CPT code 57135 – Vaginal cyst or tumor excision

Key takeaways

CPT 57135 covers complete excision of a discrete cyst or benign tumor from the vaginal wall, not Bartholin gland procedures or septum resections.

The operative note must document the site, size, excision technique, completeness and specimen handling to support the code.

The codes most often confused with 57135 are 57130 (vaginal septum), 57200 (suture of a vaginal injury) and 57100 or 57105 (biopsy).

57135 carries a 10-day global period and 2026 Medicare total RVUs of 5.04 in a facility and 7.28 in an office.

Pabau’s claims management software pre-fills claims from the patient record, offers ICD-10-CM and CPT lookup libraries, and checks required claim fields before submission.

CPT code 57135 covers complete removal of a vaginal wall mass

CPT code 57135 is defined by the American Medical Association as “Excision of vaginal cyst or tumor.” You report it when the surgeon removes a discrete cyst or benign mass from the vaginal wall in its entirety.

It sits in the Vagina subsection (57000-57426) of the Female Genital System section, which spans codes 56405-58999.

The procedure itself is short. The surgeon identifies the mass, dissects it free from the surrounding tissue, removes it whole and closes the defect. Sending the specimen to pathology is common, but it isn’t a condition for reporting the code.

What 57135 includes, and the look-alikes it doesn’t

The descriptor says “cyst or tumor,” which takes in a range of benign vaginal wall masses. The boundary matters because each look-alike procedure has a code of its own.

Masses that belong under 57135

• Vaginal inclusion cysts (most common, formed from entrapped epithelium during prior surgery or repair)
• Gartner duct cysts (mesonephric duct remnants arising on the anterolateral vaginal wall)
• Mullerian duct cysts
• Benign vaginal wall tumors (lipomas, fibromas, hemangiomas of vaginal wall origin)
• Epidermal or sebaceous cysts of the vaginal wall

Procedures that need a different code

• Bartholin gland cysts or abscesses: These have their own codes. Use 56440 for marsupialization, 56420 for incision and drainage of a Bartholin abscess, and 56740 for excision of a Bartholin gland or cyst. Bartholin glands sit at the vaginal opening, so they’re coded in the vulva range.
• Vaginal septum resection: Use CPT 57130 instead. A septum is a fibrous or fibromuscular band, not a discrete cyst or tumor.
• Biopsy without excision: If the surgeon sampled tissue without removing the mass, use 57100 for a simple biopsy of vaginal mucosa. Use 57105 for an extensive biopsy requiring suture (including cyst). Don’t confuse either with 57106, which is a partial vaginectomy, the removal of part of the vaginal wall.
• Colporrhaphy: Use CPT 57200 when the surgeon sutured a nonobstetrical vaginal injury. Closing a biopsy site is part of the biopsy, not an excision.
• Cervical or vulvar cysts: Different anatomical sites take codes from their own subsections.

The quickest way to choose between them is to read what the note says was removed or repaired. The table below matches each finding to its code.

The operative note has to prove a complete excision

Every 57135 claim rests on the operative note. Payers audit the code because the descriptor is broad, and a thin note leaves room to argue that another code applies. A clean claim submission for 57135 needs the note to confirm each of the following.

• Preoperative diagnosis: The clinical reason for the procedure, such as a symptomatic vaginal cyst causing dyspareunia or urinary pressure. This establishes medical necessity and must pair with an appropriate ICD-10 code.
• Anatomical location: The site on the vaginal wall (anterior, posterior, lateral) and its relation to nearby structures. Gartner duct cysts typically sit on the anterolateral wall, while inclusion cysts tend to form at sites of earlier surgery or repair.
• Size of the cyst or tumor: Record the size in centimeters. Some payers use it to judge medical necessity.
• Technique of excision: Describe the incision, dissection and removal. “Cyst was excised” on its own is too thin to support the code.
• Completeness: Use wording such as “complete excision” or “cyst removed in its entirety.” If the cyst ruptured during removal, note that the wall was removed too.
• Specimen handling: State whether the specimen went to pathology. When it did, the record should hold the matching pathology report.
• Closure: Type of closure (absorbable suture, mucosa reapproximated, etc.).

Then pair the note with the ICD-10 code. Medical billing compliance requires the diagnosis to show why surgery was needed, not just that a mass was found.

How a 57135 claim moves from the procedure to payment

Once the note is right, the claim follows a predictable path. Here’s how it usually runs in an ob-gyn practice.

1. Before the procedure. The front desk checks eligibility and, where the plan requires it, obtains prior authorization for the planned excision.
2. Day of surgery. The surgeon documents the site, size, technique, completeness and specimen in the operative note.
3. Coding. The coder confirms a discrete mass was removed whole and assigns 57135 with the supporting ICD-10 code. Modifiers are added if another procedure was done in the same session.
4. Pathology. Many practices hold the claim until the pathology report is back. That way a confirmed benign tumor is coded as D28.1 rather than as a cyst.
5. Claim build. The claim goes out on the CMS-1500 or its electronic 837P equivalent. The place of service decides whether the facility or non-facility rate applies.
6. After payment. The 10-day global period covers the day of the procedure and the 10 days that follow. Routine follow-up visits in that window are part of the payment and aren’t billed separately.

ICD-10 codes that support medical necessity for 57135

The diagnosis code has to justify surgical excision. These are the codes most often paired with 57135.

ICD-10-CM codes update every October 1. Check them against the version in effect on the date of service.

57135 vs. 57130: A septum is not a cyst

CPT 57130 is excision of a vaginal septum, a different structure entirely. A septum is a fibromuscular band or membrane that runs lengthwise or across the vaginal canal. A cyst is a discrete fluid-filled sac in the vaginal wall. Coders mix them up when the note says something vague like “vaginal lesion removed.”

