CBCS Billing and Coding Practice Exam Study Guide Updated 2026
| Verified Questions and Answers with Detailed Rationales |
Medical Billing Cycle, Insurance Claims Processing, ICD-10-CM CPT and
HCPCS Coding Systems, Revenue Cycle Management, Patient Billing and
Collections, Medicare and Medicaid Guidelines, HIPAA Compliance, Fraud
Waste and Abuse Prevention, Medical Documentation, Electronic Health
Records (EHR), NHA CBCS Certification Exam Prep | Complete Exam Prep
Resource for Billing and Coding Certification Success
Question 1: What is the primary purpose of the ICD-10-CM coding system in
medical billing and coding practice?
A. To determine physician reimbursement rates for surgical procedures
B. To classify and code diagnoses, symptoms, and reasons for patient encounters
C. To standardize the billing format for institutional claims submitted on UB-04 forms
D. To assign procedural codes for outpatient services rendered in ambulatory settings
CORRECT ANSWER: B. To classify and code diagnoses, symptoms, and reasons for
patient encounters
RATIONALE: ICD-10-CM (International Classification of Diseases, 10th Revision,
Clinical Modification) is specifically designed to classify and code all diagnoses,
symptoms, and reasons for encounters in healthcare settings. It provides standardized
terminology for documenting patient conditions, which supports accurate billing,
epidemiological tracking, and clinical decision-making. Options A, C, and D describe
functions more closely associated with CPT, HCPCS, or claim form standards, not ICD-
10-CM.
Question 2: Which CPT code category is used to report evaluation and management
(E/M) services?
A. Category I
B. Category II
C. Category III
D. Category IV
CORRECT ANSWER: A. Category I
RATIONALE: CPT Category I codes represent procedures and services widely accepted
in medical practice, including the Evaluation and Management (E/M) section (codes
99202–99499). Category II codes are supplemental tracking codes for performance
measurement, Category III are temporary codes for emerging technologies, and
Category IV does not exist in the CPT structure. E/M services are foundational to patient
encounters and are exclusively reported using Category I codes.
Question 3: When reporting a bilateral procedure performed during the same
session, which modifier should typically be appended to the CPT code?
,A. -25
B. -50
C. -59
D. -LT
CORRECT ANSWER: B. -50
RATIONALE: Modifier -50 specifically indicates that a procedure was performed
bilaterally (on both sides of the body) during the same operative session. Modifier -25
denotes a significant, separately identifiable E/M service on the same day; -59 identifies
distinct procedural services; and -LT specifies the left side only. Using -50 ensures
appropriate reimbursement for bilateral procedures per payer policies and CPT
guidelines.
Question 4: Which of the following best describes the function of the CMS-1500
claim form?
A. It is used exclusively for inpatient hospital billing under Medicare Part A
B. It is the standard paper claim form for submitting professional services by non-
institutional providers
C. It is required for all electronic claims submission regardless of provider type
D. It is used to report facility fees for ambulatory surgical centers
CORRECT ANSWER: B. It is the standard paper claim form for submitting
professional services by non-institutional providers
RATIONALE: The CMS-1500 form (also known as the HCFA-1500) is the standardized
paper claim form used by physicians, suppliers, and other non-institutional providers to
bill Medicare, Medicaid, and many private insurers for professional services. Inpatient
hospital billing uses the UB-04 form (CMS-1450), electronic claims follow ANSI X12 837
formats, and facility fees for ASCs are typically billed on UB-04. Option B accurately
reflects the CMS-1500's primary use.
Question 5: According to CPT guidelines, what is the key factor that distinguishes a
new patient from an established patient for E/M coding?
A. Whether the patient has seen any provider in the same specialty within the past three
years
B. Whether the patient has received any professional services from the physician or
another physician of the same specialty and subspecialty in the same group within the
past three years
C. Whether the patient has been seen in the same geographic location within the past
12 months
D. Whether the patient has a prior diagnosis coded in the medical record
CORRECT ANSWER: B. Whether the patient has received any professional services
from the physician or another physician of the same specialty and subspecialty in
the same group within the past three years
,RATIONALE: CPT defines a new patient as one who has not received any professional
services from the physician or another physician of the exact same specialty and
subspecialty who belongs to the same group practice within the previous three years.
