Specialty
General surgery billing services
General surgery billing services keep a surgeon paid for the operation and for the work around it that Medicare leaves outside the global fee: the visit that decided a major operation, an unrelated problem seen during recovery, a planned second stage, a return to the operating room.
See where claims are getting stuck. No patient data needed.
Each procedure is ranked for multiple-procedure payment, hernia repair and appendectomy are billed only when they stand on their own, and assistant and co-surgeon claims carry the modifiers that get them paid. Remitwright gives general surgery practices a dedicated biller who reads every operative note against those rules and works denials to the cause.
General surgery billing is one of Remitwright's specialty billing services, each set out with its own code families, denial reasons and payer rules.
Last reviewed by the Remitwright billing team. Editorial policy
- 11400-11646
- 12001-13160
- 19110-19126
Denials
Why general surgery claims get denied
The reasons that come up most on general surgery remittances, with the usual cause and the fix. Code explanations are our own; the official list is maintained by X12.
| Code | Reason | Usual cause | The fix |
|---|---|---|---|
| CO-97 | Inside the global surgery fee | A postoperative visit billed without modifier 24 for a problem that was in fact unrelated, or a visit the day before a major operation billed after the decision had already been made | Every visit in a global period checked against the operation's dates, and the unrelated reason written into the note before 24 is applied |
| CO-4 | Modifier does not fit the service | Modifier 57 put on a visit before a 0 or 10 day procedure, where the decision to operate is already paid inside the procedure | The procedure's global indicator read first, with 25 used for a separate problem on minor procedure days |
| CO-236 | Code pair not payable together | An incidental appendectomy, a hernia repaired at the operative incision, or a diagnostic laparoscopy billed with the surgical laparoscopy | The operative note read for a diseased appendix, a separate hernia site or a diagnostic finding that changed the plan, and the extra line dropped otherwise |
| CO-54 | Assistant not payable for this case | An assistant billed on a procedure for which Medicare does not pay assistants, because one is used in under 5 percent of cases nationally | The assistant indicator checked on the fee schedule before the case, and the patient protected from a bill Medicare forbids |
| CO-16 | Co-surgery claim incomplete | A procedure that requires co-surgery billed with modifier 62 by only one of the two surgeons, so Medicare returns the claims unpaid | Both surgeons' billing offices sent the same procedure code, date and modifier before either claim is released |
| CO-234 | Not billed on its own | Simple closure billed with a lesion excision, or dressings, adhesive strips and local anesthesia billed as their own lines | Supplies and simple closure left inside the procedure, and intermediate or complex repair billed only where the note describes it |
Codes
Common general surgery codes and modifiers
Code families by number with our own one-line explanations. CPT descriptors belong to the AMA and are not reproduced here.
| Codes | What the family covers |
|---|---|
| 11400-11646 | Excision of benign and malignant skin lesions, coded by site and by excised diameter. Simple closure is included, and a benign excision of 0.5 cm or less includes any repair at all. |
| 12001-13160, 14000-14350 | Wound repair graded simple, intermediate or complex, and adjacent tissue transfer. An intermediate or complex repair can go with a lesion excision; a tissue transfer already includes the excision and the repair of the same lesion. |
| 19110-19126, 19300-19307, 38500, 38525 | Breast excision, mastectomy and open sentinel node biopsy. An excision is part of a mastectomy unless its pathology decided the mastectomy, and a sentinel node biopsy is billed except when the mastectomy includes lymphadenectomy in the same area. |
| 44970, 47562-47564, 49320, 49321 | Laparoscopic appendectomy, laparoscopic cholecystectomy, diagnostic laparoscopy and laparoscopic biopsy. A normal appendix removed with another operation is not billed, and a diagnostic laparoscopy is part of any surgical laparoscopy. |
| 45378, 45380, 45385, G0105, G0121 | Diagnostic colonoscopy, colonoscopy with biopsy or with polyp removal, and Medicare screening colonoscopy for high-risk and average-risk patients. Related colonoscopies are priced from the base colonoscopy, and a screening that turns into a biopsy or polypectomy carries modifier PT. |
| 49591-49596, 49613-49618 | Repair of anterior abdominal wall hernias, with mesh included. A hernia repaired at the incision used for another open or laparoscopic abdominal operation is part of that operation. |
| 99024, G0559 | The no-charge code for a postoperative visit inside a global period, required from some practices, and the add-on a practitioner other than the surgeon uses for postoperative follow-up visits. |
Modifiers that matter
- 57
- The visit that produced the decision for a 90 day operation, held the day before or the day of surgery. Not used before a 0 or 10 day procedure, where the decision is part of the procedure.
- 24
- An unrelated visit by the surgeon during the postoperative period, documented as unrelated. A visit for a complication of the surgery stays inside the global fee.
- 58 and 78
- 58 for a staged or more extensive procedure planned at the time of the first, or therapy after a diagnostic procedure, which starts a new postoperative period. 78 for an unplanned return to the operating room for a related problem.
- 79
- An unrelated procedure by the same surgeon during the postoperative period of an earlier one. Its own postoperative period starts with it.
- 54 and 55
- Surgical care only, and postoperative management only, when care is handed over. Both claims carry the same procedure code and date of surgery, and both records keep the written transfer agreement.
- 80, 82 and AS
- An assistant at surgery: a physician, 82 when no qualified resident was available, or a PA, NP or CNS with AS. Paid only on procedures where Medicare allows an assistant.
- 62
- Two surgeons of different specialties each performing part of one procedure. Both must bill with it, and each documents the medical need for two surgeons.
