ICD-10 Code H02.66 – Xanthelasma of left eye, unspecified eyelid (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H02.66 – Xanthelasma of left eye, unspecified eyelid
What it is
H02.66 identifies xanthelasma on the left eye when the eyelid is not further specified. It refers to a localized yellowish cholesterol deposit on the eyelid skin, usually a benign finding.
Clinical signs
You may see soft, flat, or slightly raised yellow plaques near the eyelid, often on the medial canthus. Clinical features vary; refer to documentation.
When to use this code
Use this code when the record clearly documents xanthelasma affecting the left eye and does not specify upper or lower eyelid. It is appropriate for outpatient, ophthalmology, or primary care documentation when the lesion is described on the left eyelid. If laterality or eyelid location is more specific, code to that detail instead.
Do not use for
Do not use it for right-sided xanthelasma or for lesions documented on both eyelids. Do not assign it if the note only says eyelid lump, rash, or cholesterol disorder without confirming xanthelasma.
Coding tip
Check whether the provider specified upper, lower, or unspecified eyelid before selecting H02.66.