ICD-10-CM > H00-H59 > H15-H22 > H16 > H16.0 > H16.04 H16.04 Marginal corneal ulcer Non-Billable/Non-Specific Codes H16.041Marginal corneal ulcer, right eyeH16.042Marginal corneal ulcer, left eyeH16.043Marginal corneal ulcer, bilateralH16.049Marginal corneal ulcer, unspecified eye