ICD-10 Code H00.034 – Abscess of left upper eyelid (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H00.034 – Abscess of left upper eyelid
What it is
This code identifies a localized pus-filled infection in the left upper eyelid. It indicates an abscess confined to that eyelid, not a generalized eye or orbital infection.
Clinical signs
Typical findings include eyelid swelling, redness, tenderness, and a fluctuant or draining lesion. Clinical features vary; refer to documentation if the record does not clearly describe an abscess.
When to use this code
Use H00.034 when the provider documents an abscess specifically on the left upper eyelid. It is appropriate when the note distinguishes this from a stye, chalazion, cellulitis, or orbital involvement. Check documentation if laterality or eyelid location is unclear.
Do not use for
Do not use this code for nonspecific eyelid swelling, conjunctivitis, or infections involving the orbit. If the record describes a different eyelid, different laterality, or a non-abscess lesion, choose the documented condition instead.
Coding tip
Confirm the abscess is documented as left upper eyelid and not just “eyelid infection” before assigning H00.034.