ICD-10 Code H16.429 – Pannus (corneal), unspecified eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H16.429 – Pannus (corneal), unspecified eye
What it is
H16.429 identifies corneal pannus in an unspecified eye. This means abnormal superficial blood vessel growth and tissue over the cornea, but the affected eye is not documented.
Clinical signs
Typical findings include superficial corneal neovascularization, haze, and possible loss of corneal clarity. Clinical features vary; refer to documentation.
When to use this code
Use this code when the provider documents corneal pannus and does not specify right or left eye. It also fits when the record confirms pannus without additional laterality detail. If the note names an underlying cause, check whether that condition should also be coded.
Do not use for
Do not use H16.429 if the chart specifies the right or left eye, because a laterality-specific code is available. Do not apply it to other corneal disorders or general conjunctival vascular changes.
Coding tip
Confirm laterality in the ophthalmology note before assigning the unspecified-eye code.