Abscess of left upper eyelid

This code signifies a localized collection of pus within the tissue of the upper eyelid on the patient's left side. It indicates an inflammatory response, typically due to a bacterial infection, leading to swelling, pain, and redness in the affected area.

Apply this code when documentation clearly specifies an abscess affecting the left upper eyelid. This diagnosis is supported by physician notes detailing examination findings such as a tender, fluctuant mass, erythema, and purulent discharge in the specified location.

• Ensure laterality (left) and specific eyelid (upper) are clearly documented to support this precise code.
• Distinguish from cellulitis (H00.01-) or hordeolum (H00.02-), which are different inflammatory conditions of the eyelid.
• Code any underlying systemic conditions or causative organisms if documented and clinically relevant.