This definition is specialty-specific and group-practice-specific, not based on
geography, diagnosis, or any provider encounter. Accurate application prevents
upcoding or downcoding of E/M services.
Question 6: Which HCPCS Level II code series is designated for reporting durable
medical equipment (DME)?
A. A0000–A0999
B. E0100–E9999
C. J0000–J9999
D. L0000–L9999
CORRECT ANSWER: B. E0100–E9999
RATIONALE: HCPCS Level II codes in the E0100–E9999 range are specifically assigned
to durable medical equipment (DME), such as wheelchairs, walkers, and oxygen
equipment. A-codes cover transportation and medical supplies, J-codes represent
injectable drugs, and L-codes are for orthotic and prosthetic procedures. Proper code
selection ensures accurate DME billing and compliance with Medicare DMEPOS
guidelines.
Question 7: What is the correct sequencing rule for reporting multiple diagnoses in
ICD-10-CM?
A. Always list the code with the highest reimbursement value first
B. List the reason for the encounter (principal diagnosis) first, followed by additional
conditions that affect care
C. List chronic conditions before acute conditions regardless of encounter reason
D. List codes in alphabetical order by code descriptor
CORRECT ANSWER: B. List the reason for the encounter (principal diagnosis) first,
followed by additional conditions that affect care
RATIONALE: ICD-10-CM Official Guidelines for Coding and Reporting require that the
principal diagnosis—the condition chiefly responsible for the encounter—be
sequenced first. Additional diagnoses that coexist, affect treatment, or require clinical
evaluation should follow. This sequencing supports medical necessity, accurate risk
adjustment, and appropriate reimbursement. Reimbursement value, chronicity, or
alphabetical order are not valid sequencing criteria.
Question 8: Which modifier indicates that a procedure was reduced or eliminated
at the physician's discretion?
A. -52
B. -53
, C. -73
D. -74
CORRECT ANSWER: A. -52
RATIONALE: Modifier -52 is used to report that a service or procedure was partially
reduced or eliminated at the physician's discretion, without discontinuation due to
extenuating circumstances. Modifier -53 applies to procedures terminated due to
patient risk after anesthesia or procedure initiation; -73 and -74 relate to discontinued
outpatient hospital procedures. Correct modifier usage ensures accurate claim
adjudication and prevents denial for unbundling or overbilling.
Question 9: In medical billing, what does the term "clean claim" refer to?
A. A claim that has been paid in full by the insurance carrier
B. A claim that contains no errors, omissions, or inconsistencies and meets all payer
requirements for processing
C. A claim submitted electronically with a digital signature
D. A claim that has been adjusted after initial denial
CORRECT ANSWER: B. A claim that contains no errors, omissions, or
inconsistencies and meets all payer requirements for processing
RATIONALE: A "clean claim" is one that is complete, accurate, and compliant with
payer-specific rules, allowing it to be processed without delay, rejection, or request for
additional information. Clean claims reduce accounts receivable days and improve
revenue cycle efficiency. Payment status, submission method, or post-denial
adjustments do not define a clean claim; accuracy and completeness at submission
do.
Question 10: Which of the following is a required element for establishing medical
necessity on a claim?
A. Inclusion of the patient's social security number
B. Documentation linking the diagnosis code to the procedure code performed
C. Use of a specific font size on the claim form
D. Submission of the claim within 30 days of service
CORRECT ANSWER: B. Documentation linking the diagnosis code to the procedure
code performed
RATIONALE: Medical necessity requires that the services billed are reasonable and
necessary for the diagnosis or treatment of an illness or injury, as supported by clinical
documentation. The linkage between the ICD-10-CM diagnosis code and the
CPT/HCPCS procedure code demonstrates this necessity. While timely filing and
patient identifiers are important administrative requirements, they do not establish
medical necessity, which is a clinical and compliance cornerstone.
