ICD-10 Code H16.062 – Mycotic corneal ulcer, left eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H16.062 – Mycotic corneal ulcer, left eye
What it is
H16.062 identifies a fungal, or mycotic, ulcer of the cornea in the left eye. Use it when documentation clearly states a corneal ulcer caused by fungal infection.
Clinical signs
Typical findings include corneal pain, redness, photophobia, tearing, and decreased vision. Clinical features vary; refer to documentation for the organism, depth, and laterality.
When to use this code
Use this code when the provider documents a mycotic corneal ulcer specifically in the left eye. It applies to confirmed fungal corneal infection, including cases described as fungal keratitis with ulceration if the left cornea is involved.
Code only the documented laterality and diagnosis. If the record does not clearly identify fungal cause or left eye involvement, check documentation before assigning H16.062.
Do not use for
Do not use this code for corneal ulcers without fungal etiology or for ulcers in the right eye or unspecified eye. Check documentation if the record uses nonspecific keratitis language.
Coding tip
Confirm both the fungal cause and left-eye laterality in the provider note before coding H16.062.