H18.221 Idiopathic corneal edema, 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)

• 371.21 Idiopathic corneal edema (approximate)

Nearby codes

• H18.211 Corneal edema secondary to contact lens, right eye
• H18.212 Corneal edema secondary to contact lens, left eye
• H18.213 Corneal edema secondary to contact lens, bilateral
• H18.219 Corneal edema secondary to contact lens, unspecified eye
• H18.22 Idiopathic corneal edema
• H18.221 Idiopathic corneal edema, right eye (this code)
• H18.222 Idiopathic corneal edema, left eye
• H18.223 Idiopathic corneal edema, bilateral
• H18.229 Idiopathic corneal edema, unspecified eye
• H18.23 Secondary corneal edema
• H18.231 Secondary corneal edema, right eye