ICD-10 Code H00.036 – Abscess of eyelid left eye, unspecified eyelid (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H00.036 – Abscess of eyelid left eye, unspecified eyelid
What it is
Use this code for a localized collection of pus in the left eyelid when the specific eyelid portion is not documented. It indicates an eyelid abscess without further laterality detail beyond the left eye.
Clinical signs
Typical findings include a painful, swollen, red eyelid with possible warmth, tenderness, and fluctuance. Clinical features vary; refer to documentation.
When to use this code
Assign H00.036 when the record clearly states an abscess of the left eyelid and does not identify the upper or lower eyelid. Use it for provider-documented eyelid abscesses, including notes that describe a drained or localized purulent lesion on the left side.
Do not use for
Do not use this code for a stye, chalazion, cellulitis, or a generalized infection without abscess. If the documentation specifies a different eyelid location, code that more specific site instead.
Coding tip
If the note says only “left eyelid abscess,” code the unspecified eyelid option unless the provider documents upper or lower eyelid.