CPT code 46924 – Extensive destruction of anal lesions

Key takeaways

CPT code 46924 reports extensive destruction of anal lesions by any method, and it is the only extensive code in the 46900-46924 series.

The five simple codes each name one method: 46900 chemical, 46910 electrodesiccation, 46916 cryosurgery, 46917 laser surgery and 46922 surgical excision.

Payers look for an operative note that supports an extensive field, with lesion count, distribution and the size of the treated area.

In the 2026 fee schedule, 46924 carries 18.61 total RVUs in the office and 5.15 in a facility, with a 10-day global period.

ICD-10-CM A63.0 (anogenital warts) is the usual supporting diagnosis, and a non-specific skin code invites medical necessity denials.

CPT code 46924: Official descriptor and procedure overview

CPT code 46924 reports extensive destruction of one or more anal lesions, by any destruction method. CMS’s October 2026 relative value file lists it as an active, separately paid code with a 10-day global period. The American Medical Association publishes the full descriptor. It reads: Destruction of lesion(s), anus (eg, condyloma, papilloma, molluscum contagiosum, herpetic vesicle), extensive (eg, laser surgery, electrosurgery, cryosurgery, chemosurgery).

The code sits in the Surgery section of the CPT codebook, under Digestive system, Anus and Destruction. It is method-neutral. Electrosurgery, cryosurgery, laser surgery and chemical destruction all fall under 46924 when the extent of disease and treatment is extensive.

The key reference facts are summarized below. Verify the current-year descriptor and fee schedule in the CMS Physician Fee Schedule look-up tool before submitting claims. Annual updates can change modifier rules and payment amounts.

Destruction techniques and clinical scope

Several methods qualify under 46924 when the operative findings reach the extensive threshold. The descriptor is method-neutral, so the technique alone does not decide whether 46924 or a neighboring code applies. Extent does.

• Electrosurgery (electrocautery or fulguration): The most common technique for extensive perianal condyloma. High-frequency current destroys tissue layer by layer. Simple destruction by electrodesiccation has its own code, 46910.
• Cryosurgery (liquid nitrogen): 46916 is the code for simple destruction by cryosurgery. When the lesions treated are extensive, 46924 applies instead.
• Laser ablation (CO2 laser): Used for intra-anal and perianal lesions. 46917 reports simple destruction by laser surgery, and 46924 applies when the operative extent is extensive.
• Chemical destruction: 46900 is a surgical-section code for simple chemical destruction, such as trichloroacetic acid applied by the clinician. Chemical destruction moves to 46924 only when the extent is extensive.

The anatomical scope covers the perianal skin and the anal canal. Lesions extending into the rectum may require a separate code for the rectal component. Document each anatomical zone treated to support medical necessity and avoid NCCI bundling conflicts.

CPT code 46924 vs 46922: Simple vs extensive destruction

CPT code 46924 represents extensive destruction, while CPT code 46922 represents simple destruction of anal lesions by surgical excision. The billing distinction matters, because 46922 carries 10.31 non-facility total RVUs in 2026 against 18.61 for 46924. Reviewers check both directions: 46924 billed without an extensive field documented, and 46922 billed when extensive destruction was performed.

Payers look for documentation that supports an extensive field: lesion count, distribution and the size of the area treated. The call rests on the physician’s judgment and the operative note. When in doubt, write a thorough note describing the full scope of disease and treatment rather than defaulting to the lower code.

The full anal destruction code family: 46900 through 46924

CPT code 46924 is the extensive code in a six-code series covering anal lesion destruction. The five simple codes each name one method, while 46924 covers extensive destruction by any method. The table pairs each code with its 2026 total RVUs from the CMS fee schedule file.

When the method is laser and the extent is extensive, 46924 takes precedence over 46917. The extent descriptor outranks the method descriptor when the two codes would otherwise conflict.

