ICD-10 Code H18.452 – Nodular corneal degeneration, left eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H18.452 – Nodular corneal degeneration, left eye
What it is
H18.452 identifies nodular corneal degeneration affecting the left eye. It is a corneal degenerative change that causes localized nodules or opacities in the cornea.
Clinical signs
Findings may include visible corneal nodules, surface irregularity, and reduced clarity of the cornea. Clinical features vary; refer to documentation.
When to use this code
Use this code when the provider documents nodular corneal degeneration in the left eye. It is appropriate for ophthalmology notes, problem lists, and encounters focused on corneal degeneration. Confirm laterality before assigning the code.
Do not use for
Do not use this code for right eye, bilateral, or unspecified corneal degeneration. Do not assign it if the note describes a different corneal disorder; check documentation.
Coding tip
Verify that the record clearly states left eye involvement, because laterality is built into this code.