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100+ Free AMBA CMRS Practice Questions

Pass your Certified Medical Reimbursement Specialist exam on the first try — instant access, no signup required.

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Which claim form is used by physicians and non-institutional providers to submit professional service claims?

A
B
C
D
to track
2026 Statistics

Key Facts: AMBA CMRS Exam

85%

Passing Score

AMBA

800+

Exam Questions

AMBA official

45 days

Exam Window

Online open-book

$505

Member Fee

AMBA 2026

15 CEUs

Annual Renewal

7.5 must be from AMBA

$48,780

Median Biller Salary

BLS 2024

The AMBA CMRS is a 800+ question online open-book exam requiring 85% to pass, taken within a 45-day window. Fees: $505 for AMBA members and $655 for non-members (annual membership $99). Two free retakes allowed with 30-60 days between attempts. Holders must earn 15 CEUs annually (7.5 from AMBA) to maintain certification. CMRS recognition earns medical billers an average of $48,780/year (BLS medical records specialists 2024) with 9% growth projected through 2034.

Sample AMBA CMRS Practice Questions

Try these sample questions to test your AMBA CMRS exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1Which claim form is used by physicians and non-institutional providers to submit professional service claims?
A.CMS-1500
B.UB-04
C.CMS-1450
D.CMS-2728
Explanation: The CMS-1500 (HCFA-1500) is the standard paper claim form used by physicians and non-institutional providers to bill Medicare and most commercial payers for professional services. It maps to the electronic 837P transaction.
2Which electronic transaction standard is used to submit institutional (hospital) claims under HIPAA?
A.837P
B.837I
C.835
D.270
Explanation: The 837I (Institutional) is the HIPAA X12N standard electronic transaction for submitting institutional/facility claims (the electronic equivalent of the UB-04). 837P is for professional claims, 835 is for remittance advice, and 270 is for eligibility inquiry.
3ICD-10-CM codes have a maximum of how many characters?
A.5
B.6
C.7
D.10
Explanation: ICD-10-CM codes can be up to 7 characters long. The first three characters are the category, characters 4-6 add anatomic site, severity, and other detail, and the 7th character is an extension typically used for injury/fracture encounter (A = initial, D = subsequent, S = sequela).
4In ICD-10-CM, what does a 7th character 'A' indicate for an injury or fracture code?
A.Initial encounter
B.Subsequent encounter
C.Sequela
D.Admitted through the emergency department
Explanation: For ICD-10-CM injury codes, the 7th character 'A' indicates the initial encounter — the patient is receiving active treatment for the injury. 'D' is subsequent encounter (routine healing), and 'S' is sequela (a late effect).
5What does CPT stand for?
A.Current Procedural Terminology
B.Coded Physician Terminology
C.Clinical Procedural Taxonomy
D.Certified Procedural Tables
Explanation: CPT stands for Current Procedural Terminology. It is a coding system maintained by the American Medical Association (AMA) used to report medical, surgical, and diagnostic procedures and services.
6HCPCS Level II J-codes are used to report what?
A.Physician evaluation and management services
B.Drugs administered other than oral method
C.Durable medical equipment rentals
D.Ambulance transportation
Explanation: HCPCS Level II J-codes are used to report drugs administered other than by oral method — primarily injectable drugs and chemotherapy agents billed separately from the administration code.
7What is the timely filing limit for submitting original Medicare fee-for-service claims?
A.90 days from date of service
B.180 days from date of service
C.One calendar year from date of service
D.Three years from date of service
Explanation: Medicare Fee-For-Service requires that claims be filed no later than one calendar year (12 months) after the date of service. Claims submitted after this limit are denied with no appeal rights for timely filing.
8EOB stands for what in medical billing?
A.Explanation of Benefits
B.Estimate of Billing
C.Evidence of Balance
D.Electronic Order Book
Explanation: EOB is the Explanation of Benefits, a document sent by the payer to the patient (and provider) showing what was billed, what was allowed, what the insurance paid, any patient responsibility, and denial/adjustment reasons. The electronic equivalent for providers is the ERA (835).
9Which type of insurance pays first when a patient has multiple insurance plans?
A.Primary insurance
B.Secondary insurance
C.Tertiary insurance
D.Supplemental insurance
Explanation: Primary insurance pays first on a claim. Once the primary adjudicates and pays (or denies), the remaining balance is submitted to the secondary plan per coordination of benefits (COB) rules. Tertiary pays last.
10What does HIPAA stand for?
A.Health Insurance Portability and Accountability Act
B.Health Information Privacy and Access Act
C.Healthcare Integrity and Protection Act
D.Hospital Insurance Payment and Accounting Act
Explanation: HIPAA is the Health Insurance Portability and Accountability Act of 1996. It established national standards for electronic healthcare transactions, protected health information (Privacy Rule), security safeguards (Security Rule), and breach notification.

