Certified Professional Coder (CPC) Quiz: Apply Digestive Bundling Rules
20 questions · exam conditions
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Apply Digestive Bundling RulesQuestion 1 of 20

An endoscopist performs a colonoscopy and places a colonic stent for a malignant obstruction. Biopsies of the obstructing lesion are also taken. Which code(s) are reported?

45389 and 45380-59
45389 only
45380 and 45386-59
45378 and 45389-51
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Certified Professional Coder (CPC) Quiz

Certified Professional Coder (CPC) Quiz: Apply Digestive Bundling Rules

Practice Apply Digestive Bundling Rules in Certified Professional Coder (CPC) with focused quiz questions that help you check what you know, review explanations, and build confidence with test-style prompts.

What this quiz covers

This quiz focuses on Apply Digestive Bundling Rules, giving you a quick way to practice the rules, question types, and explanations that matter most for Certified Professional Coder (CPC).

How to use this quiz

Try each quiz question before looking at the correct answer. Use the explanations to review missed ideas, then come back to similar questions until the pattern feels familiar.

All questions

Question 1

An endoscopist performs a colonoscopy and places a colonic stent for a malignant obstruction. Biopsies of the obstructing lesion are also taken. Which code(s) are reported?

  1. 45389 and 45380-59 (correct answer)
  2. 45389 only
  3. 45380 and 45386-59
  4. 45378 and 45389-51
Explanation: CPT® 45389 covers colonoscopy with endoscopic stent placement. CPT® 45380 covers colonoscopy with biopsy. When a biopsy is taken at a site distinct from the stent placement, or when the biopsy is clinically separate, modifier -59 may be applied to support reporting both services. However, many payers bundle biopsy into the stent placement — documentation and payer NCCI guidelines should be verified.

Question 2

During an upper GI endoscopy (EGD), the gastroenterologist performs both an esophageal dilation and a biopsy of the gastric mucosa. How are these services reported?

  1. 43235 and 43239-59
  2. 43245 and 43239-59 (correct answer)
  3. 43239 and 43249-59
  4. 43249 alone
Explanation: CPT® 43245 covers upper GI endoscopy with dilation of gastric outlet for obstruction. CPT® 43239 covers EGD with biopsy. When two distinct endoscopic procedures are performed through the same scope on different anatomical sites or for different indications during the same session, both may be reported with modifier -59 on the additional procedure to indicate a distinct service. Payer NCCI guidelines should be confirmed.

Question 3

A surgeon performs a laparoscopic appendectomy and incidentally removes a normal-appearing appendix during a laparoscopic right hemicolectomy for colon cancer. Can the appendectomy be reported separately?

  1. Yes, always — two separate procedures were performed
  2. Yes, with modifier -51 on the appendectomy code
  3. No — incidental appendectomy is considered bundled into the primary colectomy and is not separately reportable (correct answer)
  4. Yes, with modifier -59 to indicate a distinct site
Explanation: An incidental appendectomy performed at the time of a primary abdominal procedure is not separately reportable. CPT® guidelines and NCCI edits consider the incidental removal of a normal appendix to be included in the primary surgical procedure. Only when the appendectomy is performed as the primary or independently indicated procedure (e.g., for appendicitis) is it coded separately.

Question 4

During an EGD, the endoscopist performs esophageal variceal band ligation. A separate biopsy of the stomach is also taken. How is the biopsy reported relative to the ligation?

  1. 43244 and 43239-59 (correct answer)
  2. 43244 only — the biopsy is bundled
  3. 43239 and 43244-51
  4. 43239 only — ligation is included in a biopsy
Explanation: CPT® 43244 covers upper GI endoscopy with band ligation of esophageal varices. CPT® 43239 covers EGD with biopsy. When two distinct endoscopic procedures are performed at different anatomical sites (esophagus vs. stomach) during the same session, both may be reported with modifier -59 on the biopsy code to indicate a separate site. Documentation must support the distinct nature of each service.

