ICD-10 Code H11.051 – Peripheral pterygium, progressive, right eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H11.051 – Peripheral pterygium, progressive, right eye
What it is
This code identifies a progressive peripheral pterygium in the right eye. It is a wing-shaped fibrovascular growth of conjunctival tissue that extends toward the cornea.
Clinical signs
Typical findings include a visible fleshy conjunctival growth near the limbus with gradual corneal encroachment. Clinical features vary; refer to documentation.
When to use this code
Use H11.051 when the record clearly states a progressive peripheral pterygium affecting the right eye. Code it when the provider documents extension toward the cornea or ongoing growth, not a nonspecific conjunctival lesion.
If laterality is specified as right eye, this code is the correct choice. Check documentation when the note only says pterygium without progression or eye side.
Do not use for
Do not use this code for pterygium of the left eye, bilateral disease, or unspecified laterality. Do not use it for other conjunctival growths or scars unless documentation confirms pterygium.
Coding tip
Verify both laterality and the word “progressive” in the provider note before assigning H11.051.