Dermatology

11106 — Incisional biopsy of skin; single lesion

This code covers a skin biopsy in which a scalpel is used to cut into a lesion and remove a wedge or slice of tissue for pathologic analysis.

  • Typical setting: Dermatology clinic, hospital
  • National avg charge (illustrative): $100-$220 Medicare allowed (approx. $110-$175 national Medicare average; commercial payers $150-$300)
  • Most-disputed reason: Confusion with excisional biopsy: billing 11106 when the entire lesion was removed — an excisional biopsy of the entire lesion should use codes 11400-11406 (benign) or 11600-11606 (malignant)

What it means

What 11106 actually means

This code covers a skin biopsy in which a scalpel is used to cut into a lesion and remove a wedge or slice of tissue for pathologic analysis. Unlike a punch biopsy (11104), an incisional biopsy cuts into but does not completely remove the lesion. It is used when a larger sample or full-thickness specimen is needed for an accurate diagnosis.

Common errors with this code

What goes wrong on real bills.

Most bills that look correct still contain at least one of these issues. Up to 49% of medical bills contain errors (CFPB).

If you see 11106 on your bill

Three steps before paying.

1. Get the itemized bill. If your statement only shows a summary, request the CPT-level itemized bill before paying. Generate the request language →

2. Cross-check against the EOB. Compare what your insurer's Explanation of Benefits says you owe versus what the hospital is asking. They disagree more often than people think. Read the bill-vs-EOB guide →

3. Run a free Bill Scan. Upload the bill (and EOB if you have it) and BillBusted will flag the most likely issues with this specific code in your specific state. Run free scan →

Related codes

Other codes in this category.

People who land on 11106 often also see these adjacent codes on the same bill.

Related BillBusted guides

Plain-English reads if you see 11106 on a bill.

11106 FAQ

Plain-English answers.

What does 11106 usually cost?

$100-$220 Medicare allowed (approx. $110-$175 national Medicare average; commercial payers $150-$300). Costs vary by region, payer contract, and whether the service was performed in a hospital outpatient department (which adds a facility fee) versus a free-standing clinic.

What's the most common billing error on 11106?

Confusion with excisional biopsy: billing 11106 when the entire lesion was removed — an excisional biopsy of the entire lesion should use codes 11400-11406 (benign) or 11600-11606 (malignant)

What should I do if I see 11106 on my bill?

Request the itemized bill and the matching EOB from your insurer. Compare the units/quantity billed against what you actually received. Run a free BillBusted scan to flag the most likely errors specific to 11106 before paying.

Don't pay 11106 blindly.

The free scan tells you in under 60 seconds whether this charge looks reasonable for your situation.