Acute lymphangitis of perineum

This code signifies an acute bacterial infection of the lymphatic vessels within the perineal region. It typically presents as red, tender streaks extending from an infection site, accompanied by inflammation and swelling. This condition is distinct from cellulitis, though they can co-occur.

Apply this code when documentation clearly indicates acute inflammation of the lymphatic channels specifically located in the perineum. This diagnosis is supported by findings such as red streaking, tenderness, and swelling in the perineal area, often originating from a local infection or wound.

• Differentiate from cellulitis (L03.31x) of the perineum; lymphangitis involves the lymphatic vessels, not primarily the subcutaneous tissue.
• Ensure the documentation specifies "acute" and "perineum" for accurate code assignment.
• Code any underlying infection or wound that is the source of the lymphangitis as an additional diagnosis.