100+ Free CGIC Practice Questions
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A screening colonoscopy is performed on a Medicare patient who is at average risk. During the procedure, a polyp is removed by snare. Which modifier is appended to the polypectomy code?
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Key Facts: CGIC Exam
150
Total Items
AAPC
5h 40m
Exam Time
AAPC
$299
AAPC Member Fee
AAPC
Age 45
USPSTF Screening Start
USPSTF 2021 update
The AAPC CGIC consists of 150 MCQ items over 5h40m with 70% passing. Fee $299 AAPC member. Master endoscopy CPT (45378 diagnostic colonoscopy, 45380 with biopsy, 45385 polypectomy snare; 43235 EGD, 43239 with biopsy), screening codes G0105/G0121 + modifier PT, and ASA polyp surveillance intervals.
Sample CGIC Practice Questions
Try these sample questions to test your CGIC exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.
1Which segment of the colon is located between the cecum and the transverse colon?
2Which structure connects the gallbladder to the common bile duct?
3The lower esophageal sphincter (LES) is primarily responsible for preventing which condition?
4Which layer of the GI tract wall contains the muscularis mucosae and is the deepest layer reached by an EMR (endoscopic mucosal resection)?
5Which condition is characterized by transmural inflammation that can affect any part of the GI tract from mouth to anus, often with skip lesions?
6The ampulla of Vater is the anatomical site where which two structures empty into the duodenum?
7Helicobacter pylori is most strongly associated with which GI condition?
8Which liver condition was formerly called NAFLD (non-alcoholic fatty liver disease) and is now coded under K76.0 with updated terminology MASLD?
9The peritoneal fold that suspends the small intestine from the posterior abdominal wall and contains its blood supply is called the:
10Esophageal varices most commonly develop as a complication of which underlying condition?
About the CGIC Exam
AAPC specialty credential for gastroenterology coders. Validates expertise in GI endoscopy CPT (EGD 43235-43259, colonoscopy 45378-45398, ERCP 43260-43278, sigmoidoscopy 45330-45350), GI/hepatobiliary surgery, ICD-10-CM K-codes, screening colonoscopy rules (G0105/G0121 Medicare; modifier PT for screening that becomes diagnostic), and GI bundling.
Questions
150 scored questions
Time Limit
5 hours 40 minutes
Passing Score
70%
Exam Fee
$299 AAPC member (AAPC)
CGIC Exam Content Outline
GI Anatomy and Pathophysiology
GI tract from oral cavity through anus; accessory organs; colon segments
CPT Endoscopy
EGD 43235-43259, colonoscopy 45378-45398, ERCP 43260-43278, sigmoidoscopy, capsule
CPT GI Surgery and Hepatobiliary
Cholecystectomy, appendectomy, bowel resection, liver biopsy
ICD-10-CM GI Diagnoses
K20-K31 esophageal/gastric, K50-K52 IBD, K70-K77 liver, K80-K87 gallbladder/pancreas
Modifiers, E/M and Bundling
33 preventive (ACA mandated), 53 discontinued, PT screening to diagnostic, 51, 59
Compliance, Screening Rules and Payer Policies
USPSTF colon screening 45-75, Medicare every 24 mo high-risk / 120 mo avg risk
How to Pass the CGIC Exam
What You Need to Know
- Passing score: 70%
- Exam length: 150 questions
- Time limit: 5 hours 40 minutes
- Exam fee: $299 AAPC member
Keys to Passing
- Complete 500+ practice questions
- Score 80%+ consistently before scheduling
- Focus on highest-weighted sections
- Use our AI tutor for tough concepts
CGIC Study Tips from Top Performers
Frequently Asked Questions
What's the difference between G0105, G0121, and 45378 for colonoscopy?
G0105 = Medicare screening colonoscopy for HIGH-RISK patient (personal/family history of colorectal cancer, IBD, etc.). G0121 = Medicare screening for AVERAGE-RISK (no high-risk factors). 45378 = diagnostic colonoscopy (commercial payers also use this for screening; check payer rules). If a screening colonoscopy becomes therapeutic (e.g., polyp removed), Medicare requires modifier PT (Colorectal Cancer Screening Test; converted to diagnostic) on the therapeutic code.
What is the screening colonoscopy interval?
Per USPSTF 2021, average-risk screening starts at age 45 (changed from 50). Medicare covers screening every 24 months for HIGH-risk patients and every 120 months (10 years) for average-risk patients. ASA polyp surveillance: 1-2 small adenomas → 7-10 yr; 3-10 adenomas or 1+ large adenoma (≥10 mm) → 3-5 yr; sessile serrated polyp → 3-5 yr; family history of CRC affects intervals.
When do I use modifier 33?
Modifier 33 (Preventive Services) is appended when the primary purpose is delivery of an evidence-based ACA-mandated preventive service that should be covered without copay. Example: screening colonoscopy 45378 on commercial payer. Helps the payer correctly waive cost-sharing. Do NOT use 33 with Medicare screening codes G0105/G0121 (those are inherently preventive).