CPT code 32674 – VATS mediastinal lymphadenectomy

Key takeaways

CPT Code 32674 reports a VATS mediastinal and regional lymphadenectomy as an add-on to an eligible primary procedure, such as 32663 for a VATS lobectomy.

It carries a ZZZ global period, is never reported alone and never takes modifier 51.

Missing IASLC station detail in the operative note is a common audit finding, so the note should name every station dissected.

The 2026 national Medicare rate is $195.40 (5.85 total RVUs at the $33.4009 conversion factor), before GPCI adjustment.

Pabau, our practice management platform, submits CMS-1500 claims through Claim.MD and tracks each claim’s status and remittance.

CPT Code 32674: Official description and classification

CPT Code 32674 is the add-on code for a thoracoscopic (VATS) mediastinal and regional lymphadenectomy, reported with an eligible primary procedure on the same claim. The American Medical Association descriptor reads “Thoracoscopy, surgical; with mediastinal and regional lymphadenectomy (list separately in addition to code for primary procedure).” As a result, 32674 is never the lead code on a claim.

First, the table below summarizes the attributes coders need before building a claim.

Is CPT Code 32674 an add-on code?

Yes. CPT Code 32674 is a designated add-on code, marked in the AMA CPT book with a plus (+) symbol. Its parenthetical says to “list separately in addition to code for primary procedure.” As a result, four billing rules follow.

• Cannot be reported alone. A claim submitting only 32674 will be denied. Therefore, the primary VATS procedure code must appear on the same claim.
• No modifier 51. The AMA exempts all add-on codes from the multiple-procedure modifier. However, coders often append modifier 51 to 32674, which triggers a denial or downcoding.
• ZZZ global period. 32674 has no global period of its own, because the service is part of the primary procedure’s global package. As a result, it generates no separate postoperative period.
• Eligible primaries and NCCI edits. First, CPT parentheticals define the eligible primary codes. Also, National Correct Coding Initiative (NCCI) and CMS add-on code edits are updated quarterly, so verify them before submitting.

Eligible primary procedure codes for CPT Code 32674

The CPT parenthetical for 32674 lists the eligible primary codes, and lung resections make up most of it, in both VATS and open forms. A VATS lobectomy, for example, is reported with 32663 as the primary and 32674 as the add-on. However, the AMA can revise the parenthetical each year, so check the current CPT edition before you build the claim.

CPT 32674 vs. similar thoracoscopy codes

The 32671-32674 code range covers several distinct thoracoscopic procedures, and confusing them leads to denials. In addition, a needle biopsy is a different service: it is reported with 32408, which replaced 32405 in 2021. Finally, the table below shows where each code’s scope differs from 32674.

Overall, those distinctions reduce to three checks, run in order, before 32674 goes on the claim.

Modifiers for CPT Code 32674

Modifier selection for an add-on code is tighter than for standalone procedures. For that reason, the table below covers each modifier a thoracic biller is likely to meet with 32674. It gives the correct usage and the denial risk of getting it wrong.

Medicare reimbursement under the 2026 fee schedule

As an add-on code, CPT Code 32674 is paid only when the primary VATS procedure is separately payable by Medicare. The values below come from the 2026 Medicare Physician Fee Schedule (MPFS) relative value file, before geographic practice cost index (GPCI) adjustment. Then confirm local figures using the CMS MPFS lookup tool or the FastRVU 2026 RVU lookup for your locality.

Commercial payer payment for CPT Code 32674 varies by payer contract and plan. In fact, some commercial payers bundle the lymphadenectomy into the primary resection code under their own fee schedule rules, regardless of NCCI edit status. Therefore, review each payer’s contract terms for VATS add-on code payment policy.

In addition, practices using Pabau can submit claims through Claim.MD, our US clearinghouse partner, which sends CMS-1500 claims and runs real-time eligibility checks.

When building the claim, generating a superbill that links the primary code and 32674 helps. As a result, it keeps the add-on from going out without its parent on the same date of service.

Payer requirements and prior authorization

Most payers do not require a separate prior authorization for CPT Code 32674 when the primary VATS procedure is already authorized. In other words, payers treat the add-on as part of the surgical session, not a separate service needing its own review. That said, authorization policies differ by payer and plan, so confirm with each payer before assuming coverage extends automatically.

However, payers that do review medical necessity for 32674 typically look for the following before accepting the claim.

