ICD-10 Code H11.042 – Peripheral pterygium, stationary, left eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H11.042 – Peripheral pterygium, stationary, left eye
What it is
This code identifies a peripheral pterygium in the left eye that is stationary, meaning it is not actively progressing. It describes a benign conjunctival growth extending toward the cornea.
Clinical signs
Typical findings include a visible triangular fibrovascular tissue on the conjunctiva near the cornea. Clinical features vary; refer to documentation for whether the lesion is stable and limited to the left eye.
When to use this code
Use H11.042 when the record clearly states a stationary peripheral pterygium of the left eye. It is appropriate when the provider documents the lesion as stable, nonprogressive, or unchanged on follow-up. Check documentation if the note does not specify laterality or activity.
Do not use for
Do not use this code for pterygium in the right eye, bilateral disease, or an actively advancing lesion. Also avoid it when the diagnosis is only suspected or when the documentation is nonspecific.
Coding tip
Confirm both laterality and that the pterygium is stationary before assigning H11.042.