ICD-10 Code H11.13 – Conjunctival Pigmentations (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H11.13 – Conjunctival pigmentations
What it is
H11.13 identifies pigment deposits or discoloration involving the conjunctiva, the thin membrane covering the white of the eye and inner eyelids. Use it when the record documents conjunctival pigmentation without a more specific diagnosis.
Clinical signs
Findings may include visible brown, black, or other pigmented spots on the conjunctiva. Clinical features vary; refer to documentation for laterality, extent, and whether the appearance is benign or associated with another condition.
When to use this code
Use H11.13 when the provider documents conjunctival pigmentation, conjunctival melanosis, or similar wording and does not assign a different underlying diagnosis. It is appropriate for outpatient, consult, or follow-up notes where the pigmentation itself is the documented reason for care. Check documentation if the pigmentation is linked to a systemic disorder, nevus, or other eye lesion.
Do not use for
Do not use this code for pigmentation of the cornea, sclera, eyelid, or skin around the eye. If the chart describes a specific conjunctival lesion or another primary eye disorder, code that condition instead.
Coding tip
Confirm that the provider documented the conjunctiva as the site and that no more specific diagnosis overrides H11.13.