Question 5

A surgeon performs a Whipple procedure (pancreaticoduodenectomy) and also performs a cholecystectomy as part of the same operative session because the gallbladder is in the surgical field and removal is standard practice. Can the cholecystectomy be reported separately?

  1. Yes — two distinct organs were removed, warranting separate codes
  2. Yes, with modifier -51 on the cholecystectomy
  3. No — cholecystectomy is considered integral to the Whipple procedure and is bundled into the primary code (correct answer)
  4. Yes, with modifier -59 to indicate a distinct organ
Explanation: Cholecystectomy is considered an integral component of the pancreaticoduodenectomy (Whipple procedure, CPT® 48150–48160) and is not separately reportable. When a procedure is routinely performed as part of or in conjunction with a primary procedure, it is bundled. Reporting it separately constitutes unbundling and is incorrect coding.

Question 6

A surgeon performs a laparoscopic Nissen fundoplication for GERD. The preoperative EGD performed in the same operative session to confirm anatomy is documented in the operative report. How is the EGD reported?

  1. It is reported separately with modifier -51
  2. It is reported with modifier -59 to indicate a distinct service
  3. It is bundled into the fundoplication and not separately reportable when performed by the same surgeon in the same session (correct answer)
  4. It is always separately reportable regardless of the same-session rule
Explanation: When a diagnostic endoscopy is performed immediately before a surgical procedure by the same surgeon in the same operative session specifically to confirm surgical anatomy, it is considered bundled into the primary surgical procedure. The EGD in this context is integral to the fundoplication and is not separately reportable. If performed on a prior date, it would be separately reportable.

Question 7

A surgeon performs a laparoscopic appendectomy on a patient who is also undergoing a laparoscopic hysterectomy by a different surgeon in the same operative session. The appendectomy was separately indicated (incidental finding of an acutely inflamed appendix). Which modifier does the surgeon performing the appendectomy append?

  1. -51
  2. -59 (correct answer)
  3. -62
  4. -80
Explanation: When two surgeons each perform separate, independently indicated procedures during the same operative session, the procedure performed by the additional surgeon is reported with modifier -59 (or the appropriate X modifier) to indicate a distinct procedure and service. Since a different surgeon performed each procedure, modifier -51 (same provider multiple procedures) is not applicable — modifier -59 establishes the distinct, separate nature of the appendectomy.

Question 8

An upper endoscopy is performed for diagnostic evaluation of dysphagia. During the procedure, the endoscopist also performs dilation of an esophageal stricture using a balloon dilator. Which code is reported?

  1. 43235 and 43220-51
  2. 43220 only
  3. 43235 only
  4. 43249 only (correct answer)
Explanation: CPT® 43249 covers upper GI endoscopy with balloon dilation of the esophagus (less than 30 mm diameter). When a therapeutic procedure is performed during an endoscopy that was begun as diagnostic, only the therapeutic code is reported — the diagnostic component is bundled. The correct code for esophageal balloon dilation via endoscopy is 43249, reported alone.

Question 9

The surgeon performs a laparoscopic Heller myotomy for achalasia and concurrently performs a laparoscopic partial fundoplication (Dor procedure) to prevent post-myotomy reflux. How are these services reported?

  1. 43279 only — the fundoplication is bundled into the myotomy
  2. 43280 — which is the specific CPT® code for Heller myotomy with fundoplasty, reported alone (correct answer)
  3. 43279 and 43280-51
  4. 43279 and 43324-51
Explanation: CPT® 43280 specifically covers laparoscopic esophagomyotomy (Heller type) with partial fundoplasty. When a single CPT® code captures both components of the combined procedure, that combination code is reported alone. Reporting the individual components separately constitutes unbundling. Always check for a CPT® combination code before reporting component procedures individually.

Question 10

A surgeon performs a laparoscopic sigmoid colectomy with primary anastomosis (no ostomy). Intraoperatively, the surgeon also performs a diagnostic laparoscopy of the abdomen prior to beginning the resection to confirm anatomy. How is the diagnostic laparoscopy reported?

