ICD-10 Code H11.022 – Central pterygium of left eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H11.022 – Central pterygium of left eye
What it is
H11.022 identifies a central pterygium in the left eye. This is a benign conjunctival growth that extends onto the cornea and can affect vision if it progresses.
Clinical signs
Typical findings include a triangular fibrovascular lesion crossing the limbus toward the cornea. Patients may have redness, irritation, foreign-body sensation, or blurred vision; clinical features vary, refer to documentation.
When to use this code
Use this code when the provider documents a central pterygium specifically in the left eye. Apply it for confirmed diagnosis in outpatient, specialist, or problem-list documentation. If laterality or location is unclear, check documentation before coding.
Do not use for
Do not use this code for pterygium in the right eye, bilateral disease, or unspecified eye. Do not use it for pinguecula or other conjunctival growths unless the record clearly states pterygium.
Coding tip
Always verify both laterality and the “central” location in the provider note before assigning H11.022.