Lasers
Lasers have played a role in the treatment of severe scarring in wounded warriors and other patient populations.7 Until 2018, there were no CPT codes that allowed precise reporting of these therapies. We now have a series of tracking codes, which are not valued by the Specialty Society Relative Value Scale Update Committee process but are nonetheless reportable, for this valuable treatment.8
The base code for a new pair of codes for reporting fractional ablative laser treatment, which is modeled after the skin graft code series, is 0479T (fractional ablative laser fenestration of burn and traumatic scars for functional improvement; first 100 cm2 or part thereof, or 1% of body surface area of infants and children). The add-on code is 0480T (fractional ablative laser fenestration of burn and traumatic scars for functional improvement; each additional 100 cm2, or each additional 1% of body surface area of infants and children, or part thereof [list separately in addition to code for primary procedure]), which means the code can be reported multiple times in addition to a single unit of 0479T. The aggregate treatment area should only be reported once per day regardless of the number of passes of one or more lasers over the area that day, and codes 0479T and 0480T should not be reported with codes 0491T or 0492T, which are a new family of tracking codes used for ablative laser treatment of chronic open wounds. If the scars are excised in a full-thickness manner, the benign excision codes 11400 to 11446 should be used instead.
For laser treatment of open wounds, 0491T (ablative laser treatment, noncontact, full-field and fractional ablation, open wound, per day, total treatment surface area; first 20 cm2 or less) is the base code for this pair of codes, and 0492T (ablative laser treatment, noncontact, full-field and fractional ablation, open wound, per day, total treatment surface area; each additional 20 cm2, or part thereof [list separately in addition to code for primary procedure]) is the add-on code, similar to the 0479T and 00480T codes described above. Keep in mind that all 4 of these tracking codes do not have defined values, and payment is at the discretion of the payer. If utilization of the procedures increases along with the development of appropriate evidence-based literature to support it, it is possible these will be converted into standard category I CPT codes that will be valued and covered by payers.
Final Thoughts
For more details on the new codes for PDT and lasers, I would strongly suggest obtaining a copy of CPT Changes 2018: An Insider’s View (https://commerce.ama-assn.org/store/catalog/productDetail.jsp?product_id=prod2800018&navAction=push), as well as the 2018 CPT manual for those who are actively practicing. Members of the American Academy of Dermatology also can get the new CPT manual as part of the group’s Coding Value Pack (https://store.aad.org/products/11383) along with Principles of Documentation for Dermatology and 2018 Coding & Billing for Dermatology.