CPT code 58661: Laparoscopic removal of adnexal structures

Key takeaways

CPT code 58661 describes laparoscopic removal of adnexal structures, meaning partial or total oophorectomy and/or salpingectomy.

Bilateral procedures take modifier 50 with most payers, and Medicare’s bilateral surgery indicator of 1 pays 150% of the single procedure rate.

Payers deny 58661 claims most often over benefit classification, missing modifiers, or thin operative report documentation.

What the surgeon did to the tube or ovary decides the code, not the diagnosis that sent the patient to surgery.

Pabau’s claims management software integrates with Claim.MD to validate 58661 claims, flag missing modifiers, and post remittances automatically.

CPT code 58661 covers laparoscopic surgical removal of adnexal structures, meaning partial or total oophorectomy and/or salpingectomy. The American Medical Association (AMA) publishes and maintains the CPT codebook. Its official descriptor reads: Laparoscopy, surgical; with removal of adnexal structures (partial or total oophorectomy and/or salpingectomy).

The code sits in the surgical laparoscopy subsection of the Female Genital System, which runs from 58660 to 58679. It applies to any combination of tube and ovary removal performed through a laparoscopic approach.

The phrase “and/or” in the descriptor matters. A coder can apply 58661 when the surgeon removes only the fallopian tube, only the ovary, or both structures together. The approach has to be laparoscopic in every case. The most common use is bilateral salpingectomy for sterilization. The code also covers removal for ovarian cysts, ectopic pregnancy, adnexal torsion, and pelvic malignancy staging.

Bilateral salpingectomy and CPT 58661: Coding scenarios

Bilateral procedures create the most confusion when billing CPT code 58661. The core question is whether to append modifier 50, or whether the code is already considered inherently bilateral.

CMS Physician Fee Schedule guidance assigns CPT 58661 a bilateral surgery indicator of 1. The descriptor is therefore not inherently bilateral. When both sides are treated, modifier 50 typically applies and Medicare pays 150% of the single procedure rate rather than 200%. Commercial payers set their own bilateral surgery rules, so check each policy before submitting the claim.

One billing mistake shows up again and again. A biller submits 58661 twice on the same claim without modifier 50, expecting payment for two units. Most payers deny or reduce the second line. Use modifier 50 on a single line, or RT and LT on two separate lines, depending on what the payer wants.

CPT 58661 modifiers: When and how to use them

Modifier selection is where many 58661 claims break down. Four modifiers apply most often to this code, and each carries its own documentation requirement.

Modifier 22 deserves particular care. Payers scrutinize it heavily, and attaching it without a compelling operative note narrative is a fast route to denial. The note has to describe the specific anatomical findings, such as stage III endometriosis obliterating the cul-de-sac or dense bowel adhesions. It also has to explain why the case exceeded typical complexity. A brief mention of “difficult case” does not meet the threshold.

Medicare reimbursement and fee schedule for CPT 58661 (2026)

Reimbursement for CPT code 58661 varies by place of service, geographic location, and payer type. CMS sets Medicare rates annually through the Physician Fee Schedule. Verify current figures for your own locality with the CMS Physician Fee Schedule lookup tool before billing. The figures below are 2026 national averages, given for reference only.

Geographic adjustment moves this figure more than most coders expect. A practice in San Francisco is paid more than one in rural Mississippi for the same procedure. Medicare applies Geographic Practice Cost Indices to each component RVU. Practices in high-cost urban markets often underestimate how far their negotiated commercial rates should sit above the national average.

Practice management software like Pabau routes 58661 claims through Claim.MD, its clearinghouse partner, to thousands of US payers. Eligibility verification runs in real time before submission, which lowers the risk of sending the claim into the wrong benefit bucket. That is a common denial trigger for this code, and it is covered below.

ICD-10 codes used with CPT 58661

Every 58661 claim needs a paired ICD-10-CM diagnosis code that demonstrates medical necessity. The diagnosis has to match the clinical indication documented in the operative report. The table below lists the codes most often paired with 58661, based on the procedure’s typical clinical applications.

Diagnosis specificity carries extra weight on this code. Salpingectomy performed before IVF often falls in the same encounter as the fertility services. Coders pairing it with IVF CPT codes should confirm that each procedure has its own documented indication.

CPT 58661 vs 58662 and related laparoscopic codes

Four codes sit closest to 58661 in the CPT codebook, and picking the wrong one is a frequent coding error. What the surgeon did to the tube or ovary decides the code, not the diagnosis. The chart below maps each operative note finding to the code it supports.

The most frequent mix-up is 58661 versus 58662. If the ovary is excised, 58661 applies. If an ovarian lesion is excised but the ovary itself stays in place, 58662 is correct. Reading the operative note for the phrase “ovary removed” rather than “lesion excised from ovary” settles almost every case.

The same logic separates 58661 from the sterilization codes. 58670 and 58671 cover methods that leave the tube in place but render it non-functional. Once the tube is physically removed, 58661 is the right code.

