Accurate coding and documentation are key when billing for advanced gynecologic procedures. CPT 58546 is used to report a laparoscopic myomectomy - specifically, when five or more fibroids are removed from the uterus and/or the total weight of the fibroids exceeds 250 grams.

It is a complex procedure that is done with minimal incisions, and requires both surgical talent and coding accuracy for complete and timely payment. By knowing the rules, documentation requirements, and appropriate use of modifiers, OBGYN practices can minimize denials and optimize their revenue.

CPT Code 58546 – Description of the Procedure

Official CPT Definition: “Laparoscopy, surgical, myomectomy, 5 or more myomas and/or total weight greater than 250 g, with or without morcellation.”

This code applies when the surgeon removes multiple or large fibroids (myomas) via a laparoscopic approach. Using specialized instruments, the physician enters the abdominal cavity through small incisions, identifies the fibroids, excises them from the uterine wall, and closes the defects to preserve uterine integrity.

It represents a more extensive surgery than CPT 58545 (for 1–4 fibroids ≤250 g) and should only be used when the total fibroid burden exceeds that threshold.

When to Use CPT 58546

Report CPT 58546 when the procedure meets all the following criteria:

The approach is laparoscopic (not open).
Five or more fibroids are removed, or the total weight of excised fibroids exceeds 250 grams.
The intent of the procedure is therapeutic - to treat symptoms such as pain, pressure, or infertility due to uterine fibroids.

The indications that commonly include:

Symptomatic uterine leiomyomas causing abnormal bleeding or pelvic pain.
Infertility due to the distortion of the uterine cavity by fibroids.
Bulk-related symptoms like urinary frequency or pressure.
Rapidly enlarging fibroids where malignancy cannot be ruled out.

Do not report this code when:

The surgeon performs a diagnostic laparoscopy only.
The fibroids are removed via laparotomy - use CPT 58146 instead.
The myomectomy is part of a total laparoscopic hysterectomy - report the appropriate hysterectomy code.

Coding Guidelines and Billing Instructions For CPT Code 58546

Correct application of CPT 58546 ensures compliance and prevents underbilling.

Report 58546 once per operative session, even if fibroids are removed from multiple uterine locations.
Do not bill for laparoscopic diagnostic entry separately; it is included in this code.
Morcellation (manual or power-assisted) is bundled into this procedure and not separately billable.
Lysis of adhesions may be billed separately only if extensive and clearly documented as a distinct service - append modifier 59 if appropriate.
This procedure carries a 90-day global period, which includes typical postoperative care.

Reimbursement and Coverage Considerations For CPT Code 58546

There are different reimbursement amounts for CPT 58546 depending on the place of service and the policy of the health insurance provider.

Average Medicare payment (non-facility): Around $1,150–$1,400
Facility (ASC/hospital): Reimbursement is adjusted due to facility fees.
Global period: 90 days
Multiple surgery reduction – Applies when surgery occurs in conjunction with other major surgeries.

Some commercial insurers follow the CMS guideline and have additional prior authorization requirements for laparoscopic myomectomy. Confirm coverage and record medical necessity (imaging, symptoms, uterine size, fibroids).

Modifier Use For CPT Code 58546

The scope and responsibility for care is communicated through appropriate modifiers:

Modifier 22 – Increased procedural services (when extensive adhesiolysis or unusually long surgery time is required).
Modifier 51 – Multiple procedures in the same session.
Modifier 54 – Surgical care only.
Modifier 55 – Postoperative management only.
Modifier 59 – Distinct procedural service (if separate laparoscopic work performed).

Avoid modifier overuse - improper application can delay or reduce payment.

Documentation Requirements For CPT Code 58546

Operative notes provide detailed information, helping to ensure proper billing and audit. Which may include:

Indication (clinical) means a condition for which treatment is necessary and that is indicated by the presence of symptoms.
The size, number and weight of fibroids removed.
Approach (laparoscopic, with or without morcellation).
Technique for hemostasis and uterine wall repair.
Estimated blood loss and any intraoperative complications.
Postoperative plan and recovery details.

This level of specificity validates the use of CPT 58546 over simpler codes and provides defense during payer audits or reviews.

Example Scenarios

Scenario 1 – Large Multiple Fibroids Removed

A woman is complaining of menorrhagia and pelvic pressure. A laparoscopy is performed, where 7 fibroids weighing 320 grams are removed. The uterus is reconstructed and all the incisions closed laparoscopically.

→ Bill CPT 58546.

Scenario 2 – Infertility Related to Uterine Fibroids

A 34-year-old woman undergoing infertility workup is found to have multiple subserosal and intramural fibroids. The surgeon performs a laparoscopic myomectomy, excising six fibroids totaling 280 grams.

→ Report CPT 58546 (meets both number and weight criteria).

Scenario 3 – Extensive Laparoscopic Myomectomy with Adhesiolysis

During a laparoscopic myomectomy, the provider performs prolonged adhesiolysis unrelated to the fibroid dissection.

→ CPT 58546 for adhesiolysis is reported with modifier 59 if there is documentation of separate medical necessity.

The following examples illustrate the point that procedural complexity and documentation dictate the appropriate bill.

Why Choose BillingFreedom for OBGYN Billing

Surgical procedures like laparoscopic myomectomy require advanced coding accuracy and strict payer compliance to avoid denials. That’s why many practices trust BillingFreedom for their OBGYN medical billing services.

Our certified team understands the coding nuances for fibroid surgeries and other gynecologic procedures, ensuring that your claims are clean, compliant, and optimized for reimbursement.

With BillingFreedom’s OBGYN medical billing services, you gain:

Expert claim review and submission.
Reduced denial rates and faster payment cycles.
Up-to-date compliance with CMS and AAPC coding rules.
Complete transparency and dedicated revenue cycle support.

For more details about our exceptional OB/GYN billing services, please don't hesitate to contact us via email at info@billingfreedom.com or call us at +1 (855) 415-3472. Your financial tranquility is our priority!