Ulcerative blepharitis left eye, upper and lower eyelids

This code signifies an inflammatory condition affecting the eyelid margins of the left eye, specifically involving both the upper and lower eyelids, characterized by ulceration. Ulcerative blepharitis is often associated with bacterial infection, leading to crusting, redness, irritation, and potential loss of eyelashes. The ulcerations indicate a more severe form of blepharitis.

Apply this code when documentation clearly specifies ulcerative blepharitis affecting the left eye, with involvement of both the upper and lower eyelids. This diagnosis is typically supported by ophthalmological examination findings noting ulcerations along the eyelid margins, often with purulent discharge or significant crusting. Use this code when the laterality and specific eyelid involvement are precisely documented.

• Ensure documentation specifies "ulcerative" blepharitis; do not use for non-ulcerative forms.
• Verify laterality (left eye) and specific eyelid involvement (upper and lower) are clearly stated.
• Consider co-reporting with codes for underlying infectious agents if identified and documented.