What Mohs surgery costs, and what insurance actually covers

Mohs micrographic surgery is almost always covered by insurance, including Medicare, because it is treatment for cancer rather than a cosmetic procedure. Total billed charges commonly run from roughly one thousand to several thousand dollars depending on the number of stages, the location of the tumor, and the reconstruction, and what a patient actually pays out of pocket comes down to their deductible, coinsurance, and network, not the sticker price. Understanding how the bill is built makes both the estimate and the explanation of benefits far less mysterious.

Why the price varies so much. Mohs is billed by stage: the first layer carries the base charge and each additional layer adds a smaller one, so a tumor cleared in one stage costs meaningfully less than one that needs three. Location matters because delicate sites take longer and are repaired with more complex techniques. The reconstruction, whether a simple closure, a flap, or a graft, is billed as its own procedure, which is why two patients with the same cancer can see very different totals, a range explained by the repair options in reconstruction after Mohs surgery.

One efficiency is built in. In Mohs, the surgeon is also the pathologist, so tumor removal and the microscopic margin reading happen under one roof and one bill, rather than as a separate pathology charge from an outside lab days later. That single-visit structure, described in what Mohs surgery is and why it has the highest cure rate, is part of why studies generally find Mohs cost-effective compared with excision that needs a second procedure when margins come back positive.

What insurance covers, and where the surprises hide. Medicare and nearly all commercial plans cover Mohs when it is medically indicated, typically for tumors on the head and neck, recurrent tumors, or aggressive subtypes. The surprises are rarely about coverage and usually about plumbing: a plan that requires prior authorization, an out-of-network surgeon or facility, a facility fee when the procedure is done in a hospital-based clinic rather than an office, or a deductible that has not been met yet. A pre-procedure call to the insurer with the planned procedure codes settles most of this in ten minutes (Medicare coverage search).

Questions worth asking before the appointment. Ask the surgeon's office whether the surgeon and facility are in network, whether the estimate includes reconstruction, and what happens to the bill if the repair turns out to be more complex than planned. Ask your insurer what your coinsurance is for outpatient surgery and whether prior authorization is on file. If you are uninsured or facing a high deductible, ask about self-pay pricing; many practices offer it, and treating the cancer promptly is always cheaper than treating it later, when it is larger.

Cost should not drive the treatment choice alone. For high-risk tumors, the higher cure rate means fewer recurrences to pay for, in money and in tissue. For small, low-risk cancers on the trunk, a standard excision can be the right and cheaper call, a decision framework covered in when Mohs is the right choice, and when it is not. The Skin Cancer Foundation maintains a plain-language overview of the procedure and its economics for patients (Skin Cancer Foundation on Mohs).

The bottom line for budgeting: expect the procedure to be covered, expect the total to reflect stages plus repair, and expect your own cost to be your plan's normal share of an outpatient surgery. A short call to the office and the insurer before Mohs day removes nearly all of the financial uncertainty, leaving the day itself as the only thing to plan for.

Related reading: Finding a qualified Mohs surgeon.