Edema of right lower eyelid

This code signifies the presence of swelling or fluid accumulation specifically affecting the lower eyelid of the right eye. It indicates an abnormal increase in interstitial fluid within the tissues of the right lower eyelid, which can manifest as puffiness or distention.

This code is appropriate when documentation clearly states edema of the right lower eyelid. It is used for conditions such as allergic reactions, inflammatory processes, trauma, or systemic conditions manifesting as localized swelling in this specific anatomical location. The physician's notes should explicitly identify the affected eyelid and laterality.

• Ensure the documentation specifies "lower" eyelid and "right" eye; avoid using this code for generalized periorbital edema or upper eyelid involvement.
• Always code the underlying cause of the edema if known and documented (e.g., allergic conjunctivitis, trauma, systemic disease), sequencing it before the edema code.
• Differentiate from H02.841 (edema of right upper eyelid) and H02.843 (edema of right eye, unspecified eyelid).