About the AMBA CMRS Exam

The AMBA Certified Medical Reimbursement Specialist (CMRS) is the flagship credential for professional medical billers. The 2026 exam contains 800+ questions spanning 18 content areas — medical terminology, ICD-10-CM/PCS, CPT/HCPCS, HIPAA, Medicare, Medicaid, managed care, CMS-1500/UB-04, 837/835 EDI, fraud/abuse, denials, and revenue cycle.

Questions

800 scored questions

Time Limit

45-day window, online open-book

Passing Score

85%

Exam Fee

$505 (AMBA member) / $655 (non-member) (American Medical Billing Association (AMBA))

AMBA CMRS Exam Content Outline

20%

Medical Terminology, Anatomy and Coding Fundamentals

Body systems, prefixes/suffixes/roots, ICD-10-CM structure and guidelines, CPT E/M 2021+ MDM, HCPCS Level II

25%

Claim Submission and Electronic Transactions

CMS-1500, UB-04, 837P/837I, 835 ERA, 270/271, clearinghouses, NPI, claim scrubbing

20%

Payer-Specific Billing

Medicare Parts A/B/C/D, IPPS/OPPS, MPFS/RBRVS, Medicaid, managed care (HMO/PPO/EPO), workers' comp, COB

15%

Denials, Appeals and Revenue Cycle Management

CARC/RARC, 5-level Medicare appeals, clean claim rate, days in A/R, net collection rate

20%

Compliance, HIPAA and Fraud/Abuse

HIPAA Privacy/Security/Breach, ABN, False Claims Act, Anti-Kickback, Stark, OIG LEIE, RAC/CERT audits, No Surprises Act

How to Pass the AMBA CMRS Exam

What You Need to Know

  • Passing score: 85%
  • Exam length: 800 questions
  • Time limit: 45-day window, online open-book
  • Exam fee: $505 (AMBA member) / $655 (non-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

AMBA CMRS Study Tips from Top Performers

1Master ICD-10-CM structure (7 characters, Excludes1 vs Excludes2, 7th character A/D/S) — it anchors multiple exam areas
2Drill the most-tested modifiers: 25, 59, 51, 57, 78, 79, 24, 50, 26/TC, LT/RT, GA/GY/GZ
3Memorize HIPAA X12 transactions: 270/271 (eligibility), 276/277 (status), 278 (auth), 835 (ERA), 837 (claim)
4Know the 5 Medicare appeal levels: MAC redetermination → QIC reconsideration → ALJ hearing → Council → Federal Court
5Because the exam is open-book, build a quick-reference cheat sheet (fee schedule formulas, CARC code groups, global periods, ABN modifiers)

Frequently Asked Questions

What is the AMBA CMRS passing score?

The AMBA CMRS exam requires 85% or higher to pass. If you do not pass, AMBA allows two free retakes with 30-60 days between attempts. The exam is online, open-book, and taken within a 45-day window from signup, so you have time to look up references — but you still need strong command of medical billing concepts.

How much does the AMBA CMRS exam cost in 2026?

The CMRS exam fee is $505 for AMBA members and $655 for non-members. AMBA membership is $99 per year (and is required to sit for the exam — so most candidates pay $99 + $505 = $604). The optional AMBA CMRS Study Guide is $199 in PDF. Free study resources like our practice bank can substantially reduce total prep cost.

How many questions are on the AMBA CMRS exam?

The CMRS exam contains 800+ questions across 18 content areas. It is delivered online and is open-book, but you have 45 days from signup to complete — an average of ~18 questions per day if you pace it evenly. Most candidates complete it in 2-4 weeks of focused effort.

What are the prerequisites for the AMBA CMRS?

There is no formal education prerequisite, but candidates must be active AMBA members to sit for the exam. AMBA recommends candidates have billing experience or have completed a billing course. Our free 100-question practice bank + AI tutor helps candidates with all experience levels prepare efficiently.

How do I maintain my CMRS certification?

CMRS holders must earn 15 continuing education units (CEUs) annually, with at least 7.5 of those coming from AMBA sources (training, webinars, seminars, chapter meetings, or pre-approved vendors). CEUs must be earned by your anniversary date each year. Non-pre-approved CEUs count at half-value.

Is the CMRS worth it for medical billers?

Yes — the CMRS is a widely recognized credential by employers in physician offices, hospitals, and billing companies. BLS data for medical records specialists (2024) shows median pay of $48,780 and 9% growth projected 2024-2034. Certified billers typically earn 10-20% more than uncertified peers and have stronger career mobility.

How long should I study for the CMRS?

Plan 80-120 hours of focused study over 4-8 weeks. The 45-day exam window lets you study actively while taking sections of the exam. Focus on ICD-10-CM guidelines, CPT E/M 2021+ MDM, modifier usage (25, 59, LT/RT, 26/TC), CMS-1500/UB-04 fields, HIPAA transactions (837/835/270/271), and denial management with CARC/RARC codes.