| Verified Questions and Answers with Detailed Rationales |
Medical Billing Cycle, Insurance Claims Processing, ICD-10-CM CPT and
HCPCS Coding Systems, Revenue Cycle Management, Patient Billing and
Collections, Medicare and Medicaid Guidelines, HIPAA Compliance, Fraud
Waste and Abuse Prevention, Medical Documentation, Electronic Health
Records (EHR), NHA CBCS Certification Exam Prep | Complete Exam Prep
Resource for Billing and Coding Certification Success
Question 1: What is the primary purpose of the ICD-10-CM coding system in
medical billing and coding practice?
A. To determine physician reimbursement rates for surgical procedures
B. To classify and code diagnoses, symptoms, and reasons for patient encounters
C. To standardize the billing format for institutional claims submitted on UB-04 forms
D. To assign procedural codes for outpatient services rendered in ambulatory settings
CORRECT ANSWER: B. To classify and code diagnoses, symptoms, and reasons for
patient encounters
RATIONALE: ICD-10-CM (International Classification of Diseases, 10th Revision,
Clinical Modification) is specifically designed to classify and code all diagnoses,
symptoms, and reasons for encounters in healthcare settings. It provides standardized
terminology for documenting patient conditions, which supports accurate billing,
epidemiological tracking, and clinical decision-making. Options A, C, and D describe
functions more closely associated with CPT, HCPCS, or claim form standards, not ICD-
10-CM.
Question 2: Which CPT code category is used to report evaluation and management
(E/M) services?
A. Category I
B. Category II
C. Category III
D. Category IV
CORRECT ANSWER: A. Category I
RATIONALE: CPT Category I codes represent procedures and services widely accepted
in medical practice, including the Evaluation and Management (E/M) section (codes
99202–99499). Category II codes are supplemental tracking codes for performance
measurement, Category III are temporary codes for emerging technologies, and
Category IV does not exist in the CPT structure. E/M services are foundational to patient
encounters and are exclusively reported using Category I codes.
Question 3: When reporting a bilateral procedure performed during the same
session, which modifier should typically be appended to the CPT code?
,A. -25
B. -50
C. -59
D. -LT
CORRECT ANSWER: B. -50
RATIONALE: Modifier -50 specifically indicates that a procedure was performed
bilaterally (on both sides of the body) during the same operative session. Modifier -25
denotes a significant, separately identifiable E/M service on the same day; -59 identifies
distinct procedural services; and -LT specifies the left side only. Using -50 ensures
appropriate reimbursement for bilateral procedures per payer policies and CPT
guidelines.
Question 4: Which of the following best describes the function of the CMS-1500
claim form?
A. It is used exclusively for inpatient hospital billing under Medicare Part A
B. It is the standard paper claim form for submitting professional services by non-
institutional providers
C. It is required for all electronic claims submission regardless of provider type
D. It is used to report facility fees for ambulatory surgical centers
CORRECT ANSWER: B. It is the standard paper claim form for submitting
professional services by non-institutional providers
RATIONALE: The CMS-1500 form (also known as the HCFA-1500) is the standardized
paper claim form used by physicians, suppliers, and other non-institutional providers to
bill Medicare, Medicaid, and many private insurers for professional services. Inpatient
hospital billing uses the UB-04 form (CMS-1450), electronic claims follow ANSI X12 837
formats, and facility fees for ASCs are typically billed on UB-04. Option B accurately
reflects the CMS-1500's primary use.
Question 5: According to CPT guidelines, what is the key factor that distinguishes a
new patient from an established patient for E/M coding?
A. Whether the patient has seen any provider in the same specialty within the past three
years
B. Whether the patient has received any professional services from the physician or
another physician of the same specialty and subspecialty in the same group within the
past three years
C. Whether the patient has been seen in the same geographic location within the past
12 months
D. Whether the patient has a prior diagnosis coded in the medical record
CORRECT ANSWER: B. Whether the patient has received any professional services
from the physician or another physician of the same specialty and subspecialty in
the same group within the past three years
,RATIONALE: CPT defines a new patient as one who has not received any professional
services from the physician or another physician of the exact same specialty and
subspecialty who belongs to the same group practice within the previous three years.
