ICD-10 Code H18.811 – Anesthesia and hypoesthesia of cornea, right eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H18.811 – Anesthesia and hypoesthesia of cornea, right eye
What it is
H18.811 identifies reduced or absent corneal sensation in the right eye. It means the cornea is less responsive to touch, which can affect protective blinking and tear-related reflexes.
Clinical signs
Findings may include diminished corneal sensitivity on exam, reduced blink response, and symptoms that can be mild or absent. Clinical features vary; refer to documentation.
When to use this code
Use this code when the provider documents anesthesia or hypoesthesia of the cornea limited to the right eye. It fits cases where decreased corneal sensation is the recorded diagnosis, not merely eye pain or irritation.
If the note links the finding to a specific underlying disorder, code that condition as well when documented. Check documentation for laterality and whether the problem is congenital, postoperative, or secondary.
Do not use for
Do not use H18.811 for general corneal disease without decreased sensation, or for left eye or bilateral involvement. Do not assign it when the chart only says “eye numbness” without corneal involvement.
Coding tip
Verify laterality carefully and look for the exact phrase “corneal anesthesia” or “hypoesthesia” before assigning H18.811.