ICD-10 Code H11.81 – Pseudopterygium of conjunctiva (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H11.81 – Pseudopterygium of conjunctiva
What it is
Pseudopterygium is an adhesion of conjunctival tissue to the cornea that usually follows prior injury or inflammation. Unlike true pterygium, it is not a progressive fibrovascular growth from the limbus.
Clinical signs
You may see a localized conjunctival band attached to the corneal surface, often at the site of previous trauma, surgery, or inflammation. Clinical features vary; refer to documentation.
When to use this code
Use H11.81 when the provider documents pseudopterygium of the conjunctiva or describes a pseudopterygium without using that exact term. Code it for either eye unless laterality is specified elsewhere in the record. If the note only says “conjunctival adhesion,” check documentation.
Do not use for
Do not use this code for true pterygium, conjunctivitis alone, or nonspecific corneal scarring. If the diagnosis is uncertain or another conjunctival disorder is documented, check documentation.
Coding tip
Confirm the provider specifically identifies pseudopterygium, because similar eye findings may be coded differently.