ICD-10 Code H11.131 – Conjunctival Pigmentations, Right Eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H11.131 – Conjunctival pigmentations, right eye
What it is
H11.131 identifies pigmentation of the conjunctiva in the right eye. Use it when documentation specifies a pigmented conjunctival lesion or discoloration limited to that eye.
Clinical signs
Findings may include a visible brown, black, or slate-colored conjunctival spot or patch. Clinical features vary; refer to documentation for laterality, size, and whether the lesion is stable or changing.
When to use this code
Use this code when the provider documents conjunctival pigmentation in the right eye and does not describe a different conjunctival disorder. It is appropriate for charted pigment changes, benign-appearing pigmentation, or follow-up of a known conjunctival pigmented finding. Check documentation if the note suggests a mass, nevus, or suspicious lesion instead.
Do not use for
Do not use H11.131 for pigmentation in the left eye or both eyes. Do not use it when the record identifies a different conjunctival diagnosis or the laterality is not documented.
Coding tip
Verify laterality in the ophthalmology note before assigning H11.131.