ICD-10 Code H11.011 – Amyloid pterygium of right eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H11.011 – Amyloid pterygium of right eye
What it is
This code identifies amyloid pterygium affecting the right eye. It describes a localized conjunctival growth with amyloid deposition, documented specifically on the right side.
Clinical signs
Clinical features vary; refer to documentation. You may see a conjunctival lesion or wing-shaped growth noted on eye exam, with pathology or specialist documentation supporting amyloid involvement.
When to use this code
Use H11.011 when the provider documents amyloid pterygium of the right eye as the diagnosis. Code it for a confirmed right-sided lesion, including ophthalmology notes or pathology reports that specify amyloid pterygium.
Apply this code only when the record clearly identifies the right eye. If the note says pterygium without amyloid, or laterality is not documented, check documentation before assigning H11.011.
Do not use for
Do not use this code for ordinary pterygium, pinguecula, or other conjunctival masses without amyloid. If the eye side is not stated or the diagnosis is uncertain, check documentation.
Coding tip
Confirm both amyloid involvement and right-eye laterality in the final provider documentation before coding.