ICD-10-CM > H00-H59 > H15-H22 > H18 > H18.7 > H18.71 H18.71 Corneal ectasia Non-Billable/Non-Specific Codes H18.711Corneal ectasia, right eyeH18.712Corneal ectasia, left eyeH18.713Corneal ectasia, bilateralH18.719Corneal ectasia, unspecified eye