CPB (Certified Professional Biller (AAPC)) — Free Online Mock Test
AAPC medical billing credential. 135 multiple-choice on claim cycle, CMS-1500 / UB-04, payer policies, denials, AR follow-up, HIPAA, compliance. 4 hours · 70% to pass. · Official language: English.
CPB exam at a glance
CPB full-length mock tests
Attempt 50 full-length CPB mock tests, each a distinct question set built on the real 135-question, 240-minute pattern — with instant scoring and section-wise analysis. The first 3 are free.
See all 50 CPB mock tests →CPB key facts & eligibility
| Conducting body | AAPC |
|---|---|
| Official website | aapc.com ↗ |
| Mode | Proctored, open-book examination (approved references allowed), at a test centre or via live remote proctoring. |
| Scoring & marking | The CPB exam is a 4-hour open-book test (about 135 questions) covering the full medical-billing cycle — the claims process and clean-claim submission, insurance and payer types, reimbursement and the revenue cycle, denials and appeals, patient collections, and billing compliance and regulations (HIPAA, fraud and abuse). |
| Score validity | Maintained through AAPC membership and continuing education units (CEUs). |
| Language | English. |
Who is eligible for CPB?
No strict prerequisite to sit; AAPC recommends billing education and experience, and full certification requires two years of experience.
Last verified July 2026 against Certified Professional Biller (CPB) — AAPC. Always confirm current details on the official website before you register.
CPB section breakdown
The CPB mock test on Wrexa Edge replicates the real exam's section structure — same names, same question count per section, same time limits. No inter-section breaks — the timer runs continuously.
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CPB Full Exam (135 Q)
CPB scoring & marking scheme
Strategy: CPB has no negative marking. Attempt every question — blank answers cost you potential marks but cannot pull your score down.
Scale: CPB (pass 70%).
How CPB is conducted
- Mode
- Test format
- Backtracking
- Mark for review
CPB time strategy
With 135 questions in 240 minutes, you have about 107 seconds per question on average. Successful candidates aim for the following pacing on each section:
- CPB Full Exam (135 Q)
Wrexa Edge's analytics show your actual time-per-question after every mock so you can spot which sections you're losing time on.
CPB topics covered
Across the 50 Wrexa Edge variants of CPB, the following topics appear most often (sample distribution from one variant):
CPB Full Exam (135 Q)
- ICD-10-CM · 20
- Claims / Billing · 16
- CPT — Modifiers · 15
- Payment policy · 8
- CPT — E/M · 7
- ICD-10-PCS · 7
- HCPCS · 6
- IPPS / POA · 5
CPB difficulty calibration
Intermediate tier. Intermediate-level: assumes a working command of the syllabus. Most candidates need 2-4 months of focused prep.
AAPC medical billing credential. 135 multiple-choice on claim cycle, CMS-1500 / UB-04, payer policies, denials, AR follow-up, HIPAA, compliance. 4 hours · 70% to pass. · Official language: English.
Verified content — Wrexa Edge's CPB bank has been deeply curated with real exam-aligned content (estimated 100% syllabus coverage).
How Wrexa Edge prepares you for CPB
- Real test-day interface
- 50 distinct variants
- Detailed analytics
- Spaced repetition (Notebook)
- Optional proctoring
- Free to start
CPB study plan
A phase-by-phase roadmap from your first concept to test-ready. Stretch or compress each phase to fit the time you have before your attempt.
- The claims process and clean-claim submission
- Insurance and payer types; the revenue cycle
- Reimbursement methodologies
- Denials, appeals and patient collections
- HIPAA, fraud, abuse and billing compliance
- Applied billing scenarios
- Full-length CPB practice under the 4-hour format
- Refine speed on scenario questions
- Target weak areas
Where CPB can take you
A strong CPB result opens up these careers and higher-study paths:
- Medical biller
- Revenue-cycle careers
- Remote-work potential
- Practice-management path
Best books & official prep for CPB
- AAPC Certified Professional Biller (CPB) Study Guide — AAPC
- AAPC CPB practice exams — AAPC
Official practice: Learn the end-to-end revenue cycle and payer rules; the exam is scenario-heavy on denials, appeals and compliance, so practise applied billing situations.
