H16.042 Marginal corneal ulcer, left 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)

• 370.01 Marginal corneal ulcer (approximate)

Code annotations containing back-references to H16.042

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

• H16.032 Corneal ulcer with hypopyon, left eye
• H16.033 Corneal ulcer with hypopyon, bilateral
• H16.039 Corneal ulcer with hypopyon, unspecified eye
• H16.04 Marginal corneal ulcer
• H16.041 Marginal corneal ulcer, right eye
• H16.042 Marginal corneal ulcer, left eye (this code)
• H16.043 Marginal corneal ulcer, bilateral
• H16.049 Marginal corneal ulcer, unspecified eye
• H16.05 Mooren's corneal ulcer
• H16.051 Mooren's corneal ulcer, right eye
• H16.052 Mooren's corneal ulcer, left eye