Setting matters as much as the code. In the office, 46924 carries 18.61 total RVUs against 7.61 to 13.90 for the simple codes. In a hospital or ASC, the whole series sits between 3.62 and 5.15, because the facility carries the overhead.

ICD-10 diagnosis codes that pair with 46924

Payers require a diagnosis code that establishes medical necessity before they will pay for CPT code 46924. The wrong diagnosis code is a frequent reason this procedure is denied.

A63.0 is the correct primary code for the large majority of 46924 claims. A non-specific skin code in place of A63.0, such as an L-code for unspecified dermatosis, tells the payer the diagnosis has not been established. That usually ends in a medical necessity denial.

Documentation requirements for the operative note

The operative note is the single most important document for a successful CPT code 46924 claim. Payers scrutinize this code closely because “extensive” is a clinical judgment term. Every element below belongs in the note to withstand audit or appeal.

• The extent, described: Payers look for documentation that supports an extensive field, such as lesion count, distribution and size. Describe the extent in the note rather than leaving the reviewer to infer it from the code.
• Lesion count and distribution: Record the number of lesions treated and where they sit. An example: “12 condylomata involving the perianal skin from 3 o’clock to 10 o’clock, extending into the distal anal canal.”
• Method used: State the specific destruction technique (electrofulguration, CO2 laser, cryotherapy) even though the code is method-neutral. This supports clinical credibility and matches the operative charge.
• Treatment area dimensions: Include the approximate size of the treatment field in centimeters where relevant.
• Medical necessity statement: A brief sentence explaining why surgical destruction was required (eg, “failed prior topical therapy,” “biopsy-confirmed condyloma requiring operative management”).
• Post-procedure findings: Confirm that destruction was complete and document hemostasis or wound management steps.

Pairing thorough operative notes with clean claim submission practices cuts the number of 46924 claims that come back for additional documentation. When the note already answers the payer’s questions, pre-payment review requests are easier to resolve without an appeal.

CPT code 46924 reimbursement and RVU values

CPT code 46924 carries the highest RVU weight in its series because it represents extensive destruction. The figures below come from the CMS 2026 Medicare Physician Fee Schedule relative value file, October update. Verify the current year in the CMS MPFS look-up tool before quoting rates to patients or coding teams.

The non-facility total is far higher than the facility total because the practice absorbs the overhead in the office. At the 2026 conversion factor of $33.4009, that works out to $621.59 in the office and $172.01 in a facility, before GPCI adjustment. Qualifying APM participants are paid at $33.5675, which gives $624.69 and $172.87.

A calculator such as the FastRVU look-up applies your locality’s geographic practice cost index (GPCI) to those national figures. Billing teams using Pabau, the practice management platform we build, can submit 46924 claims electronically, with eligibility checks available through the Claim.MD clearinghouse.

Prior authorization and payer requirements

Medicare does not universally require prior authorization for CPT code 46924, but many commercial payers and Medicare Advantage plans do. Requirements vary by plan and change often. Never assume a prior-year authorization decision applies to the current benefit year.

When a commercial payer does require pre-authorization, the clinical criteria typically include one or more of the following:

• Biopsy-confirmed diagnosis of condylomata acuminata (A63.0)
• Documented failure of topical therapy (podophyllin, imiquimod, or trichloroacetic acid) over a defined treatment period
• Operative report or clinical notes from a prior less-extensive destruction attempt
• Immunocompromised status documentation (HIV, post-transplant) when cited as a clinical rationale

Submit authorization requests with the operative plan, relevant history, and the specific CPT code 46924. Some payers offer a general “anal surgery” category in their authorization systems, which is too broad. Confirm medical billing compliance protocols with each payer individually. Medicare Administrative Contractor (MAC) policies and local coverage determinations (LCDs) can add criteria beyond the national Medicare guidance.

Common denial reasons and how to appeal

Several denial patterns repeat across colorectal and proctology practices billing CPT code 46924. Knowing them before submission is cheaper than fixing them after. The table below maps each denial type to its corrective action.

