal ulcer, left eye
• H16.023 Ring corneal ulcer, bilateral
• H16.029 Ring corneal ulcer, unspecified eye
• H16.03 Corneal ulcer with hypopyon
• H16.031 Corneal ulcer with hypopyon, right eye