ICD-10 Code H11.053 – Peripheral pterygium, progressive, bilateral (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H11.053 – Peripheral pterygium, progressive, bilateral
What it is
H11.053 identifies a progressive pterygium affecting both eyes. This is a fibrovascular growth of conjunctival tissue that extends toward the cornea and can become more prominent over time.
Clinical signs
Typical findings include a wing-shaped conjunctival lesion on the nasal or temporal side, with visible growth toward the cornea. Clinical features vary; refer to documentation.
When to use this code
Use H11.053 when the record clearly states bilateral peripheral pterygium and describes it as progressive. You should also use it when the provider documents corneal encroachment or enlarging lesions in both eyes, if no more specific code applies.
Do not use for
Do not use this code for stable or stationary pterygium, unilateral disease, or other conjunctival growths. Check documentation if the chart does not specify progression or bilateral involvement.
Coding tip
Confirm both laterality and progression in the assessment before assigning H11.053.