Structured denial management workflows catch many of these at the pre-claim stage. Build a 46924-specific pre-submission checklist into your billing process, so fewer claims reach the appeal stage at all. For tracking denial codes in medical billing systematically, a platform that surfaces CARC codes at the ERA level shortens the investigation cycle.

NCCI edits and modifier usage for CPT code 46924

The National Correct Coding Initiative (NCCI) publishes quarterly tables of code pairs that are considered components of a more comprehensive procedure. For CPT code 46924, the most relevant bundling scenarios involve same-day E/M codes and diagnostic anoscopy, reported with 46600. Check the current procedure-to-procedure (PTP) tables on the CMS NCCI edits page before appealing any NCCI-related denial.

Key NCCI considerations for 46924:

• Anoscopy (46600): A diagnostic anoscopy at the same session is a likely bundling candidate. Check the current NCCI PTP table for the 46600 and 46924 pair before billing both. Bill it separately only when documentation shows a distinct diagnostic service.
• Modifier 59 (or XS/XU): Appropriate only when the second procedure was distinct from 46924. That means a separate anatomical location, a separate session, or a different lesion type. Document the distinction explicitly in the operative note.
• Bilateral modifier (50): The 2026 fee schedule file gives 46924 a bilateral surgery indicator of 0, so the bilateral payment adjustment does not apply. The anus is a single anatomical structure, and modifier 50 does not belong on this code.

Same-day E/M billing with CPT code 46924

Billing an evaluation and management (E/M) code on the same day as CPT code 46924 is appropriate only when the E/M was a separate service. That means a new problem was evaluated, a separate clinical decision was made, or the encounter involved work beyond the typical pre-operative assessment. Routine pre-operative assessment bundled into the surgical decision is not separately billable.

When a separate E/M is justified, two requirements apply:

• Modifier 25 on the E/M: Append modifier 25 to the E/M code (not to 46924) to indicate a significant, separately identifiable evaluation and management service. Without modifier 25, the E/M will bundle into 46924 and be denied.
• Distinct E/M documentation: The clinical note must document the separate E/M work independently of the operative note. The operative note covers the procedure, and the E/M note covers the separate clinical evaluation.

How Pabau keeps 46924 claims moving after submission

The operative note decides whether a 46924 claim holds up, and that stays with the surgeon. The billing team then confirms coverage, tracks any prior authorization, submits the claim and follows what comes back.

Pabau’s claims management software submits claims electronically and tracks them through remittance, so billing staff can see denials. The prior authorization code, dates and sessions sit on the patient’s case, with a warning when one is missing.

In the US, eligibility checks, CMS-1500 claims and ERA remittances all run through Claim.MD. A denied 46924 claim then comes back with its remittance reason, ready for the records request or appeal.

Track every 46924 claim through to payment

Pabau’s claims management software submits 46924 claims electronically and tracks them through remittance. Eligibility checks and prior authorization details sit on the same patient record.

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Conclusion

Bill 46924 when the operative note describes an extensive field, and bill the simple code for the method used when it does not. The code is method-neutral, so the extent recorded in the note decides the claim.

The payment difference justifies the documentation effort. In the office, 46924 carries 18.61 total RVUs against 7.61 to 13.90 for the simple codes, and an unsupported note puts that difference at risk.

Pabau handles the administrative side, from claim submission and superbill documentation to ERA tracking. Book a demo to see how Pabau follows high-scrutiny surgical claims like 46924 through to payment.

Continue your research

Need a foundation in claim submission workflows? Medical billing fundamentals explains how claims move from charge capture to payment posting.

Submitting claims through Claim.MD? How Claim.MD clearinghouse works covers payer submission, eligibility, and ERA handling.

Tracking denials from remittance files? Electronic remittance advice explained covers how ERAs surface CARC denial codes so you can act before appeal deadlines.

Billing a diagnostic anoscopy on the same day? CPT code 46600 covers anoscopy billing, modifiers, and reimbursement.

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