Dermatology claims need more upfront explanation than most specialties. So many procedures sit right on the line between medical and cosmetic, and payers default to denial unless the medical necessity is spelled out clearly. A biopsy or destruction code without that context gets flagged almost automatically. Medical billing dermatology work means building that justification into the claim before submission, not waiting for a denial to explain it. That habit alone prevents a lot of the back-and-forth that slows down reimbursement for busy dermatology practices.