This definition is specialty-specific and group-practice-specific, not based on
geography, diagnosis, or any provider encounter. Accurate application prevents
upcoding or downcoding of E/M services.
Question 6: Which HCPCS Level II code series is designated for reporting durable
medical equipment (DME)?
A. A0000–A0999
B. E0100–E9999
C. J0000–J9999
D. L0000–L9999
CORRECT ANSWER: B. E0100–E9999
RATIONALE: HCPCS Level II codes in the E0100–E9999 range are specifically assigned
to durable medical equipment (DME), such as wheelchairs, walkers, and oxygen
equipment. A-codes cover transportation and medical supplies, J-codes represent
injectable drugs, and L-codes are for orthotic and prosthetic procedures. Proper code
selection ensures accurate DME billing and compliance with Medicare DMEPOS
guidelines.
Question 7: What is the correct sequencing rule for reporting multiple diagnoses in
ICD-10-CM?
A. Always list the code with the highest reimbursement value first
B. List the reason for the encounter (principal diagnosis) first, followed by additional
conditions that affect care
C. List chronic conditions before acute conditions regardless of encounter reason
D. List codes in alphabetical order by code descriptor
CORRECT ANSWER: B. List the reason for the encounter (principal diagnosis) first,
followed by additional conditions that affect care
RATIONALE: ICD-10-CM Official Guidelines for Coding and Reporting require that the
principal diagnosis—the condition chiefly responsible for the encounter—be
sequenced first. Additional diagnoses that coexist, affect treatment, or require clinical
evaluation should follow. This sequencing supports medical necessity, accurate risk
adjustment, and appropriate reimbursement. Reimbursement value, chronicity, or
alphabetical order are not valid sequencing criteria.
Question 8: Which modifier indicates that a procedure was reduced or eliminated
at the physician's discretion?
A. -52
B. -53
, C. -73
D. -74
CORRECT ANSWER: A. -52
RATIONALE: Modifier -52 is used to report that a service or procedure was partially
reduced or eliminated at the physician's discretion, without discontinuation due to
extenuating circumstances. Modifier -53 applies to procedures terminated due to
patient risk after anesthesia or procedure initiation; -73 and -74 relate to discontinued
outpatient hospital procedures. Correct modifier usage ensures accurate claim
adjudication and prevents denial for unbundling or overbilling.
Question 9: In medical billing, what does the term "clean claim" refer to?
A. A claim that has been paid in full by the insurance carrier
B. A claim that contains no errors, omissions, or inconsistencies and meets all payer
requirements for processing
C. A claim submitted electronically with a digital signature
D. A claim that has been adjusted after initial denial
CORRECT ANSWER: B. A claim that contains no errors, omissions, or
inconsistencies and meets all payer requirements for processing
RATIONALE: A "clean claim" is one that is complete, accurate, and compliant with
payer-specific rules, allowing it to be processed without delay, rejection, or request for
additional information. Clean claims reduce accounts receivable days and improve
revenue cycle efficiency. Payment status, submission method, or post-denial
adjustments do not define a clean claim; accuracy and completeness at submission
do.
Question 10: Which of the following is a required element for establishing medical
necessity on a claim?
A. Inclusion of the patient's social security number
B. Documentation linking the diagnosis code to the procedure code performed
C. Use of a specific font size on the claim form
D. Submission of the claim within 30 days of service
CORRECT ANSWER: B. Documentation linking the diagnosis code to the procedure
code performed
RATIONALE: Medical necessity requires that the services billed are reasonable and
necessary for the diagnosis or treatment of an illness or injury, as supported by clinical
documentation. The linkage between the ICD-10-CM diagnosis code and the
CPT/HCPCS procedure code demonstrates this necessity. While timely filing and
patient identifiers are important administrative requirements, they do not establish
medical necessity, which is a clinical and compliance cornerstone.
