Dermatology
What Is Mohs Surgery?
Last reviewed: May 2026 · Haute MD Editorial Team
Mohs surgery is a specialized surgical technique for removing skin cancer — primarily basal cell carcinoma and squamous cell carcinoma — that achieves the highest cure rates of any skin cancer treatment (up to 99% for primary tumors). In Mohs surgery, the surgeon removes thin layers of tissue one at a time, immediately examining each layer under a microscope, until no cancer cells remain. This allows for complete removal while preserving the maximum amount of healthy surrounding tissue.
Who performs Mohs surgery?
Mohs surgery is performed by dermatologists with specialized fellowship training in Mohs micrographic surgery. It is typically performed in an outpatient setting under local anesthesia.
When is Mohs surgery recommended?
Mohs surgery is recommended for skin cancers in cosmetically or functionally sensitive areas (face, ears, nose, eyelids, lips, scalp), large or aggressive tumors, tumors with poorly defined borders, recurrent tumors, and tumors in patients who are immunocompromised.
What to expect during Mohs surgery
The procedure is performed in stages. After removing a layer, you wait while it is examined. If cancer remains, another layer is removed from the precise area where cancer was found. This continues until all margins are clear. Reconstruction of the wound follows — either by primary closure, skin graft, or flap repair.
Frequently Asked Questions
How long does Mohs surgery take?
Mohs surgery can take anywhere from 2 hours to a full day, depending on how many stages are required. Most procedures are completed in 3-4 hours.
Is Mohs surgery painful?
Mohs surgery is performed under local anesthesia, so you should not feel pain during the procedure. Post-operative discomfort is typically mild and managed with over-the-counter pain relievers.
What is the cure rate for Mohs surgery?
Mohs surgery achieves cure rates of up to 99% for primary basal cell carcinoma and 97% for recurrent cases — higher than any other skin cancer treatment.
Does insurance cover Mohs surgery?
Yes. Mohs surgery is considered a medically necessary procedure for treating skin cancer and is covered by Medicare and most private insurance plans.
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Dermatology · Atlanta, Georgia, GA
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Dermatology · Aventura, FL
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Dermatology · Bryn Mawr, PA
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