ICD-10-CM > H00-H59 > H15-H22 > H18 > H18.2 H18.2 Other and unspecified corneal edema Non-Billable/Non-Specific Codes H18.20Unspecified corneal edemaH18.21Corneal edema secondary to contact lensH18.211Corneal edema secondary to contact lens, right eyeH18.212Corneal edema secondary to contact lens, left eyeH18.213Corneal edema secondary to contact lens, bilateralH18.219Corneal edema secondary to contact lens, unspecified eyeH18.22Idiopathic corneal edemaH18.221Idiopathic corneal edema, right eyeH18.222Idiopathic corneal edema, left eyeH18.223Idiopathic corneal edema, bilateralH18.229Idiopathic corneal edema, unspecified eyeH18.23Secondary corneal edemaH18.231Secondary corneal edema, right eyeH18.232Secondary corneal edema, left eyeH18.233Secondary corneal edema, bilateralH18.239Secondary corneal edema, unspecified eye