ICD-10 Code H11.043 – Peripheral pterygium, stationary, bilateral (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H11.043 – Peripheral pterygium, stationary, bilateral
What it is
This code identifies a pterygium on both eyes that is peripheral and not currently growing. It describes a conjunctival fibrovascular growth extending toward the cornea, with no documented progression.
Clinical signs
Findings usually include a visible triangular or wing-shaped conjunctival lesion on each eye. Clinical features vary; refer to documentation for whether the lesions are stable, noninflamed, and not encroaching on the visual axis.
When to use this code
Use H11.043 when the record clearly states bilateral peripheral pterygium and indicates it is stationary. This fits ophthalmology notes that document stable lesions without active growth. If laterality or activity is not specified, check documentation before coding.
Do not use for
Do not use this code for unilateral pterygium or for lesions described as growing, inflamed, or otherwise active. It is also not appropriate when the diagnosis is uncertain or another conjunctival disorder is documented.
Coding tip
Confirm both laterality and the “stationary” status in the provider note before assigning H11.043.