ICD-10-CM > H00-H59 > H15-H22 > H16 > H16.4 > H16.42 H16.42 Pannus (corneal) Non-Billable/Non-Specific Codes H16.421Pannus (corneal), right eyeH16.422Pannus (corneal), left eyeH16.423Pannus (corneal), bilateralH16.429Pannus (corneal), unspecified eye