ICD-10 Code H11.012 – Amyloid pterygium of left eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H11.012 – Amyloid pterygium of left eye
What it is
This code identifies an amyloid pterygium affecting the left eye. It refers to a localized conjunctival growth associated with amyloid deposition.
Clinical signs
Findings typically include a visible conjunctival lesion on the left eye, often with a pterygium-like appearance. Clinical features vary; refer to documentation.
When to use this code
Use H11.012 when the provider documents amyloid pterygium specifically in the left eye. It is appropriate for outpatient, specialist, or problem-list documentation when the diagnosis is confirmed or clearly stated. If the record only says pterygium without amyloid detail, check documentation.
Do not use for
Do not use this code for right-eye or bilateral pterygium, or for nonspecific conjunctival lesions. If amyloid involvement is not documented, choose the more accurate documented diagnosis.
Coding tip
Verify laterality and the word “amyloid” in the ophthalmology note before assigning H11.012.