ICD-10 Code H18.443 – Keratomalacia, bilateral (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H18.443 – Keratomalacia, bilateral
What it is
Keratomalacia is softening and breakdown of the cornea in both eyes. This code identifies the bilateral form, so you should use it when documentation clearly states keratomalacia affecting both corneas.
Clinical signs
Clinical features vary; refer to documentation. Standard descriptions include corneal clouding, ulceration, softening, or loss of corneal integrity, often with severe visual impairment.
When to use this code
Use H18.443 when the provider documents keratomalacia in both eyes, or when the diagnosis is recorded as bilateral corneal softening. It may also fit when the note specifies bilateral corneal breakdown and no more specific cause or laterality code is documented. Check documentation if the record only mentions corneal disease without the term keratomalacia.
Do not use for
Do not use this code for unilateral keratomalacia, other corneal ulcers, or nonspecific keratitis. If the chart does not clearly support bilateral involvement, check documentation.
Coding tip
Confirm both the diagnosis and laterality in the provider note before assigning H18.443.