Breast reduction surgery, medically known as reduction mammoplasty, is a procedure designed to alleviate physical discomfort caused by excessively large breasts. Women with macromastia (abnormally large breasts) often experience chronic pain in the neck, shoulders, and back, along with skin irritation, poor posture, and difficulty performing physical activities.
For medical billing and coding professionals, understanding the correct CPT (Current Procedural Terminology) codes for breast reduction is crucial for accurate reimbursement. The primary CPT code for breast reduction is 19318, but additional codes may apply depending on the surgical technique, patient’s condition, and insurance requirements.
This guide provides an in-depth look at CPT coding for breast reduction, insurance coverage criteria, documentation best practices, and common billing challenges. Whether you’re a surgeon, coder, or patient, this article will help you navigate the complexities of breast reduction coding.

CPT Code for Breast Reduction
2. Understanding Breast Reduction Surgery
Breast reduction surgery involves the removal of excess breast tissue, fat, and skin to achieve a more proportionate breast size. The procedure not only improves physical comfort but also enhances body image and self-esteem.
Surgical Techniques
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Inferior Pedicle Technique (Anchor Incision): Most common method, involving a keyhole-shaped incision.
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Vertical Reduction (Lollipop Incision): Fewer scars, suitable for moderate reductions.
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Liposuction-Only Reduction: Minimally invasive, best for fatty tissue removal without significant sagging.
Who Qualifies for Breast Reduction?
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Patients with symptomatic macromastia (pain, rashes, nerve compression).
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Failed conservative treatments (physical therapy, supportive bras, pain medications).
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Schnur Sliding Scale used by insurers to determine medical necessity based on body surface area (BSA) and tissue removal weight.
3. Medical Necessity vs. Cosmetic Breast Reduction
Insurance companies differentiate between medically necessary and cosmetic breast reductions.
| Criteria | Medically Necessary | Cosmetic |
|---|---|---|
| Symptoms | Chronic pain, rashes, nerve issues | No significant symptoms |
| Conservative Treatments | Physical therapy, pain meds tried | No prior treatments |
| Tissue Removal Amount | Meets Schnur Scale minimum | Below required amount |
| Insurance Coverage | Often covered | Patient self-pay |
4. CPT Codes for Breast Reduction: An Overview
The American Medical Association (AMA) assigns specific CPT codes for breast reduction procedures.
Primary CPT Code
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19318 (Reduction Mammoplasty): Covers removal of breast tissue with nipple repositioning.
Additional Related Codes
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19316 (Mastopexy): Breast lift without significant tissue removal.
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15877 (Suction Lipectomy): Liposuction-only breast reduction.
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19330 (Breast Implant Removal): If performed alongside reduction.
Table: CPT Codes for Breast Procedures
| CPT Code | Description | Typical Use Case |
|---|---|---|
| 19318 | Reduction mammoplasty | Symptomatic macromastia |
| 19316 | Mastopexy (breast lift) | Sagging without excess tissue |
| 15877 | Liposuction of breast | Fatty tissue removal only |
| 19330 | Removal of breast implants | If combined with reduction |
5. CPT Code 19318: Reduction Mammoplasty
CPT 19318 is the most frequently used code for breast reduction. It includes:
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Excision of excess breast tissue and skin.
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Nipple-areolar complex repositioning.
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Liposuction for contouring (if performed).
Billing Guidelines
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No separate billing for liposuction (included in 19318).
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Modifier -50 for bilateral procedures.
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Documentation must include:
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Symptoms (pain, rashes, shoulder grooving).
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Grams of tissue removed (per insurer requirements).
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6. Insurance Coverage and Documentation Requirements
Most insurers follow strict criteria for approving breast reduction surgery. Required documents include:
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Physician’s notes detailing symptoms.
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Photographs showing skin irritation or shoulder grooving.
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Failed conservative treatments (physical therapy, pain meds).
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Schnur Sliding Scale calculation (minimum tissue removal based on BSA).
7. Common Reasons for Denial and How to Appeal
Insurance denials often occur due to:
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Insufficient documentation.
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Tissue removal below Schnur Scale minimum.
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Cosmetic exclusion clauses.
Appeal Strategies
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Submit additional medical records.
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Provide peer-reviewed studies supporting medical necessity.
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Request peer-to-peer review with the insurer’s medical director.
8. Coding Tips for Medical Billers and Coders
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Always verify insurance pre-authorization.
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Use modifier -22 for unusually complex cases.
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Ensure grams of tissue removed are documented.
9. Conclusion
Breast reduction surgery (CPT 19318) is a medically necessary procedure for many patients suffering from macromastia. Proper coding, documentation, and insurance navigation are essential for reimbursement. Surgeons and coders must understand the Schnur Scale, modifier usage, and appeal processes to maximize claim approvals.
10. Frequently Asked Questions (FAQs)
Q1: What is the difference between CPT 19318 and 19316?
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19318 is for tissue removal (reduction), while 19316 is for a breast lift without significant reduction.
Q2: How much tissue removal is required for insurance coverage?
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Insurers use the Schnur Scale, typically requiring ≥ 500g per breast (varies by BSA).
Q3: Can liposuction be billed separately with 19318?
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No, liposuction is included in 19318 and should not be billed separately.
