ICD-10 Code H05.012 – Cellulitis of left orbit (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H05.012 – Cellulitis of left orbit
What it is
H05.012 identifies cellulitis involving the left orbit, meaning an acute infection and inflammation of the tissues around the left eye socket. Use it for orbital, not simple eyelid, infection.
Clinical signs
Typical findings include painful swelling, redness, and tenderness around the left eye, often with eye movement pain or limited motion. Clinical features vary; refer to documentation.
When to use this code
Use this code when the provider documents cellulitis of the left orbit, periorbital infection extending into the orbit, or similar left-sided orbital infection terminology. It is appropriate when the record clearly identifies the left orbit as the involved site. Check documentation if laterality or anatomic depth is unclear.
Do not use for
Do not use H05.012 for uncomplicated eyelid cellulitis, conjunctivitis, or nonspecific facial skin infection. If the record does not confirm orbital involvement, choose a more accurate code.
Coding tip
Confirm both laterality and orbital involvement in the provider note before assigning H05.012.