H18.22 Idiopathic corneal edemaNon-billable header with 4 child codes.
H18.221 Idiopathic corneal edema, right eyeH18.222 Idiopathic corneal edema, left eyeH18.223 Idiopathic corneal edema, bilateralH18.229 Idiopathic corneal edema, unspecified eyeH18.21 Corneal edema secondary to contact lensH18.211 Corneal edema secondary to contact lens, right eyeH18.212 Corneal edema secondary to contact lens, left eyeH18.213 Corneal edema secondary to contact lens, bilateralH18.219 Corneal edema secondary to contact lens, unspecified eyeH18.22 Idiopathic corneal edema (this code)H18.221 Idiopathic corneal edema, right eyeH18.222 Idiopathic corneal edema, left eyeH18.223 Idiopathic corneal edema, bilateralH18.229 Idiopathic corneal edema, unspecified eyeH18.23 Secondary corneal edema