ICD-10 Code H11.133 – Conjunctival pigmentations, bilateral (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H11.133 – Conjunctival pigmentations, bilateral
What it is
H11.133 identifies pigmentary changes in the conjunctiva of both eyes. Use it when documentation states bilateral conjunctival pigmentation without a more specific underlying diagnosis.
Clinical signs
Findings typically include visible brown, black, or other pigmented areas on the conjunctiva in both eyes. Clinical features vary; refer to documentation for laterality, appearance, and whether the pigmentation is stable or changing.
When to use this code
Use this code when the provider documents bilateral conjunctival pigmentation as the diagnosis. It is appropriate when the record describes pigment deposits or discoloration of the conjunctiva and does not identify a different primary condition. If the pigmentation is part of another disorder, code the documented underlying condition instead.
Do not use for
Do not use H11.133 for unilateral conjunctival pigmentation or for corneal, scleral, or eyelid pigmentation. Check documentation if the finding is actually a nevus, tumor, or another specified eye disorder.
Coding tip
Confirm both laterality and the exact anatomic site before assigning H11.133.