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AAPC CPB Exam 2026: Certified Professional Biller Format, Passing Score & Sample Questions

Audio from the Open Exam Hub video of the same name; the video shows the numbers and practice questions on screen.

CPB exam 2026: format, passing score and 12 sample questions for the AAPC Certified Professional Biller. As of October 2026, AAPC lists the CPB exam as 135 multiple choice questions in 4 hours, open book with approved code books (CPT, ICD-10-CM, HCPCS Level II), with 70% to pass (95 correct), at home with a live proctor or at a testing center. One attempt is $425 and two attempts are $499. This guide covers the AAPC CPB exam format, the seven content domains and how many questions each has, CPB vs CPC vs CBCS, a study plan (our estimate), and a CPB practice test with 12 original sample questions and explanations. Independent guide, not affiliated with AAPC. CPB and AAPC are registered trademarks of AAPC.

Full guide
Free practice questions, study guides and cheat sheets, no signup

Chapters
0:00 AAPC CPB exam guide
4:37 Section 1: Claims and Forms: Questions 1 to 4
7:39 Section 2: Payers and Payments: Questions 5 to 8
10:38 Section 3: Coding and Cycle: Questions 9 to 12
13:17 Score yourself

Exam facts are from the official AAPC (aapc.com) pages as of 2026-10-20. Fees and rules can change, so confirm on the official site before you enroll. Open Exam Hub is an independent study resource, not affiliated with AAPC. Practice questions are not from a real exam. Narration is an AI-generated voice.

Music
"Fresh Air" Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 4.0 License
creativecommons.org/licenses/by/4.0

"Carefree" Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 4.0 License
creativecommons.org/licenses/by/4.0

"Reminiscing" Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 4.0 License
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Sound effects: Kenney (kenney.nl), CC0.

Images
"A waiting room at a medical healthcare clinic, doctor's office, hospital" by Harrison Keely, CC BY 4.0, via Wikimedia Commons commons.wikimedia.org/wiki/File:A_waiting_room_at_a_medical_healthcare_clinic,_doctor%27s_office,_hospital.jpg
"Modern reception area with sleek design" by Shixart1985, CC BY 2.0, via Wikimedia Commons commons.wikimedia.org/wiki/File:Modern_reception_area_with_sleek_design.jpg
"Desktop with laptop and calculator (Unsplash)" by AnonymousUnknown author, CC0, via Wikimedia Commons commons.wikimedia.org/wiki/File:Desktop_with_laptop_and_calculator_(Unsplash).jpg

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