ICD-10-CM > H00-H59 > H15-H22 > H18 > H18.5 > H18.53 H18.53 Granular corneal dystrophy Non-Billable/Non-Specific Codes H18.531Granular corneal dystrophy, right eyeH18.532Granular corneal dystrophy, left eyeH18.533Granular corneal dystrophy, bilateralH18.539Granular corneal dystrophy, unspecified eye