Is CPT 58661 a preventive code? ACA coverage explained

CPT 58661 can be a preventive code, but only when the procedure is voluntary sterilization and the payer classifies it that way. The Affordable Care Act mandates sterilization as a preventive service for women, so it should be covered with no cost-share when billed as preventive. Many payers still route 58661 through their surgical benefit instead. Deductibles and co-insurance then land on the patient, and the provider can face different documentation requirements.

The National Women’s Law Center has documented repeated instances of insurers applying cost-sharing to sterilization procedures incorrectly. According to AMA coding resources, the CPT code itself does not decide the benefit bucket. Payer classification policy does. Practices billing bilateral salpingectomy for sterilization with Z30.2 should:

• Include Z30.2 as the primary diagnosis code to signal preventive intent
• Verify the payer’s preventive sterilization policy before scheduling the procedure
• Document in the office note that the procedure is being performed for sterilization purposes
• Prepare an appeal template citing the HRSA Women’s Preventive Services Guidelines, in case the claim is processed through the surgical benefit
• Check state Medicaid policies separately, since programs such as NC Medicaid set their own prior authorization and consent requirements

When the procedure is medically indicated for another reason, the surgical benefit classification is correct. Ectopic pregnancy and ovarian cysts sit in that group, and the preventive rules do not apply. The clinical indication in the operative report decides which pathway the claim belongs in.

Documentation requirements for CPT 58661 claims

Thin documentation is the second most common reason 58661 claims are denied, after benefit classification disputes. The operative report has to carry specific elements for the claim to survive payer review. A report saying “laparoscopic bilateral salpingectomy performed without complications” will usually get paid the first time, then get flagged on audit.

Required operative report elements for 58661:

• Approach confirmed: explicit statement that laparoscopic technique was used (not converted to open)
• Structures removed: identify each structure removed (right tube, left tube, right ovary, left ovary) and whether removal was partial or total
• Laterality: documented for unilateral procedures to support RT/LT modifier use
• Clinical indication: the reason for surgery stated clearly (sterilization request, ovarian cyst diagnosis, ectopic pregnancy)
• Concurrent procedures: any additional procedure performed in the same session documented separately, to support each extra CPT code billed
• Pathology disposition: whether specimens were sent to pathology, and the laterality of each specimen

Practices that use a structured operative note template for laparoscopic adnexal procedures catch missing elements before claims go out. Connecting those templates to a claims management software workflow that flags incomplete fields is the most reliable way to prevent documentation denials on 58661.

Pabau’s integration with Claim.MD also cross-references the submitted diagnosis codes against the procedure code before transmission. Mismatched pairings that would otherwise come back as a medical necessity denial get caught while the claim can still be corrected.

Common denial reasons for CPT 58661 and how to avoid them

58661 denial patterns are predictable. The same four or five rejection triggers repeat across OB/GYN practices, which makes them preventable with the right pre-submission workflow.

When a claim is denied despite proper documentation, the appeal starts with the Explanation of Benefits and the reason code printed on the remittance. Mapping each rejection to the standard denial codes shows whether a cluster is a payer-side processing error or an internal documentation problem. Each reason code then points to its own appeal strategy, so the root cause can be fixed rather than re-argued every month.

How practice management software supports accurate 58661 billing

Practice management software supports accurate 58661 billing by closing the handoffs where the claim usually breaks. Documentation, modifier, and benefit-classification requirements for this code create several failure points between the operating room and the payer. Every pass between surgeon, coder, biller, and clearinghouse is a chance for an error that surfaces as a denial weeks later.

Pabau’s integration with Claim.MD connects the billing workflow to a clearinghouse that supports CMS-1500 and 837P claim formats. It also carries real-time eligibility verification and automated ERA/835 remittance posting. For 58661 specifically, that means:

• Eligibility checks at scheduling confirm whether the sterilization will process as preventive or surgical on that patient’s plan
• Claim scrubbing flags missing laterality modifiers and ICD-10 mismatches before transmission
• Remittance data flows back automatically, so denial reason codes appear in the same record as the original claim

For an OB/GYN practice running a steady volume of laparoscopic cases, the payoff is fewer reworked claims. Errors get corrected before the payer processes them, rather than after. Denials get caught while the operative note is still fresh and the coder can still act on it.

OB/GYN billing shouldn’t cost you revenue

Pabau integrates with Claim.MD to validate CPT 58661 claims before they reach the payer, flag missing modifiers, and automate remittance posting. See how OB/GYN practices use Pabau to reduce denials and speed up reimbursement.

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Conclusion

CPT code 58661 covers a wide range of laparoscopic adnexal procedures, from bilateral salpingectomy for sterilization to oophorectomy for malignancy. That flexibility is also the billing risk. Without precise documentation, the right modifier, and a verified benefit classification, the claim lands in the wrong bucket or gets denied outright.

The decision worth internalizing is small: removal means 58661, and laterality sets the modifier. The rest follows from getting those two facts out of the operative note before the claim is built. The appeal template and the payer policy check both depend on them.

Pabau’s claims management platform builds that check into the submission workflow, with eligibility verification, claim scrubbing, and automated remittance posting in one place. Book a demo to see how OB/GYN practices keep 58661 claims out of the appeals queue.

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