ICD-10 Code H10.529 – Angular blepharoconjunctivitis, unspecified eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H10.529 – Angular blepharoconjunctivitis, unspecified eye
What it is
H10.529 identifies angular blepharoconjunctivitis affecting an unspecified eye. Use it when the record shows inflammation at the eyelid margin and conjunctiva near the eye’s angle, but laterality is not documented.
Clinical signs
Clinical features vary; refer to documentation. Commonly noted findings include redness, irritation, crusting, or discharge at the inner or outer canthus, with lid margin inflammation and conjunctival involvement.
When to use this code
Use this code when the provider documents angular blepharoconjunctivitis and does not specify right or left eye. It also fits follow-up notes that restate the condition without laterality. If the chart names a different conjunctivitis type, code that diagnosis instead.
Do not use for
Do not use this code for blepharitis alone, conjunctivitis without eyelid involvement, or cases with documented right or left eye when a laterality-specific code is available. Check documentation.
Coding tip
Verify the exact eye and the combined eyelid-plus-conjunctiva diagnosis before assigning H10.529.