CPT® Code 96921

Excimer laser treatment, specifically identified by CPT® Code 96921, is a targeted therapeutic procedure designed for the management of mild to moderate plaque psoriasis. This treatment utilizes the XTRAC laser therapy, which emits high-intensity ultraviolet B (UVB) light at a specific wavelength. The laser is focused directly onto the psoriatic skin plaques, allowing for effective treatment while minimizing exposure to the surrounding healthy skin. The procedure is particularly advantageous as it achieves results comparable to traditional light therapy but requires fewer treatment sessions. The intense nature of the laser light enables it to penetrate deeper into the affected psoriatic skin, making it especially effective for challenging areas such as the scalp and soles of the feet. Prior to treatment, the dermatologist conducts a thorough inspection of the treatment site, evaluating the lesions for signs of redness, erythema, blistering, or pain. During the procedure, the dermatologist carefully aims the laser wand at the patches of psoriasis for a brief duration, continuously monitoring the skin surface to ensure optimal treatment outcomes. For coding purposes, it is important to note that CPT® Code 96920 is used for areas treated that are less than 250 square centimeters, while CPT® Code 96921 is applicable for areas ranging from 250 to 500 square centimeters, and CPT® Code 96922 is designated for areas exceeding 500 square centimeters.