ICD-10 Code H11.811 – Pseudopterygium of conjunctiva, right eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H11.811 – Pseudopterygium of conjunctiva, right eye
What it is
H11.811 identifies pseudopterygium affecting the conjunctiva of the right eye. It describes an adhesion-like conjunctival fold that mimics pterygium but is not the same condition.
Clinical signs
Clinical features vary; refer to documentation. You may see a localized conjunctival membrane or fold attached to the eye surface, often noted on exam as pseudopterygium rather than true pterygium.
When to use this code
Use this code when the provider documents pseudopterygium of the conjunctiva in the right eye. It is appropriate when the record clearly identifies the laterality and distinguishes the lesion from pterygium or another conjunctival disorder.
If the note only says conjunctival growth or eye irritation, check documentation before coding. Code the documented diagnosis, not a presumed condition.
Do not use for
Do not use H11.811 for pterygium, unspecified conjunctival lesions, or left-eye disease. If the diagnosis is not specifically pseudopterygium of the right conjunctiva, check documentation.
Coding tip
Verify both the exact term “pseudopterygium” and the right-eye laterality before assigning H11.811.