ICD-10 Code H11.01 – Amyloid pterygium (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H11.01 – Amyloid pterygium
What it is
Amyloid pterygium is a localized conjunctival lesion in which amyloid deposits form a pterygium-like growth. Use this code when the record specifically documents amyloid pterygium.
Clinical signs
Clinical features vary; refer to documentation. Reports may describe a visible conjunctival mass or plaque with a pterygium-like appearance, but the diagnosis should be confirmed by the provider.
When to use this code
Use H11.01 when the clinician documents amyloid pterygium as the diagnosis, including ophthalmology notes, pathology reports, or problem lists. It is appropriate when the condition is the reason for evaluation or is clearly documented as an established finding. Check documentation if the lesion is described only as a generic conjunctival growth.
Do not use for
Do not use this code for ordinary pterygium, pinguecula, or other conjunctival lesions without amyloid. If the note is nonspecific, check documentation before assigning H11.01.
Coding tip
Code the exact documented lesion name; if amyloid is not stated, do not assume this diagnosis.