ICD-10 Code H16.239 – Neurotrophic keratoconjunctivitis, unspecified eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H16.239 – Neurotrophic keratoconjunctivitis, unspecified eye
What it is
This code identifies neurotrophic keratoconjunctivitis affecting an unspecified eye. It is used when the cornea and conjunctiva are damaged because of reduced corneal sensation, but the affected eye is not documented.
Clinical signs
Clinical features vary; refer to documentation. Common findings include decreased corneal sensation, persistent epithelial defects, punctate keratopathy, or recurrent corneal breakdown.
When to use this code
Use H16.239 when the record states neurotrophic keratoconjunctivitis and does not specify right or left eye. It is appropriate for ophthalmology notes describing corneal hypoesthesia with keratoconjunctival involvement. If laterality is documented, code the more specific eye instead.
Do not use for
Do not use this code for ordinary keratitis, dry eye, or conjunctivitis without neurotrophic involvement. If the provider documents a different corneal disorder or laterality, check documentation.
Coding tip
Confirm that the diagnosis explicitly links the condition to neurotrophic keratoconjunctivitis and leaves laterality unspecified before assigning H16.239.