ICD-10-CM > H00-H59 > H15-H22 > H18 > H18.5 > H18.55 H18.55 Macular corneal dystrophy Non-Billable/Non-Specific Codes H18.551Macular corneal dystrophy, right eyeH18.552Macular corneal dystrophy, left eyeH18.553Macular corneal dystrophy, bilateralH18.559Macular corneal dystrophy, unspecified eye