  1. 49320 and 44204-51
  2. 49320-59 and 44204
  3. 44204 only (correct answer)
  4. 49320 only
Explanation: A diagnostic laparoscopy performed immediately prior to and as the approach for a definitive laparoscopic procedure is considered integral to the surgical procedure. CPT® guidelines and NCCI bundle diagnostic laparoscopy (49320) into a more definitive laparoscopic procedure (44204 — laparoscopic colectomy, partial) performed during the same session. Only the definitive procedure code (44204) is reported.

Question 11

A surgeon performs an open gastrectomy and concurrently harvests an omental pedicle flap from the same operative field for use in a separate reconstruction. Is the omental flap harvest separately reportable?

  1. No — omental harvest from the same operative field is bundled into the gastrectomy (correct answer)
  2. Yes — tissue harvest for reconstruction is always a separate, billable service
  3. Yes, with modifier -51 on the harvest code
  4. Yes, with modifier -59 to indicate a distinct anatomical structure
Explanation: Harvesting an omental flap from the same operative field during a primary abdominal procedure is considered part of the primary surgical service when performed by the same surgeon. It is not separately reportable as a distinct procedure. The harvest is integral to the primary surgical field and is bundled into the primary procedure code.

Question 12

A gastroenterologist performs a colonoscopy with hot biopsy forceps removal of one polyp and cold forceps biopsy of a separate lesion during the same session. Which CPT® coding rule applies to reporting these two services?

  1. Both the biopsy (45380) and the polypectomy (45384) are reported together with modifier -51
  2. The polypectomy (45384) is reported alone; the biopsy is bundled per NCCI edits (correct answer)
  3. Both codes are reported with modifier -59 on the lesser procedure
  4. Only the biopsy is reported since it was performed on a separate lesion
Explanation: NCCI edits bundle colonoscopy with biopsy (45380) into colonoscopy with polypectomy or ablation when both are performed at the same session. The more comprehensive therapeutic procedure is reported; the diagnostic biopsy is considered a component. Modifier -59 may be applicable only if the biopsy was performed at a distinctly separate site during the same session and payer policy supports it.

Question 13

A surgeon performs a colonoscopy with snare polypectomy on the same day that a prior incomplete colonoscopy was performed earlier in the day by the same provider due to poor bowel prep. How is the repeat colonoscopy reported?

  1. Both colonoscopies are reported; modifier -76 is added to the second
  2. Only the second, complete colonoscopy is reported
  3. Both colonoscopies are reported; modifier -59 is added to the second
  4. The first incomplete colonoscopy is reported with modifier -53; the completed colonoscopy is reported separately (correct answer)
Explanation: The first incomplete colonoscopy is reported with modifier -53 (discontinued procedure) to indicate it was not completed. The second, completed colonoscopy is separately reportable as it was a new procedure initiated after the first was discontinued. This allows for appropriate reimbursement of both the attempted and the completed procedures.

Question 14

A surgeon performs a primary open repair of a ventral hernia and also performs lysis of adhesions that were encountered while accessing the hernia site. Can the lysis of adhesions be reported separately?

  1. Yes — lysis of adhesions is always a separate, billable procedure
  2. No — lysis of adhesions performed to access the primary surgical site is considered part of the surgical approach and is bundled (correct answer)
  3. Yes, with modifier -22 on the hernia repair code
  4. Yes, with modifier -51 on the lysis of adhesions code
Explanation: Lysis of adhesions performed solely to access the primary surgical site is considered integral to the primary procedure and is not separately reportable. It is bundled into the primary procedure code. Lysis of adhesions may only be reported separately when it is a significant, independently indicated procedure performed for its own clinical purpose — not as incidental access.

Question 15

A surgeon performs a laparoscopic cholecystectomy and simultaneously repairs a small umbilical hernia discovered intraoperatively. Which coding approach is correct?

