CPT code 59151 – Laparoscopic ectopic pregnancy with salpingectomy

Key takeaways

CPT code 59151 covers laparoscopic treatment of an ectopic pregnancy when the surgeon removes the fallopian tube, the ovary, or both.

Tube removal is the only difference from CPT 59150. Without a documented salpingectomy or oophorectomy, the claim is downcoded to 59150.

A 90-day global surgical period applies, and NCCI bundles 58661 into 59151 when ectopic pregnancy is the indication.

Tubal and ovarian ectopic diagnoses are billable only with the sixth-character laterality digit, such as O00.102 for a left tubal pregnancy.

Pabau’s claims management software scrubs each 59151 claim for missing or invalid details before it reaches the payer.

CPT code 59151: Official descriptor and procedure overview

CPT code 59151 is the code for laparoscopic treatment of an ectopic pregnancy with salpingectomy and/or oophorectomy.

Report it when the surgeon removes the affected fallopian tube, the ovary, or both through a laparoscope. It sits in the Maternity Care and Delivery range (59000-59899) of the Surgery chapter, maintained by the AMA CPT Editorial Panel.

In the procedure, the surgeon establishes laparoscopic access and finds the implantation site, most often the fallopian tube. The affected tube is then excised. When the ovary on the same side is also involved or at risk, the oophorectomy happens in the same session under the same code. Neither component is billed separately.

CPT code 59151 vs CPT 59150: Which code applies?

CPT 59150 applies when the fallopian tube is preserved, and CPT code 59151 applies when it is removed. Tube-sparing approaches include salpingostomy and fimbrial expression. A salpingectomy, with or without oophorectomy, always routes to 59151.

Intraoperative conversion: A surgeon may start a salpingostomy and convert to a salpingectomy during the case. The final operative report then has to describe the salpingectomy. Coders who work from pre-op documentation often submit 59150 in these cases, when 59151 is correct.

Related codes in the ectopic pregnancy family

Several codes border CPT code 59151 and are often confused with it on claims. The table below sets out the ectopic pregnancy codes alongside 58661, the general laparoscopic salpingectomy code.

Key rule: When ectopic pregnancy is the operative indication, report 59150 or 59151 and leave 58661 off the claim. Billing 58661 alongside 59151 triggers an NCCI bundling edit. Even billed alone for an ectopic case, it can draw a denial or an audit flag.

Put together, the choice turns on three facts: the indication, the approach, and whether tissue came out. The chart below sets those decisions out in order.

ICD-10 diagnosis codes to pair with CPT 59151

Every CPT code 59151 claim needs an ectopic pregnancy diagnosis from ICD-10-CM category O00 as the primary diagnosis. Tubal pregnancy, subcategory O00.1, is the most common site. Tubal and ovarian codes are billable only at the sixth character, which records the side.

Laterality: O00.10, O00.11, O00.20 and O00.21 are non-billable parent codes. A tubal or ovarian claim needs the sixth character, which is 1 for right, 2 for left and 9 for unspecified. A claim that stops at the parent code is denied, so take the side from the operative note before you code.

Abdominal (O00.0x) and other-site (O00.8x) codes carry no laterality digit. Check the current CDC/NCHS ICD-10-CM tabular each October, when the annual update takes effect.

Medicare and payer reimbursement for CPT code 59151

CPT code 59151 reimbursement rates are set annually through the CMS Medicare Physician Fee Schedule. The procedure carries a 90-day global period (indicator 090), which affects how pre-operative and post-operative services are billed.

Ectopic pregnancy surgery almost always happens in a hospital or ASC, so the physician is paid at the facility rate. The hospital or ASC bills its own facility fee separately.

Work RVU values and national payment amounts change with each calendar year’s MPFS final rule. The FastRVU lookup tool returns the current-year work, practice expense and malpractice RVUs for CPT 59151. It also applies the geographic adjustment (GPCI) for your locality.

Documentation requirements for CPT code 59151

The operative report is the billing anchor for CPT code 59151. One missing element can force a downcode to 59150 or a denial outright. The report and its supporting records should cover each of the following.