57135 vs. 57200: Colporrhaphy repairs an injury, not a mass

CPT 57200 is “Colporrhaphy, suture of injury of vagina (nonobstetrical).” The mix-up usually happens after a biopsy. The surgeon samples tissue and closes the site with sutures, and the claim goes out as 57135 even though no cyst or tumor was excised.

If the note shows a biopsy closed with sutures and nothing more, the biopsy code covers it. 57105 is the extensive biopsy that requires suture, so the closure isn’t billed on top.

Unlisted code 58999 is the rare exception

CPT 58999 is the unlisted procedure code for the female genital system. Use it only when no CPT code describes the procedure and 57135 would misrepresent it.

• Complex excision with reconstruction: Some defects need flap reconstruction or a graft that no specific repair code covers. Then 57135 alone may undercode the service.
• New surgical technique: If the approach can’t be mapped to the existing descriptor, 58999 with detailed documentation is correct.
• Not for a difficult excision: A large or adherent cyst is still 57135. Report the extra work with modifier -22 instead.

Billing CPT 58999 means sending a special report with the claim. It describes the nature, extent and need for the procedure, plus the time, effort and equipment involved. Without it, 58999 claims are routinely denied. Talk to a certified professional coder before swapping an unlisted code in for a named one.

Four modifiers you may need with 57135

Modifiers change how the payer reads a 57135 claim. Using the wrong one, or leaving one off when it’s needed, is a common denial trigger.

What Medicare pays for CPT 57135 in 2026

The CMS Physician Fee Schedule sets the Medicare RVUs for 57135. The figures below come from the 2026 Medicare Physician Fee Schedule. Check the current-year values in the CMS lookup before quoting them to a payer.

At the standard 2026 conversion factor of $33.4009, those totals come to about $168 in a facility and $243 in an office. Both are before geographic adjustment.

Use the FastRVU lookup tool to see the values with your locality’s adjustment applied. Commercial rates are set by each contract and can differ a lot from Medicare.

Six reasons 57135 claims get denied

Most 57135 denials trace back to the note, the diagnosis or the code choice, so they can be prevented. Strong denial management workflows start with knowing which documentation problems lead to which denial codes.

1. The ICD-10 code doesn’t support medical necessity. Using N89.9 (unspecified) when the note clearly identifies a Gartner duct cyst invites a medical necessity denial. N89.8 or Q52.4 with supporting clinical notes will hold up better.
2. The note documents a biopsy, not an excision. If it says “punch biopsy performed and site closed,” the service is 57100 or 57105, not 57135. When the note only says “lesion removed,” query the surgeon before choosing 57135.
3. The wrong neighbor code is selected. A post-biopsy suture billed as 57135 and a full excision billed as 57200 are both audit flags. Check the medical billing denial codes that come back on these pairs.
4. No pathology report on file. If the note says the specimen went to pathology, payers expect the report in the record. Without it, the payer may question whether the procedure was performed as documented.
5. A bundling edit without the right modifier. Billed with a procedure that NCCI edits bundle, 57135 comes back as CO-97. Only a supported distinct-service modifier, such as -59 or XS, prevents that. Modifier -51 on its own doesn’t bypass these edits.
6. Prior authorization is missing. Some commercial plans require prior authorization for planned outpatient surgery. Check the plan’s rules before scheduling.

Before you submit: A 57135 claim checklist

Run through these checks before the claim leaves the practice.

• The note says the mass was removed completely and describes how.
• The site and size are recorded.
• The ICD-10 code matches the note and, where available, the pathology report.
• The code is 57135, not 57100, 57105, 57130 or 57200.
• Any modifier is backed by the note, with -59 or XS used only for a distinct site.
• The place of service matches where the procedure happened.
• A prior authorization number is on the claim if the plan required one.
• No routine follow-up visit inside the 10-day global is billed separately.

How Pabau keeps 57135 claims complete before they go out

In many ob-gyn practices, the claim for a 57135 excision is still pieced together by hand. Someone copies the procedure from the schedule, looks up the diagnosis code and re-keys the insurance details. Each step is a chance for a missing field or a wrong code.

Pabau’s claims management software builds the claim from the patient record instead. The CPT code attached to the service lands on the charge line, and the ICD-10 slots are seeded from the recorded problem list. Built-in ICD-10-CM and CPT lookup libraries let your team confirm a code without leaving the claim.

Before the Send button unlocks, Pabau checks that required claim fields are complete, such as membership numbers and authorization codes. US claims then go through Claim.MD, with real-time eligibility checks, ERA posting and claim-status tracking.

Your billing team spends less time re-keying claims and chasing rejections for missing details. That leaves more time for the coding calls only a person can make.

Send cleaner ob-gyn claims the first time

Pabau pre-fills claims from the patient record, offers ICD-10-CM and CPT lookup libraries, and checks required fields before submission. US claims go through Claim.MD with eligibility checks and ERA posting.

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Conclusion

CPT code 57135 rewards a simple habit. Code what the surgeon removed, and only when the note proves the mass came out whole. If it can’t show a complete excision of a discrete mass, 57135 is the wrong code, and no modifier will rescue the claim.

The best place to prevent a 57135 denial is the operative note template your surgeons use. When it prompts for site, size, technique and completeness, choosing between 57135, 57130, 57105 and 57200 becomes routine. Hold the claim for pathology when the diagnosis could change, and treat the 10-day global as part of the payment.

For a refresher on the wider revenue cycle, see how medical billing works from charge to payment. Book a demo to see how Pabau pre-fills and submits gynecology claims, so fewer come back for missing details.

Continue your research

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