  1. Only the cholecystectomy is reported; hernia repair is always bundled into abdominal surgery
  2. Both the cholecystectomy (47562) and the hernia repair are reported, as they are separate, distinct procedures (correct answer)
  3. The hernia repair is reported with modifier -22 added to the cholecystectomy code
  4. Only the hernia repair is reported since it was the additional finding
Explanation: A hernia repair performed during the same operative session as a cholecystectomy is a separate and distinct procedure addressing a different condition. Both codes are reported — the cholecystectomy and the hernia repair — with modifier -51 on the lower-valued procedure. NCCI does not bundle hernia repair into cholecystectomy because they address different anatomical structures and diagnoses.

Question 16

A surgeon performs a laparoscopic colectomy and simultaneously performs a laparoscopic repair of an enterotomy (inadvertent bowel perforation) that occurred during the dissection. How is the enterotomy repair reported?

  1. Separately with modifier -78
  2. Separately with modifier -22 on the colectomy
  3. It is bundled into the colectomy as a complication of the primary procedure and is not separately reportable (correct answer)
  4. Separately with modifier -51
Explanation: An inadvertent enterotomy that is repaired during the same operative session is considered a complication that was managed intraoperatively. It is part of the same operative session and is bundled into the colectomy code. A separate repair code is not reported for intraoperative complications managed during the primary procedure. Modifier -78 applies to return to the OR for complications, not same-session management.

Question 17

A surgeon performs a laparoscopic colectomy with creation of a colostomy. Is the colostomy separately reportable?

  1. Yes — colostomy creation is always a separate billable procedure
  2. No — colostomy creation is integral to the colectomy procedure and is included in the colectomy code (correct answer)
  3. Yes, with modifier -51 on the colostomy code
  4. Yes, with modifier -62 since two surgeons typically create the colostomy
Explanation: When a colostomy is created as a necessary component of a colectomy (e.g., Hartmann's procedure), the stoma creation is considered integral to and included in the colectomy code. It is not separately reportable. CPT® colectomy codes encompass the resection and any necessary intestinal diversion created as part of the procedure.

Question 18

The operative report documents a colonoscopy during which three separate polyps are removed — one by hot snare polypectomy and two by cold forceps biopsy. How many CPT® codes are reported?

  1. Three codes — one for each polyp removed
  2. Two codes — one for the snare polypectomy and one for the biopsy, with modifier -59
  3. One code — only the snare polypectomy (45385) (correct answer)
  4. One code — only the biopsy (45380) since the majority of lesions were biopsied
Explanation: Per NCCI edits and CPT® guidelines, colonoscopy codes are reported once per session regardless of how many polyps are removed, with the most comprehensive technique determining the code. The hot snare polypectomy (45385) is more comprehensive than biopsy (45380) and is the only code reported. The number of polyps does not result in multiple code reporting for a colonoscopy.

Question 19

Two separate polyps are found during a colonoscopy — one in the ascending colon removed by snare polypectomy, and one in the rectum removed by ablation (destruction). Which CPT® codes are reported?

  1. 45385 and 45388-59 (correct answer)
  2. 45385 and 45381-59
  3. 45385 only
  4. 45388 and 45380-59
Explanation: CPT® 45385 covers colonoscopy with snare polypectomy; CPT® 45388 covers colonoscopy with ablation. When two different techniques are used on two separate lesions during the same session, both codes may be reportable. Modifier -59 on the second code indicates a distinct lesion and procedure. This differs from multiple polyps removed by the same technique, which is reported with only one code.

Question 20

A gastroenterologist performs a diagnostic EGD and, during the same encounter, performs an upper GI endoscopy with control of a bleeding gastric ulcer. How are these services reported?

  1. 43235 and 43255-51
  2. 43255 only (correct answer)
  3. 43235 and 43255-59
  4. 43255 and 43239-59
Explanation: CPT® 43255 covers upper GI endoscopy with control of bleeding. When a therapeutic endoscopy is performed during the same session as a diagnostic endoscopy, the diagnostic EGD (43235) is bundled into the therapeutic procedure (43255). Only the therapeutic code is reported. The diagnostic component is considered inherent to the therapeutic endoscopic service.