ICD-10-CM > H00-H59 > H15-H22 > H16 > H16.2 > H16.25 H16.25 Phlyctenular keratoconjunctivitis Non-Billable/Non-Specific Codes H16.251Phlyctenular keratoconjunctivitis, right eyeH16.252Phlyctenular keratoconjunctivitis, left eyeH16.253Phlyctenular keratoconjunctivitis, bilateralH16.259Phlyctenular keratoconjunctivitis, unspecified eye