AAPC Certified Professional Biller Practice Test PDF (Free Printable 2026)

AAPC CPB Practice Test PDF: Certified Professional Biller Exam Preparation

The AAPC Certified Professional Biller (CPB) credential validates expertise in the complete revenue cycle — from charge capture through remittance and collections. The CPB exam tests 135 scored questions across billing workflow, claim forms, payer rules, coding basics, compliance, and patient financial services. This free printable PDF provides practice questions covering every exam domain so you can study offline and identify your strongest and weakest areas before exam day.

Billing Workflow

The billing workflow domain covers the end-to-end revenue cycle process. Charge capture questions test how services are captured from encounter documentation, superbills, and electronic health record charge routers, and how charge errors are identified before claim submission. Claim submission questions address filing deadlines (timely filing limits vary by payer — Medicare requires 12 months from date of service), electronic versus paper claim submission, and clearinghouse edits that catch formatting errors before claims reach payers.

Remittance processing questions cover how to interpret an Explanation of Benefits (EOB) or Electronic Remittance Advice (ERA — 835 transaction). You must be able to identify allowed amounts, contractual adjustments, patient responsibility amounts, and denial reason codes. Denial management questions test categorisation of denials (clinical, administrative, coding, and eligibility) and the appropriate response to each. Appeals questions address timely appeal filing, the internal versus external appeal distinction, and how to construct a medical necessity appeal letter using clinical documentation.

Insurance Claims

Insurance claims questions focus on two primary claim forms. The CMS-1500 is used by physicians and non-facility outpatient providers — exam questions test correct completion of key boxes including Box 21 (diagnosis codes, up to 12 ICD-10-CM codes), Box 24D (procedure codes with modifiers), Box 24E (diagnosis pointer linking procedure to diagnosis), and Box 33 (billing provider NPI). The UB-04 (CMS-1450) is used by hospitals and facilities — questions test revenue codes, occurrence codes, value codes, and condition codes that communicate facility-specific billing information unavailable on the CMS-1500.

Electronic claim formats tested include the 837P (professional) and 837I (institutional) transaction sets used in HIPAA-standard EDI claims. You should understand the relationship between the paper form and the electronic equivalent, and recognise common 277 claim status and 999 acknowledgement transactions. Secondary billing questions cover coordination of benefits (COB) — how primary and secondary payer responsibilities are determined using the birthday rule, gender rule, and active versus retired coverage rules.

Payer Rules

Payer rules questions cover Medicare, Medicaid, and commercial payer policies. Medicare questions address Part A (inpatient/facility), Part B (professional/outpatient), Part C (Medicare Advantage), and Part D (prescription drug) coverage distinctions relevant to billing. Advance Beneficiary Notices (ABNs), Medicare Secondary Payer (MSP) rules, and National Coverage Determinations (NCDs) versus Local Coverage Determinations (LCDs) are standard exam topics. Medicaid questions address state variation, eligibility verification, and billing for dual-eligible beneficiaries. Commercial payer questions cover prior authorisation requirements, network status impacts on reimbursement, and payer-specific filing requirements that differ from Medicare defaults.

Coding Basics for Billers

While the CPB exam does not require coding expertise at the level of the CPC, billers must recognise common CPT, ICD-10-CM, and HCPCS Level II code structures to identify billing errors. CPT questions for billers focus on recognising when a modifier is missing (Modifier 25, 51, 59, 76, 77, TC, 26) and identifying global surgery period rules. ICD-10-CM questions test the difference between a diagnosis code used as the principal diagnosis versus secondary diagnosis on facility claims, and how to identify incomplete or imprecise codes that will trigger denials. HCPCS Level II questions cover durable medical equipment codes, drug administration codes (J-codes), and ambulance codes (A-codes) that are billed differently from physician CPT codes.

Compliance

Compliance questions cover the legal and regulatory framework governing healthcare billing. HIPAA questions address the Privacy Rule (protected health information — PHI), the Security Rule (electronic PHI safeguards), and the Transactions and Code Sets Rule (standardised EDI formats). The False Claims Act questions test what constitutes a false claim, whistleblower (qui tam) provisions, and the difference between civil and criminal liability. Stark Law (physician self-referral) basics test the in-office ancillary services exception and the general prohibition on referrals for designated health services. The Anti-Kickback Statute questions distinguish prohibited remuneration arrangements from safe harbours. Corporate compliance programme elements — written policies, training, auditing, and reporting hotlines — round out this domain.

Patient Collections and Financial Counseling

Patient financial services questions address pre-service financial clearance, estimating patient responsibility using contracted fee schedules and benefit verification, and communicating cost estimates to patients before service. Collection questions cover balance billing rules — particularly prohibitions on balance billing Medicare and Medicaid patients beyond their cost-sharing amounts — and the Fair Debt Collection Practices Act (FDCPA) rules that govern third-party collection activities. Financial counselling questions address charity care eligibility screening, payment plan administration, and the difference between financial hardship discounts and prompt-pay discounts from a compliance perspective.

How to Use the AAPC CPB Practice Test PDF

Print the full PDF and work through each domain section under timed conditions — the real CPB exam allows 4 hours for 150 questions (135 scored, 15 unscored pretest items), so aim for roughly 1.5 minutes per question when timing yourself. After completing each section, review incorrect answers against the answer explanations and map your errors back to specific knowledge gaps. If you consistently miss remittance processing questions, spend additional study time on ERA/EOB interpretation before your next practice session.

Study groups work well for CPB preparation. One effective technique is to take turns reading denial scenario descriptions and identifying the correct denial category and response. For compliance questions, pair each statute with a real-world billing scenario to make the legal concepts concrete. The AAPC CPB exam uses scenario-based questions, so practising with situational prompts — rather than isolated definitions — builds the applied reasoning skills the exam rewards.

What to Expect on the AAPC CPB Exam

The AAPC CPB exam consists of 150 multiple-choice questions (135 scored, 15 unscored pretest) administered over 4 hours. The exam is available at Prometric test centres and via remote proctoring. A score of 70% or higher on scored questions is required to pass. Candidates may bring a printed code book tabbed for reference — specifically the CPT, ICD-10-CM, and HCPCS Level II manuals — but no electronic devices. The open-book format rewards candidates who know where to find information quickly, not just those who have memorised it.

Eligibility for the CPB exam requires AAPC membership. Candidates without prior billing experience are encouraged to complete the AAPC Professional Medical Billing course before attempting the exam. Those who already hold a CPC or other AAPC credential may find significant overlap in coding basics and compliance content, reducing preparation time for those domains. First-time candidates typically report that payer-specific rules and denial management scenarios are the most challenging sections, making targeted practice in those areas particularly valuable.