H18.712 Corneal ectasia, left eye

Billable ICD-10-CM code, FY2026.

Applies from H18.7 Other and unspecified corneal deformities

Excludes1 (never code together)

• congenital malformations of cornea (Q13.3-Q13.4)

MS-DRG index

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

Approximate ICD-9-CM (GEMs)

• 371.71 Corneal ectasia (approximate)

Nearby codes

• H18.629 Keratoconus, unstable, unspecified eye
• H18.7 Other and unspecified corneal deformities
• H18.70 Unspecified corneal deformity
• H18.71 Corneal ectasia
• H18.711 Corneal ectasia, right eye
• H18.712 Corneal ectasia, left eye (this code)
• H18.713 Corneal ectasia, bilateral
• H18.719 Corneal ectasia, unspecified eye
• H18.72 Corneal staphyloma
• H18.721 Corneal staphyloma, right eye
• H18.722 Corneal staphyloma, left eye