ICD-10-CM > H00-H59 > H10-H11 > H10 > H10.4 > H10.42 H10.42 Simple chronic conjunctivitis Non-Billable/Non-Specific Codes H10.421Simple chronic conjunctivitis, right eyeH10.422Simple chronic conjunctivitis, left eyeH10.423Simple chronic conjunctivitis, bilateralH10.429Simple chronic conjunctivitis, unspecified eye