• Confirmed ectopic pregnancy diagnosis: Pre-operative imaging (transvaginal ultrasound), beta-hCG trending, and intraoperative confirmation of the implantation site. The operative note must name the site and side, such as the left fallopian tube ampulla. That side sets the ICD-10 laterality digit.
• Laparoscopic approach documented: Trocar placement, pneumoperitoneum, and laparoscopic visualization must be recorded. An open approach would route to 59120 or 59121 instead.
• Salpingectomy explicitly stated: The report must state that the fallopian tube was excised and removed, beyond the incision of a salpingostomy. Vague language such as “the tube was treated” does not support 59151.
• Oophorectomy documented (if performed): The report must state any ovary removal and its reason, such as ovarian involvement or a hemorrhagic corpus luteum.
• Pathology specimen submitted: The excised tube (and ovary, if applicable) should be sent to pathology. Pathology confirmation of ectopic tissue strengthens the medical necessity record.
• Attending surgeon attestation: The operative report must carry the attending surgeon’s signature. Resident-only notes without attending co-signature are frequently flagged during post-payment audit.

Downcode trigger: A salpingostomy opens the tube, removes the pregnancy tissue, and leaves the tube in place. If that is what the operative note describes, the correct code is 59150, whatever was submitted. Coders need to read the full operative note as well as the procedure heading.

Prior authorization requirements for CPT 59151

Most payers don’t require prior authorization for CPT code 59151 when the surgery is an emergency, such as a ruptured ectopic pregnancy. Payers widely treat ectopic pregnancy as an obstetric emergency, and their emergency exceptions usually waive the requirement.

Some commercial plans still require authorization for elective laparoscopic surgery, even in obstetric cases. These situations may call for authorization or a retroactive review:

• Non-emergent presentations: An asymptomatic ectopic diagnosed incidentally on ultrasound and treated electively may fall outside automatic emergency-waiver language in some plan policies.
• Retroactive authorization: When an emergency precluded obtaining prior auth, most payers accept a retroactive request with the emergency operative documentation attached. Submit within the plan’s timely filing window (typically 30-90 days from date of service).
• Medicaid managed care plans: Individual state Medicaid managed care organizations vary in their prior auth requirements for laparoscopic OB surgery. Verify before the procedure whenever the clinical situation allows.

Payer policies vary and change often. Treat the emergency waiver as a common pattern and check the specific plan’s policy for 59151 whenever timing allows.

Common modifiers used with CPT code 59151

Modifier selection for CPT code 59151 affects payment and audit risk. The table below covers the modifiers coders encounter most often on ectopic pregnancy surgery claims. Consult the AAPC CPT modifier guide for the full modifier set.

Modifier -LT/-RT: Some payers request laterality modifiers to identify which tube was involved. These are not universally required for 59151 but should be applied when payer-specific instructions indicate them. The operative report’s laterality documentation must match.

Common claim denial reasons and how to avoid them

CPT code 59151 denials cluster around a small set of repeating errors. A denial management workflow that catches them before submission costs far less time than an appeal. When a claim does come back, decoding denial codes on the remittance tells you which error the payer found.

• Wrong code selected: 59150 submitted when salpingectomy was performed (or vice versa). Root cause: Coding from pre-op orders rather than the final operative note. Fix: Mandate a final operative note review before code assignment on every ectopic case.
• Missing or mismatched ICD-10: The O00 code is missing, doesn’t match the operative site, or stops at a non-billable parent code such as O00.10. Fix: Code the site and side from the intraoperative finding in the operative report.
• Incomplete operative report: Salpingectomy is not explicitly stated, or pathology submission is undocumented. The payer downcodes to 59150. Fix: Use a clean claim submission checklist that flags missing operative note elements before billing.
• Unbundling: Salpingectomy (58661) billed separately alongside 59151. This triggers an NCCI edit denial. Fix: 58661 is included in 59151 when the indication is ectopic pregnancy, so never bill both.
• Diagnostic laparoscopy billed separately: CPT 49320 is not separately billable when the diagnostic look is part of the same session as 59151. Remove it from claims where the scope only located the ectopic before treatment.
• Global period violations: Related E/M visits billed without a modifier during the 90-day post-operative period. Fix: Flag the global window in the patient record and use modifiers -24 (unrelated E/M during global) or -78/-79 (related/unrelated return to OR) as appropriate.
• Incorrect place of service: 59151 submitted with an office POS code. The procedure happens in a hospital or ASC, and an office POS can trigger an automatic edit. Fix: Verify POS matches the facility where the procedure occurred.

