Blister of left eyelid and periocular area, subs

This code signifies a non-thermal blister located on the left eyelid or the surrounding periocular region. It indicates a follow-up visit for a previously diagnosed and treated blister, not the initial presentation.

Use this code for subsequent encounters when a patient presents for ongoing management, follow-up, or healing assessment of a non-thermal blister affecting the left eyelid or periocular area. Documentation should clearly state "subsequent encounter" or indicate a follow-up visit for the specified condition.

• Ensure documentation specifies "nonthermal" to differentiate from burn blisters.
• Verify the laterality is "left" and the anatomical site is "eyelid and periocular area."
• Confirm the encounter type is "subsequent" (D seventh character) for ongoing care, not the initial treatment (A) or sequela (S).