Breast Reduction Calculator

Woman measuring her breasts before breast reduction

Living with overly large breasts can feel like carrying a heavy burden, literally. Many patients explore breast reduction surgery seeking relief, but have questions when it comes to cost and insurance coverage.

That’s where understanding the Schnur Scale becomes essential, and our breast reduction calculator helps. This guide will walk you through how insurance companies determine medical necessity, what the 22nd percentile means for your coverage, and how to use body surface area calculations to understand your options.

Our Breast Reduction Calculator

Input your height and weight into the calculator, and it will automatically calculate your body surface area (BSA). 

Breast Reduction Calculator Using the Schnur Scale

Body Surface Area Calculator

Enter a valid height
Enter a valid weight

Minimum Tissue to Remove (grams per breast)

Body Surface Area (BSA)

0.00
ft²

Body Surface Area (BSA)

0.00

Tissue Grams Required for Removal

0
grams

This will give you the minimum amount of breast tissue (in grams) that would need to be removed from each breast to meet the 22nd percentile requirement for your body surface area. This gives you a starting point for conversations with both your surgeon and your insurance provider. 

Keep in mind that this is an estimate. Dr. Harris will make a more precise determination during your consultation based on a physical examination.

What Is Body Surface Area (BSA) and How Is It Calculated?

Body Surface Area is a measurement that considers both your height and weight to estimate the total surface area of your body. 

The Mosteller Formula

The most commonly used formula for calculating BSA is the Mosteller formula. It looks like this:

BSA (m²) = √([height in cm × weight in kg] / 3,600)

Don’t worry, you won’t need to do the math! Our breast reduction calculator above does it automatically when you enter your height and weight.

How BSA Connects to Tissue Removal

Once your BSA is calculated, it’s matched to a corresponding minimum tissue weight on the Schnur Scale. For example:

The Sliding Schnur Scale
Body Surface Area (BSA)Minimum Grams Per Breast (22nd Percentile)
1.50 m²260 grams
1.70 m²370 grams
1.90 m²527 grams
2.00 m²628 grams
2.10 m²750 grams

The larger your body surface area, the more tissue generally needs to be removed to meet insurance requirements.

Important note: Many insurance companies waive the Schnur Scale requirement entirely if your surgeon anticipates removing more than 1,000 grams (about 2.2 pounds) per breast.

Understanding the Schnur Scale: Your Key to Insurance Coverage

The Schnur Scale is a mathematical tool that insurance companies use to determine whether a breast reduction is medically necessary or purely cosmetic. This sliding scale creates an objective standard by comparing your body surface area to the amount of breast tissue that needs to be removed.

Most major insurance providers, including NYSHIP, Blue Cross Blue Shield, and many others, require that the planned tissue removal meets or exceeds the 22nd percentile on the Schnur Scale. If your surgeon estimates removing at least this amount, your procedure is more likely to be considered medically necessary and covered by insurance.

Why the 22nd Percentile Matters

The 22nd percentile represents a threshold established through research on women seeking breast reduction. Generally, women falling above this percentile sought the procedure to relieve genuine physical symptoms rather than purely aesthetic reasons.

When your planned reduction meets this benchmark, it signals to insurance companies that your breast size is causing measurable physical problems that surgery can resolve.

Beyond the Numbers: What Else Qualifies as Medically Necessary?

Meeting the Schnur Scale requirements is just one piece of the puzzle. Most insurance companies also require documentation of specific symptoms and conditions that your breast size is causing. 

Common Qualifying Symptoms

Insurance providers typically cover breast reduction when patients experience two or more of these documented conditions:

Physical Pain:

Skin Problems:

  • Intertrigo (skin irritation and rashes beneath the breasts)
  • Chronic yeast infections in the breast fold
  • Ulceration or skin breakdown

Physical Limitations:

The Importance of Conservative Treatment

Most insurance companies require documentation that you’ve tried non-surgical treatments for at least three to six months before approving breast reduction surgery. At Harris Plastic Surgery, we specialize in helping patients document these conservative treatments properly. 

What If the Schnur Scale Doesn’t Capture Your Experience?

The Schnur Scale has been controversial in the plastic surgery community because it applies a one-size-fits-all approach to a highly individual medical condition. A woman with a smaller frame might experience significant physical problems even if she doesn’t meet the strict numerical requirements.

When Calculations Fall Short

Even Dr. Schnur himself later questioned whether his scale should be used as the sole criterion for insurance coverage. The scale doesn’t account for:

  • Individual body proportions and frame size
  • Breast density and tissue distribution
  • Severity of documented symptoms
  • Impact on quality of life and daily function 

Building a Strong Case

If your situation doesn’t perfectly fit the Schnur Scale requirements, don’t lose hope. We have successfully helped many patients secure coverage by building comprehensive cases that include detailed documentation of symptoms and records from physical therapy, chiropractic care, and other conservative treatments.

Your Path to Comfort Starts With a Consultation

When you meet the Schnur Scale requirements and have documented medical necessity, insurance coverage makes this life-changing procedure accessible. Our breast reduction calculator is the first step in understanding whether you qualify, but the expert team at Harris Plastic Surgery is here to guide you through every aspect of the process.

Don’t let insurance confusion keep you from seeking the relief you deserve. Contact our office today to schedule your consultation with Dr. Harris and start your journey toward comfort and confidence.

Joanne Parrinello, patient coordinator

Joanne Parrinello | Practice Manager

Joanne Parrinello is an expert patient care coordinator, with two decades of experience navigating the complex financial side of medically necessary breast reduction and reconstruction surgery. She acts as a guide to patients, helping them understand their options and their expected out-of-pocket expenses. The insurance industry can be complex and filled with jargon that makes you feel like you need a translator. At Harris Plastic Surgery, Joanne is that translator.