ICD-10 Code H10.523 – Angular blepharoconjunctivitis, bilateral (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H10.523 – Angular blepharoconjunctivitis, bilateral
What it is
This code identifies inflammation affecting both the eyelid corners and the adjacent conjunctiva. Use it when documentation states angular blepharoconjunctivitis is present in both eyes.
Clinical signs
Typical findings include redness, irritation, and crusting or scaling at the inner or outer canthi. Clinical features vary; refer to documentation.
When to use this code
Assign H10.523 when the provider documents bilateral angular blepharoconjunctivitis, or clearly describes inflammation at both eye corners with conjunctival involvement. Use the bilateral code only when both eyes are specifically involved. If laterality is unclear, check documentation before coding.
Do not use for
Do not use this code for unilateral disease or for nonspecific conjunctivitis without eyelid-corner involvement. Check documentation if the note describes blepharitis, conjunctivitis, or eye irritation without confirming the angular pattern.
Coding tip
Confirm both laterality and the “angular” descriptor in the record before assigning H10.523.