Blister of unsp eyelid and periocular area, subs

This code signifies a non-thermal fluid-filled lesion on an unspecified eyelid or the surrounding periocular skin, encountered during a subsequent phase of care. It indicates a blister that is not caused by burns or frostbite, affecting the tissue around the eye.

Use this code for follow-up encounters where a patient is being treated for a non-thermal blister of the eyelid or periocular area. Documentation should clearly state the blister's presence, its non-thermal etiology, and that the encounter is for ongoing management rather than initial treatment.

• Ensure documentation specifies "non-thermal" to differentiate from burn blisters.
• The "D" seventh character indicates a subsequent encounter; verify the patient's stage of care.
• If the specific eyelid (right or left) is documented, a more specific code should be used.