The Real Cost of Dermatology Billing Errors

The leaks that recur across dermatology practices

• Destruction add-on units never billed, because lesion counts documented in the note never reached the claim line.
• Excisions sized from the pathology specimen rather than the excised diameter measured before fixation, which systematically undersizes the code.
• Pathology professional or technical components unbilled where the practice is entitled to one of them.
• Same-day evaluations dropped entirely to avoid denials, which trades a defensible claim for a certain loss.
• Denials written off inside contractual adjustments, where they never appear in a denial report at all.
• Charges stranded in unsigned notes past timely filing, invisible unless someone runs the report daily.

How to size it in your own data

Take one month of encounters and compare documented lesion counts against billed units on the destruction codes. Any consistent gap multiplies straight through the year and is usually the largest single item.

Run contractual adjustments by reason. Where a large share posts to a generic adjustment code, that bucket is hiding denials and underpayments that were never worked.

Compare allowed amounts against the contracted fee schedule per payer for your top ten codes. Silent underpayment is common and almost never disputed because nobody checks.

Prevention beats recovery

Appeals recover part of last month. A note template that forces per-lesion site and size capture prevents next month, every month after, and does it without staff time per claim.

The practical order is: fix the template, fix the charge-entry checkpoint, then work the backlog. Practices that start with the backlog are still working the same backlog a year later.