ICD-10 Code H00.11 – Chalazion right upper eyelid (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H00.11 – Chalazion right upper eyelid
What it is
H00.11 identifies a chalazion in the right upper eyelid. It is a localized, usually painless eyelid lump caused by blockage and inflammation of a meibomian gland.
Clinical signs
Typical findings include a firm, round nodule in the upper eyelid and mild swelling or tenderness. Clinical features vary; refer to documentation if the side, location, or diagnosis is unclear.
When to use this code
Use H00.11 when the record clearly documents a chalazion limited to the right upper eyelid. This code supports laterality and eyelid specificity, so you should confirm both elements in the note. If documentation only says “chalazion” without laterality, check documentation.
Do not use for
Do not use this code for left or unspecified eyelid chalazion, or for other eyelid lumps with a different diagnosis. Do not code it when the provider documents a stye, unless the chart specifically states chalazion.
Coding tip
Match the exact eyelid and side in the provider note before assigning H00.11.