Previous-year papers: AAPC provides official practice exams rather than released past papers.
Frequently asked questions
- What is the CPB exam pattern?
- Certified Professional Biller (AAPC) contains 135 questions across 1 section: CPB Full Exam (135 Q). Total duration is 240 minutes (about 107 seconds per question).
- Does CPB have negative marking?
- No — CPB has no negative marking. Each correct answer is worth 1 mark, so attempt every question.
- How is CPB scored?
- Scaled score range: 100 to 1000. CPB (pass 70%).
- How can I practise CPB online for free?
- Wrexa Edge gives you 3 free full-length CPB mock tests — with instant scoring, detailed explanations and analytics — plus 47 more with Pro. Start practising in under a minute, no card required.
- What is the difficulty level of CPB?
- CPB is rated Intermediate difficulty on Wrexa Edge. Intermediate-level: assumes a working command of the syllabus. Most candidates need 2-4 months of focused prep. AAPC medical billing credential. 135 multiple-choice on claim cycle, CMS-1500 / UB-04, payer policies, denials, AR follow-up, HIPAA, compliance. 4 hours · 70% to pass. · Official language: English.
- How long is the CPB exam?
- CPB runs for 240 minutes total. On Wrexa Edge the timer is enforced exactly as on the real exam — including no inter-section breaks.
- What topics are covered in CPB?
- CPB is split into: CPB Full Exam (135 Q). Each section is timed and weighted separately. AAPC medical billing credential. 135 multiple-choice on claim cycle, CMS-1500 / UB-04, payer policies, denials, AR follow-up, HIPAA, compliance. 4 hours · 70% to pass. · Official language: English.
- What tools or aids are allowed during CPB?
- No special tools are required. Note: real exam is proctored — Wrexa Edge mirrors this with a webcam-based proctoring flow you can enable.
- Is the CPB test adaptive?
- No — CPB is a fixed-form (linear) test. Every candidate sees the same number of questions per section.
- How many CPB mock tests does Wrexa Edge offer?
- Wrexa Edge generates 50 distinct CPB variants — each with different question content, not just shuffled options — the first 3 free for everyone and 47 more with Pro. That's 6750 unique practice questions in the real test-day interface.
- Is there a free CPB test series 2026?
- Yes. The Wrexa Edge CPB test series for 2026 gives you 3 free full-length mock tests (50 in total) plus subject-wise and topic-wise tests — instant scoring and detailed analysis, no card required.
- Are CPB previous year question–style papers included?
- Every CPB mock is modelled on the official exam pattern and the style of previous years' papers — the same 135-question structure, sections and marking — so your practice mirrors the real paper you'll sit.
- Which is the best free CPB mock test online?
- Wrexa Edge's CPB mock test replicates the real exam interface, timing and marking scheme, with instant score, section-wise analysis and 50 fresh variants — a strong free choice for 2026 preparation.
- Can I take the CPB mock test on mobile?
- Yes. CPB mock tests run in any browser on mobile, tablet or desktop — no app or download needed. Start on your phone and your progress and analytics sync when you sign in.
- What is the CPB syllabus?
- The CPB syllabus maps to its 1 section: CPB Full Exam (135 Q). Wrexa Edge's mock tests cover the complete syllabus topic by topic — see the topics-covered breakdown above — so you practise every area at real exam difficulty.
- What is the eligibility for CPB?
- No strict prerequisite to sit; AAPC recommends billing education and experience, and full certification requires two years of experience. Wrexa Edge focuses on realistic CPB practice: 3 free full-length mocks in the exact exam pattern, ready whenever you are.
- When is the CPB exam and how should I prepare?
- Official CPB exam dates are announced by the conducting body for each cycle — check the latest notification for the current schedule. To be ready, follow a phased study plan and take full-length timed mocks; Wrexa Edge gives you 3 free CPB mocks with instant scoring so you can track your readiness week by week.
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