Squamous blepharitis left lower eyelid

This code indicates an inflammatory condition of the left lower eyelid, specifically characterized by squamous blepharitis. This involves scaling and crusting along the eyelid margin, often associated with chronic inflammation of the hair follicles and sebaceous glands.

Use this code when documentation specifies squamous blepharitis affecting the left lower eyelid. Supporting documentation should clearly identify the laterality (left), the specific eyelid (lower), and the type of blepharitis (squamous). This code is appropriate for both initial and subsequent encounters for this condition.

• Ensure the documentation specifies "squamous" blepharitis; other types (e.g., ulcerative) have different codes.
• Verify the laterality (left) and the specific eyelid (lower) are clearly documented to avoid miscoding.
• Do not use this code for unspecified blepharitis or blepharitis affecting other eyelids or laterality.