Reconstructive surgery after Mohs is generally covered by insurance when it’s considered medically necessary rather than purely cosmetic. The key distinction insurers make is whether the procedure restores function or repairs a defect caused by cancer removal, versus simply improving appearance beyond what’s needed. In practice, most post-Mohs reconstruction falls on the covered side of that line, since closing a surgical wound on the face or another visible area typically qualifies as restoring normal form and function.
Why Most Post-Mohs Reconstruction Qualifies
Mohs surgery removes skin cancer layer by layer, often leaving a wound that can’t simply be stitched closed. Depending on the size and location of the tumor, your surgeon may need to perform a skin flap, skin graft, or complex layered closure to repair the defect. These reconstructive techniques are billed as separate procedures from the Mohs surgery itself, but they’re part of the same medical event: treating cancer and repairing what it left behind.
Insurance companies distinguish between “reconstructive” and “cosmetic” surgery. Reconstructive surgery corrects a functional problem or restores normal appearance after disease, injury, or a congenital issue. Cosmetic surgery changes appearance purely for aesthetic reasons. A skin flap to close a wound on your nose after cancer removal is reconstructive. A nose job to change the shape you were born with is cosmetic. Because post-Mohs repair addresses a defect caused by cancer treatment, it almost always falls into the reconstructive category.
How Medicare Handles It
Medicare covers reconstructive procedures after skin cancer removal but does not cover cosmetic surgery unless it’s needed because of accidental injury or to improve the function of a malformed body part. For post-Mohs reconstruction, Medicare typically treats the repair as part of medically necessary cancer treatment.
Certain procedures that can serve either cosmetic or reconstructive purposes require prior authorization before Medicare will pay. Eyelid surgery (blepharoplasty) is one common example. If Mohs surgery near your eye leaves a defect that affects eyelid function, the reconstructive blepharoplasty may be covered, but your surgeon needs to submit documentation to Medicare for approval before performing it. You don’t need to handle the prior authorization yourself; your provider manages that process.
Under Medicare, beneficiaries pay 20% coinsurance after meeting their annual deductible. That applies to both the Mohs procedure and any reconstruction. If your surgeon is a non-participating Medicare provider, they can charge up to 15% above Medicare’s approved rates, which increases your share. Payment rates for Mohs procedures range from roughly $157 to $640 depending on location and complexity, with reconstruction billed on top of that.
Private Insurance Coverage
Most private insurers follow the same reconstructive-versus-cosmetic framework. If your surgeon documents that the procedure repairs a defect from cancer removal and restores function or normal appearance, it’s typically approved. The specifics vary by plan, though. Some insurers require pre-authorization for reconstruction, especially for more complex procedures like larger skin grafts or staged repairs.
There is no federal law specifically mandating coverage of skin cancer reconstruction the way the Women’s Health and Cancer Rights Act requires coverage of breast reconstruction after mastectomy. That law applies only to breast cancer. For skin cancer, coverage depends on your plan’s terms and your state’s insurance regulations. Some states have additional protections. You can contact your state’s insurance department to find out whether any apply to your coverage.
What Affects Whether You’re Approved
Several factors influence whether your insurer covers the reconstruction without pushback:
- Location of the defect. Wounds on the face, hands, or other functionally important areas are the easiest to get approved because the reconstruction clearly restores normal function or prevents complications like impaired vision or restricted movement.
- Size of the wound. Larger defects that can’t heal well on their own are more straightforwardly medically necessary than small wounds that might close with simple stitches.
- Type of closure. Your surgeon bills reconstruction using specific procedure codes for flaps, grafts, or complex closures. The code must match the documented defect. For skin flaps, the total defect size (including both the wound itself and any additional tissue rearranged to close it) determines which code is used.
- Documentation. Clear operative notes describing the defect size, location, and why simple closure wasn’t possible make the difference between smooth approval and a denied claim.
When Coverage Gets Complicated
Problems tend to arise in a few specific situations. If your reconstruction involves multiple stages spread over weeks or months, each stage may need separate authorization. If a revision procedure is needed later to improve scarring, your insurer may classify that as cosmetic rather than reconstructive, especially if the original wound has healed and there’s no functional impairment.
Another common issue is when the Mohs surgeon and the reconstructive surgeon are different providers. This is actually standard practice for complex cases, particularly on the face. The Mohs surgeon removes the cancer, and a plastic surgeon or facial plastic surgeon performs the repair, sometimes on the same day. Both providers bill separately. As long as the reconstruction is performed in connection with the cancer removal and documented appropriately, this split arrangement shouldn’t affect coverage, but it does mean you may receive two separate bills with two separate coinsurance amounts.
If your claim is denied, the denial letter will explain the reason. Common reasons include missing documentation, a determination that the procedure was cosmetic, or lack of prior authorization. You have the right to appeal, and your surgeon’s office can often help by submitting additional clinical documentation showing why the reconstruction was medically necessary.
Your Likely Out-of-Pocket Costs
Even with full coverage, you’ll still owe your share based on your plan’s cost-sharing structure. For most insured patients, that means your deductible (if you haven’t met it yet for the year) plus coinsurance or a copay. If you have a high-deductible plan and haven’t had other medical expenses that year, your out-of-pocket costs for the combined Mohs and reconstruction could be significant before insurance kicks in.
Ask your surgeon’s billing office to check your benefits before the procedure. They can verify whether pre-authorization is required, confirm that both the Mohs surgery and reconstruction codes are covered under your plan, and give you an estimate of your patient responsibility. If you’re having the procedure done by two different surgeons, check coverage for both providers to make sure they’re in your network.