• Pathology or clinical suspicion of malignancy. Mediastinal lymphadenectomy is used mainly for lung cancer staging and treatment. Therefore, the ICD-10 diagnosis code on the claim must reflect a confirmed or suspected thoracic malignancy.
• Pre-operative imaging. A CT or PET-CT supporting the indication for lymph node dissection is expected in the medical record. In fact, payers may request this during a post-payment audit even if they do not require it for pre-authorization.
• Clear staging reason. The operative note must establish why systematic nodal dissection was performed, not simply sampled. For example, “We performed a systematic mediastinal lymphadenectomy for staging purposes” with named stations is the target language.
• Surgeon credentials. Some payers restrict VATS lymphadenectomy codes to board-certified thoracic surgeons. Therefore, verify credentialing requirements per payer contract.

Common denial reasons for CPT Code 32674 and how to appeal

Five denial patterns recur on 32674 claims, and each has a specific appeal path. Therefore, a solid denial management workflow can resolve them at first appeal when the correct records go in upfront.

1. Billed without a primary VATS code. The add-on rule is absolute: No primary code, no payment. To appeal, resubmit with the correct primary procedure code (e.g. 32663 or 32669) on the same date of service. Then confirm the clearinghouse sent both codes together.
2. Payer bundled 32674 into the primary procedure. Some commercial payers apply their own bundling edits that go beyond NCCI. First, appeal with a copy of the NCCI edit table showing the pairing is payable. Also add the operative note confirming the lymphadenectomy was a distinct service. In addition, modifier 59 may be required per that payer’s policy.
3. Modifier 51 added in error. Remove modifier 51 and resubmit. Also include a brief appeal letter noting that AMA CPT guidelines classify 32674 as an add-on code exempt from modifier 51 under the multiple-procedure rules.
4. Missing lymph node stations in the operative note. Because this is a frequent audit trigger, the operative note must name each dissected station by IASLC number or anatomical label. “Lymph nodes were removed” is not sufficient. To appeal, send an amended operative note or surgeon statement that names each station dissected.
5. ICD-10 diagnosis mismatch. The diagnosis code must support medical necessity for lymphadenectomy. For example, a benign neoplasm of the lung (D14.3x) paired with 32674 will usually be denied. To appeal, confirm that the correct malignancy code (C34.x or C77.x) was submitted. However, if the indication is appropriate despite a non-malignant diagnosis, send clinical documentation supporting medical necessity.

Our guide to denial codes decodes the CARC reason codes your payer returns on the remittance advice. Then match each one to the appeal path above.

Documentation that supports the code

Incomplete operative note documentation is a common audit finding on 32674 claims. In fact, the IASLC lymph node map defines 14 numbered mediastinal and regional stations. Therefore, an operative note that names each dissected station by number gives payers and auditors no room to dispute the work performed.

For this reason, a clean claim submission for 32674 depends on the operative note capturing every element below before the claim is built.

Practices subject to Recovery Audit Contractor (RAC) review should reconcile node counts between the operative note and the pathology report before billing. In addition, a billing compliance review of VATS operative note templates at least once a year reduces this exposure.

ICD-10 diagnosis codes commonly paired with CPT Code 32674

The diagnosis code on the claim must establish medical necessity for mediastinal lymphadenectomy. Because lung cancer is the main clinical driver, the ICD-10-CM codes below cover the presentations most often billed alongside 32674.

Payers expect the primary malignancy code to be listed first, with nodal involvement and any secondary diagnoses following. For example, do not sequence a symptom code (R04.2) as the primary diagnosis on a 32674 claim. Otherwise, the payer will flag the claim for medical necessity review.

How Pabau supports 32674 claims and documentation

The 32674 errors in this guide start before the claim is built: a primary code left off, or an operative note without named stations. For that reason, Pabau keeps the clinical note, the invoice and the claim in the same patient record, so the biller works from the documentation the surgeon signed.

Configurable clinical note templates let you add a field for each IASLC station dissected, so stations get recorded at the point of care. The biller then builds the CMS-1500 claim from the invoice, with the primary code and 32674 on the same claim.

Our claims management software sends each claim through Claim.MD after a real-time eligibility check. Claim status and remittances flow back into Pabau, so a denied 32674 claim stays visible until someone works the appeal.

Submit and track every 32674 claim in one place

Pabau submits CMS-1500 claims through Claim.MD after a real-time eligibility check, then tracks each claim’s status and remittance. Your billing team can follow every 32674 claim from submission to payment.

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Conclusion

Treat 32674 as a documentation code first and a billing code second. When the operative note names each station dissected and the primary resection sits on the same claim, the add-on pays. However, when either is missing, the claim enters an appeal cycle that an amended note may not rescue.

Build station fields into your VATS operative note template now, and recheck the CPT parenthetical and NCCI edits each quarter. After all, a few minutes of station-level dictation per case protects a $195 national add-on payment. Finally, book a demo to see how Pabau handles claim submission and tracking for your practice.

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