ICD-10 Code H16.069 – Mycotic Corneal Ulcer, Unspecified Eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H16.069 – Mycotic corneal ulcer, unspecified eye
What it is
H16.069 identifies a fungal corneal ulcer in an unspecified eye. Use it when documentation states mycotic keratitis or corneal ulcer caused by fungus, but does not specify left or right eye.
Clinical signs
Typical findings include a corneal ulcer with inflammation, pain, redness, tearing, photophobia, and reduced vision. Clinical features vary; refer to documentation.
When to use this code
Use this code when the provider documents a fungal corneal ulcer and the affected eye is not identified. It also fits cases where the record confirms mycotic corneal ulcer but laterality is missing or unclear. Check documentation if the note uses broader terms such as keratitis without confirming ulceration.
Do not use for
Do not use this code for nonfungal corneal ulcers or corneal infections limited to another structure. If the eye is specified as left or right, use the laterality-specific code instead.
Coding tip
Query for laterality whenever possible, because unspecified eye codes are appropriate only when the record truly lacks that detail.