Bundling rules: What not to bill separately with CPT 59151

NCCI (National Correct Coding Initiative) edits define what is included in CPT code 59151 and cannot be billed alongside it. CMS maintains these edits and updates them quarterly, so work from the current edit table each time.

For detailed guidance on medical billing compliance around NCCI edits, review the CMS NCCI Policy Manual for Medicare Services.

Bundled into 59151 (do not bill separately):

• 58661 (laparoscopic salpingectomy / oophorectomy): Included when the indication is ectopic pregnancy. Billing 58661 alongside 59151 for the same session triggers an NCCI column-one/column-two edit.
• 49320 (diagnostic laparoscopy): Included when performed as the initial diagnostic step before treating the ectopic in the same session.
• Ipsilateral oophorectomy: If the ovary on the same side as the ectopic is removed, that oophorectomy is captured within 59151 and is not separately billable.

May be billed separately (with correct documentation and modifiers):

• Contralateral salpingectomy or oophorectomy: A procedure on the opposite side for a distinct indication may be reported separately with modifier -51 and supporting documentation. One example is a prophylactic contralateral salpingectomy for ovarian cancer risk reduction.
• Unrelated same-session procedures: A procedure for a diagnosis unrelated to the ectopic pregnancy may be billed separately. It needs modifier -51 and its own ICD-10 code supporting medical necessity.
• Post-operative complications requiring return to OR: Use modifier -78 for the return-to-OR procedure, which is billed separately even within the 90-day global window.

Global surgical period for CPT 59151

CPT code 59151 carries a 90-day global surgical period under CMS policy. The global period begins the day before surgery and runs for 90 days post-operatively. Related evaluation and management services, routine wound checks, and follow-up visits in this window are part of the global payment. They can’t be billed separately.

Knowing what falls inside and outside the global period prevents both underbilling and denial exposure. A superbill for surgical procedures can flag the global window’s end date when the claim goes out. Billing staff can then see which post-op visits are included and which are separately payable.

How claims management software reduces CPT 59151 denials

A 59151 denial usually starts with something the operative note or the claim left out. It then surfaces weeks later on the remittance, after the coder has moved on to other cases.

Pabau, the practice management platform we build, raises the claim from the invoice your team already creates. Its claims management tools scrub each claim for missing or invalid details before it leaves the system. A claim with a missing or invalid detail is marked as needing action, with guidance on the fix.

US claims go out through the Claim.MD clearinghouse, which reaches thousands of US payers. Eligibility checks run before the visit, and claim status and electronic remittance advice come back to the same record. A rejected claim shows as needing action on the day it bounces.

Catch 59151 claim errors before the payer does

Pabau scrubs each claim for missing or invalid details before it leaves the system, then tracks it through to remittance. Your team fixes coding errors while they are still cheap to fix.

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Conclusion

A 59151 claim is paid or denied on the strength of two lines in the operative report. One says the tube came out. The other names the implantation site and side, which sets the O00 code. Get both written on the day of surgery and the coding decisions that follow are straightforward.

The trade-off is coder time. Reading the full operative note on every ectopic case takes minutes, while recovering a denied surgical claim can take weeks. Book a demo to see how Pabau checks each OB-GYN claim before it reaches the payer.

Continue your research

Removing a tube through an open incision? CPT code 58700 explains how to bill an open salpingectomy outside the ectopic code family.

Coding a postpartum curettage from the same code group? CPT code 59160 sets out how to bill uterine curettage after delivery.

Frequently asked questions