ICD-10 Code H11.433 – Conjunctival hyperemia, bilateral (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H11.433 – Conjunctival hyperemia, bilateral
What it is
H11.433 identifies redness of both conjunctivae, the thin membranes covering the whites of the eyes and inner eyelids. Use it when documentation states bilateral conjunctival hyperemia or bilateral conjunctival redness.
Clinical signs
Typical findings include visible redness of both eyes from conjunctival vessel dilation. Clinical features vary; refer to documentation for the underlying cause, associated irritation, discharge, or discomfort.
When to use this code
Use this code when the provider documents bilateral conjunctival hyperemia as the diagnosis or a confirmed finding. It is appropriate when both eyes are red and the record does not specify a more definitive disorder.
If the note identifies a separate cause, such as conjunctivitis or allergic disease, code the documented condition instead. You should also confirm laterality, because this code is specific to both eyes.
Do not use for
Do not assign this code for unilateral conjunctival redness or for nonspecific eye redness without bilateral documentation. Check documentation if the redness is part of another diagnosed eye condition.
Coding tip
Verify that the chart explicitly says “bilateral” before selecting H11.433, and code the underlying condition when one is documented.