Run a dermatology practice in Tennessee and you're covering three different markets. Nashville, Franklin, and Brentwood carry heavy Medicare Advantage and commercial volume, and each plan has its own authorization list and its own read on medical necessity. Head toward Jackson, Johnson City, or the Cumberland Plateau towns, and an hour's drive for a skin check is normal - a claim kicked back for correction means asking that patient to make the drive twice. Your billing team has to move at the same pace as your schedule, everywhere in the state.
The same excision, coded the same way, can clear one payer's edits and stall on another's, so we track requirements plan by plan instead of one blanket standard. Biologics for psoriasis and atopic dermatitis, photodynamic therapy, and certain lesion procedures each carry conditions that shift by carrier - a Chattanooga Medicare Advantage plan and a Knoxville employer group's commercial plan rarely agree. Your named account manager keeps that map current for your practice, so you're not the one tracking down which plan changed its rules this quarter.
Underneath all that payer variation, most dermatology claims run into the same handful of snags: an E/M billed the same day as a biopsy without modifier 25 support, separate-site work missing modifier 59, excisions measured after the margins are taken, Mohs stages documented one block short, and we catch most of it in the chart before submission, because our scrub rules are tuned against denial patterns from 1,378+ providers across 42 states. Practices on our team run a 27-day average A/R and a 97% net collection rate.