CPT® Code 15842

The procedure described by CPT® Code 15842 involves the use of a graft to address facial nerve paralysis through a specialized technique known as a free muscle flap by microsurgical means. In this context, a graft refers to a piece of tissue that is transplanted from one part of the body to another to restore function or appearance. Specifically, the fascia, which is a connective tissue that surrounds muscles, is typically harvested from the fascia lata, located in the leg. This harvested graft is then meticulously transplanted to the facial area where paralysis has occurred. The microsurgical technique employed allows for precise suturing of the graft beneath the skin, aiming to partially reanimate the facial muscles that have been affected by paralysis. This procedure is distinct from other related codes, such as CPT® Code 15841, which pertains to the use of a free muscle graft, and CPT® Code 15845, which involves a regional muscle transfer. The choice of code depends on the specific surgical technique and type of graft utilized during the procedure.