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.
Intermediate
United States
Medical Licensing
135 questions
240 min
50 distinct variants
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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.
CPB scoring & marking scheme
100–1000
Scaled score range
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
Proctored — Wrexa Edge mirrors this with a webcam-based proctoring flow (face detection, room scan, fullscreen lock, tab-switch detection).
Test format
Linear / fixed-form — every candidate sees the same number of questions per section.
Backtracking
Allowed — you can revisit and change answers within a section.
Mark for review
Available — flag tough questions and return to them before submitting the section.
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:
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
Sample CPB questions
A preview of real practice questions from the Wrexa Edge CPB bank — the same style, phrasing and difficulty you'll face on test day. Full solutions unlock free inside the mock.
CPB Full Exam (135 Q) · CPT — Sections
Q1. The CPT Radiology section uses which range?
Why: Correct answer: D — 70010-79999. Topic: CPT — Sections.
CPB Full Exam (135 Q) · CPT — Sections
Q2. The CPT Pathology and Laboratory section uses which range?
Why: Correct answer: A — 80047-89398. Topic: CPT — Sections.
CPB Full Exam (135 Q) · CPT — Sections
Q3. The CPT Medicine section (non-E/M, non-surgical) uses which range?
Why: Correct answer: B — 90281-99607. Topic: CPT — Sections.
CPB Full Exam (135 Q) · CPT — Symbols
Q4. A "+" symbol next to a CPT code indicates it is:
Why: Correct answer: C — An add-on code reported in addition to the primary procedure. Topic: CPT — Symbols.
CPB Full Exam (135 Q) · CPT — Symbols
Q5. The "⌀" (null zero / circle with slash) symbol next to a CPT code indicates:
Why: Correct answer: D — Modifier 51 exempt — cannot be appended with modifier 51. Topic: CPT — Symbols.
CPB Full Exam (135 Q) · CPT — Symbols
Q6. A bullet "●" before a CPT code indicates it is:
Why: Correct answer: A — A new code for the current edition. Topic: CPT — Symbols.
These are a handful of the 6750 unique CPB questions across all 50 Wrexa Edge variants — start a free mock to attempt the full set with instant scoring.
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
Our cert skin mirrors the actual CPB testing software — same timer, palette, tools, and navigation.
50 distinct variants
6750 unique practice questions, each variant a fresh test — not just shuffled options.
Detailed analytics
Scaled score, section accuracy, topic-wise heatmap, time-per-question — see where to focus after every attempt.
Spaced repetition (Notebook)
Wrong answers and flagged questions flow into an SM-2 spaced-repetition deck so you actually retain what you learn.
Optional proctoring
Browser-based face-api detection (no install) — turn it on to simulate real CPB test-day conditions.
Free to start
No credit card. Sign up, pick a variant, and your first CPB mock starts in under a minute.
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.
1
Phase 1 — Learn the syllabus
Weeks 1–4
- Work through every section — CPB Full Exam (135 Q) — from your core study material
- Make short notes and a formula/fact sheet you can revise quickly
- Attempt topic questions right after finishing each area
2
Phase 2 — Practice & sectionals
Weeks 5–8
- Solve previous-year and practice questions section by section
- Time yourself on CPB Full Exam (135 Q) and your weakest areas
- Keep an error log and revisit every mistake weekly
3
Phase 3 — Full-length mocks
Weeks 9–12
- Take full-length CPB mocks in the real test interface
- Analyse accuracy, time per question and silly mistakes after each mock
- Revise from notes and re-attempt only weak-topic questions
Where CPB can take you
A strong CPB result opens up these careers and higher-study paths:
Clinical practice
A pass grants the licence required to practise and treat patients in your jurisdiction.
Residency & specialisation
Qualifies you for residency, postgraduate training and specialist certification.
Hospital & public health roles
Positions across hospitals, public-health services and research institutions.
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 10 free full-length CPB mock tests — with instant scoring, detailed explanations and analytics — plus 40 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 10 free for everyone and 40 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 10 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?
- Eligibility for CPB — age, qualification and number of attempts — is set by the official conducting body and can change each cycle, so always confirm the current official notification before applying. Wrexa Edge focuses on realistic CPB practice: 10 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 10 free CPB mocks with instant scoring so you can track your readiness week by week.
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