Cellulitis of left orbit

This code signifies an acute bacterial infection of the soft tissues surrounding the left eyeball, specifically within the bony orbit. This infection can involve the eyelids, periorbital tissues, and structures posterior to the orbital septum, potentially leading to serious complications if untreated.

Apply this code when documentation clearly indicates cellulitis affecting the left orbit, often presenting with pain, swelling, erythema, and proptosis of the left eye. Supporting clinical notes should detail the location of the infection as orbital, distinguishing it from preseptal (periorbital) cellulitis.

• Differentiate carefully between orbital cellulitis and preseptal (periorbital) cellulitis; the latter involves tissues anterior to the orbital septum.
• Ensure laterality is accurately documented and coded (left, right, or bilateral).
• Look for documentation of associated conditions, such as sinusitis, which may be the source of the orbital infection and require additional coding.