H18.71Non-Billable (Header)Corneal ectasiaChild CodesH18.711Corneal ectasia, right eyeH18.712Corneal ectasia, left eyeH18.713Corneal ectasia, bilateralH18.719Corneal ectasia, unspecified eyeCode Hierarchy└H18Other disorders of cornea└H18.7Other and unspecified corneal deformities└H18.71Corneal ectasia└H18.71Corneal ectasia