ICD-10 Code H11.013 – Amyloid pterygium of eye, bilateral (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H11.013 – Amyloid pterygium of eye, bilateral
What it is
This code identifies bilateral pterygium of the conjunctiva with amyloid involvement, affecting both eyes. It is used when the chart specifically documents amyloid pterygium rather than a routine pterygium.
Clinical signs
Typical findings include a fibrovascular conjunctival growth extending toward the cornea, with bilateral involvement noted in the record. Clinical features vary; refer to documentation.
When to use this code
Use H11.013 when the provider documents amyloid pterygium in both eyes, including ophthalmology assessments or operative notes. Code it only when the bilateral nature is clear in the documentation. If the record says pterygium without amyloid or laterality, check documentation.
Do not use for
Do not use this code for unilateral pterygium, unspecified pterygium, or other conjunctival growths without amyloid involvement. If the diagnosis is unclear, check documentation.
Coding tip
Confirm both the amyloid qualifier and bilateral laterality before assigning H11.013.