ICD-10-CM > H00-H59 > H15-H22 > H16 > H16.2 > H16.23 H16.23 Neurotrophic keratoconjunctivitis Non-Billable/Non-Specific Codes H16.231Neurotrophic keratoconjunctivitis, right eyeH16.232Neurotrophic keratoconjunctivitis, left eyeH16.233Neurotrophic keratoconjunctivitis, bilateralH16.239Neurotrophic keratoconjunctivitis, unspecified eye