ICD-10-CM > H00-H59 > H15-H22 > H18 > H18.6 > H18.61 H18.61 Keratoconus, stable Non-Billable/Non-Specific Codes H18.611Keratoconus, stable, right eyeH18.612Keratoconus, stable, left eyeH18.613Keratoconus, stable, bilateralH18.619Keratoconus, stable, unspecified eye