ICD-10 Code H00.014 – Hordeolum externum left upper eyelid (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H00.014 – Hordeolum externum left upper eyelid
What it is
This code identifies an external hordeolum, or stye, on the left upper eyelid. It is a localized infection of an eyelash follicle or nearby gland at the eyelid margin.
Clinical signs
Typical findings include a tender, red, swollen bump on the left upper lid margin. Clinical features vary; refer to documentation for drainage, crusting, or focal abscess description.
When to use this code
Use H00.014 when the provider documents a stye or external hordeolum specifically on the left upper eyelid. Code it when the note distinguishes the site and laterality clearly. If the record only says “eyelid infection,” check documentation.
Do not use for
Do not use this code for internal hordeolum, chalazion, or nonspecific eyelid swelling. If the lesion is on another eyelid or side, select the documented location instead.
Coding tip
Confirm both laterality and whether the lesion is external before assigning H00.014.