Specialty
Dermatology Billing
Dermatology's billing difficulty is mostly definitional: whether a service is medically necessary or cosmetic, and whether the note records the detail the code depends on.
What makes it different
The things that decide whether these claims get paid.
- Medical versus cosmetic decides coverage
- The same procedure may be covered or not depending on indication. Documentation has to establish medical necessity explicitly; an assumption that it is obvious is where denials come from.
- Lesion codes depend on measurements
- Size, anatomical site and removal method all affect which code applies. A note missing a measurement cannot support the code billed, and the measurement cannot be added afterwards.
- Multiple procedures in one visit need correct sequencing
- Dermatology routinely performs several procedures per encounter. Reimbursement depends on sequencing and modifiers, and errors here reduce payment without producing a denial.
- Pathology may be billed separately
- Where specimens go to an outside laboratory, responsibility for the pathology claim needs to be unambiguous — otherwise it is billed twice or not at all.
Where the money goes
Four leaks specific to Dermatology.
A healthy practice in this specialty collects around 97% of billed charges. Most of the gap below that is made up of these.
- Lesion codes unsupported by a documented measurement
- Medical necessity not stated for a procedure that can be cosmetic
- Multiple procedures sequenced so that later ones underpay
- Pathology claims neither party billed
| Measure | Result | Reference |
|---|---|---|
| Collection rate | 97.0%OK | > 96% |
| Days in A/R | 28OK | < 30 |
| Denial rate | 3.0%OK | < 5% |
| A/R over 90 days | 8.0%OK | < 10% |
Illustrative figures — not a client result.
Questions
Asked most often.
Why do so many dermatology denials relate to necessity?
Because a large share of procedures have both a medical and a cosmetic indication. Payers default to the cosmetic reading unless the documentation rules it out.
What is the single most useful documentation habit?
Recording lesion size and site at the time of the procedure. It cannot be reconstructed later, and without it the correct code cannot be defended.