ICD-10 Code H00.019 – Hordeolum externum unspecified eye, unspecified eyelid (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H00.019 – Hordeolum externum unspecified eye, unspecified eyelid
What it is
H00.019 identifies an external stye affecting an eyelid, but the chart does not specify which eye or which eyelid. Use it when documentation confirms a hordeolum externum and laterality or lid detail is not recorded.
Clinical signs
Typical findings include a localized, tender eyelid lump near the lash line, with redness and swelling. Clinical features vary; refer to documentation.
When to use this code
Use this code when the provider documents an external hordeolum but does not identify the right or left eye, upper or lower lid. It also fits situations where the note only says “stye” and no further detail is available. If the record later specifies laterality, code that more specific option instead.
Do not use for
Do not use it for internal hordeolum, chalazion, or nonspecific eyelid inflammation. Check documentation if the note describes a different eyelid lesion or infection.
Coding tip
Code the most specific eyelid and laterality documented; use H00.019 only when those details are missing.