ICD-10 Code H11.05 – Peripheral pterygium of eye, progressive (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H11.05 – Peripheral pterygium of eye, progressive
What it is
H11.05 identifies a progressive peripheral pterygium, a fibrovascular growth on the conjunctiva that advances toward the cornea. Use it when the record specifically documents peripheral pterygium with progression.
Clinical signs
Typical findings include a visible conjunctival growth extending toward the corneal edge, often with irritation or redness. Clinical features vary; refer to documentation.
When to use this code
Use this code when the provider documents a peripheral pterygium that is progressive, enlarging, or advancing. It may be supported by an eye exam describing extension toward the cornea. If laterality or a different pterygium type is specified, code the documented condition.
Do not use for
Do not use this code for a stable, nonprogressive pterygium or for other conjunctival lesions. Check documentation if the note describes pinguecula, corneal opacity, or an unspecified eye growth.
Coding tip
Confirm that “progressive” is documented; otherwise, do not assume this code.