ICD-10 Code H10.412 – Chronic giant papillary conjunctivitis, left eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H10.412 – Chronic giant papillary conjunctivitis, left eye
What it is
This code identifies chronic giant papillary conjunctivitis affecting the left eye. It refers to a persistent inflammatory conjunctival reaction, often associated with contact lens wear or ocular irritation.
Clinical signs
Typical findings include itching, mucus discharge, redness, and enlarged papillae on the upper tarsal conjunctiva. Clinical features vary; refer to documentation.
When to use this code
Use this code when the provider documents chronic giant papillary conjunctivitis in the left eye specifically. It is appropriate when laterality is stated and the condition is described as chronic, not acute or unspecified. Check documentation if the note only says conjunctivitis or eye irritation.
Do not use for
Do not use this code for conjunctivitis without giant papillary features or without left-eye laterality. Do not assign it when the record supports another conjunctival disorder. Check documentation.
Coding tip
Confirm both the chronic giant papillary diagnosis and left-eye laterality before assigning H10.412.