Payers
Payer notes
- MedicareThe global surgical package applies in every setting, from the office to the inpatient unit. A 0 day procedure has no pre- or postoperative days, a 10 day procedure covers 11 days counting the day of surgery, and a 90 day operation covers 92 days, from the day before surgery to 90 days after it. Surgeons of the same specialty in one group bill as though they were one physician.1
- MedicareOutside the package: the visit that decided a major operation, unrelated visits, treatment of the underlying condition, diagnostic tests, distinct procedures that are not complications, and complications that need a return to an operating room, which includes an endoscopy suite but not a patient's room or a recovery room.1
- MedicareMultiple procedures at one session are ranked by fee schedule amount, not by the amount billed: the highest is paid at 100 percent and the second to fifth at 50 percent, with any beyond five priced by report. Related endoscopies follow their own rule, paying the highest in full plus the difference between the next one and the base endoscopy.2
- MedicareEach co-surgeon billing with modifier 62 is paid 62.5 percent of the global fee schedule amount, and team surgery with modifier 66 is priced by report. An assistant at surgery is paid 16 percent of the surgical payment, and not at all on procedures that use an assistant in under 5 percent of cases nationally.1
- MedicareGroups of 10 or more practitioners in Florida, Kentucky, Louisiana, Nevada, New Jersey, North Dakota, Ohio, Oregon and Rhode Island must report postoperative visits with 99024 for the procedure codes CMS lists. Smaller practices are exempt but encouraged to report.1
- MedicareWhen a screening colonoscopy becomes a biopsy or polypectomy in the same encounter, the claim carries modifier PT, the deductible is waived and coinsurance is reduced: 15 percent for 2023 through 2026, 10 percent for 2027 through 2029, and none from January 1, 2030.5
Authorizations
Original Medicare's prior authorization program for hospital outpatient services includes panniculectomy and vein ablation, and the hospital makes the request; most of its other control over general surgery comes through the global surgery rules and NCCI edits at claim time. Commercial and Medicare Advantage plans keep their own lists, which can include elective hernia, bariatric, breast and vein procedures. Your biller keeps the list by payer, requests authorization when the case is booked, and checks the operative note against what was approved before billing.
Documentation traps
- A clinic note that led to the operation without saying the decision to operate was made at that visit, which modifier 57 depends on
- A postoperative visit for a new problem written up as routine follow-up, so modifier 24 has nothing to stand on
- Lesion diameters and repair layers left out, when both the excision and the repair codes depend on them
- A hernia repair described without saying whether it was at the operative incision or at a separate site
- A second-stage procedure not recorded as planned at the first operation, so it reads as a complication rather than a staged procedure
- An appendix removed with another operation and described as normal, or not described at all
What a specialist checks
Specialist or generalist for general surgery billing?
A generalist biller can enter a general surgery claim. Whether it pays turns on three things specific to general surgery billing, and a specialty-aware biller checks each one.
Code families
Each family billed with what the chart has to show for it.
- 11400-11646
- 12001-13160, 14000-14350
- 19110-19126, 19300-19307, 38500, 38525
Modifiers
Applied only where the note supports them, line by line.
- 57
- 24
- 58 and 78
If you are moving from another billing company or an in-house biller, switching billing companies follows a plan: the old and new processes run side by side until the new one is proven, and every login and every general surgery claim stays in your name.
What we handle
What we handle for general surgery practices
- Medical codingCPT, ICD-10 and modifiers assigned correctly
- Charge entryEvery encounter captured, nothing left unbilled
- Prior authorizationAuths requested, tracked, attached to claims
- Denial managementEvery denial read, worked and appealed
- Claim appealsWritten appeals, right level, right deadline
- A/R follow-upUnpaid claims chased before filing limits
A dedicated biller with named cover, working inside your system and reporting to you on one written page. How it works sets out the five stages.
Worked example: the decision visit and the extra hernia line
A surgeon sees a new patient in clinic, decides to operate, and performs a major abdominal operation with a 90 day global period the next morning, repairing a small hernia at one of the port sites before closing. The clinic visit is billed without a modifier and denied as part of the global package, and the hernia repair line is denied with the operation.
The biller reads both notes. The clinic note records the decision to operate, so the visit is corrected with modifier 57. The operative note places the hernia at a port incision used for the operation, so that line is removed rather than appealed. The practice's charge review now flags any visit on the day before or the day of a 90 day operation.
Software
Systems general surgery practices usually run
Your biller works inside your system as a user you create. All the systems we work in.
Questions
Questions about general surgery billing
When is modifier 57 used instead of modifier 25?
Which visits after surgery can be billed?
How does Medicare pay two procedures done at one operation?
When can a hernia repair be billed with another abdominal operation?
Do we have to report 99024?
What happens when a screening colonoscopy finds a polyp?
What does a general surgery practice give its biller to start?
Next step
See where your general surgery claims are getting stuck.
Three quick questions. No patient data. A billing specialist reads every request and replies in writing.
- Three questions, about two minutes
- No patient data, no software to buy
- A written reply from a biller, not a sales deck
You answer three questions
A billing specialist reads them
A written reply by email
Prefer email? sales@remitwright.com
Request received
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Reference . Quote it if you write to us about this request.
- A billing specialist reads your answers and replies by email.
- If a look at real claims makes sense, we agree read-only access under a BAA first.
- You get a written summary of what is worth working and what it would take. No commitment.
While you wait: see the sample weekly report or read how switching works. You can also download the sample weekly report (PDF).