ILLINOIS MEDICAL CODER CERTIFICATION EXAM QUESTIONS AND CORRECT ANSWERS
(VERIFIED ANSWERS) PLUS RATIONALES 2026 Q&A | INSTANT DOWNLOAD PDF
Core Domains
- Clinical Classification Systems (ICD-10-CM, ICD-10-PCS)
- CPT Coding and Procedural Terminology
- HCPCS Level II Coding
- Reimbursement Methodologies and Payment Systems
- Health Records and Data Content Management
- Compliance, Ethics, and Legal Regulations
- Medical Terminology, Anatomy, and Physiology
- Privacy, Confidentiality, and HIPAA Requirements
This comprehensive assessment evaluates competency for medical coding certification, measuring essential
knowledge required for professional coding practice. The exam assesses proficiency in code assignment,
clinical documentation interpretation, reimbursement methodologies, regulatory compliance, and ethical
coding standards. Questions are presented in multiple-choice and scenario-based formats that emphasize
real-world application and critical decision-making skills. Candidates will demonstrate their ability to
abstract data from medical records, apply coding guidelines accurately, navigate complex coding scenarios,
and ensure compliance with federal and payer-specific requirements. This exam prepares coding
professionals for success in diverse healthcare settings including hospitals, physician practices, and
outpatient facilities.
Section One: Questions 1–100
,Question 1
A 45-year-old patient presents with acute appendicitis with perforation and peritonitis. The patient undergoes
an appendectomy. Which ICD-10-CM code sequence is correct?
A. K35.2
B. K35.30
C. K35.80
D. K35.2, K35.30
🟢 A. K35.2
🔴 RATIONALE: Code K35.2 (Acute appendicitis with generalized peritonitis) includes both the perforation
and peritonitis. This is the most specific single code that captures the complete diagnosis. Adding K35.30 would
be redundant and incorrect coding practice.
Question 2
Which CPT modifier indicates a procedure was reduced due to circumstances beyond the physician's control?
A. -52
B. -53
C. -50
D. -59
🟢 A. -52
,🔴 RATIONALE: Modifier -52 (Reduced Services) is used when a service or procedure is partially reduced or
eliminated at the physician's discretion. Modifier -53 is for discontinued procedures due to patient risk, -50 for
bilateral procedures, and -59 for distinct procedural services.
Question 3
A patient receives an influenza vaccination during a routine office visit. Which HCPCS Level II code reports the
vaccine administration?
A. 90658
B. G0008
C. 90471
D. T1007
🟢 B. G0008
🔴 RATIONALE: HCPCS code G0008 reports administration of influenza virus vaccine. Code 90658 is the
vaccine product itself, 90471 is for immunization administration (CPT), and T1007 is a pharmacy service code
not specific to vaccine administration.
Question 4
Under prospective payment systems, hospital inpatient services are reimbursed based on:
A. Fee-for-service charges
B. Diagnosis-Related Groups (DRGs)
C. Relative Value Units (RVUs)
D. Capitation payments
, 🟢 B. Diagnosis-Related Groups (DRGs)
🔴 RATIONALE: DRGs are the basis for Medicare's Inpatient Prospective Payment System (IPPS). Patients are
grouped into DRGs based on diagnoses, procedures, age, and complications, with fixed payment rates assigned
to each group.
Question 5
Which privacy rule requires healthcare providers to implement administrative, physical, and technical
safeguards?
A. HIPAA Privacy Rule
B. HIPAA Security Rule
C. HIPAA Breach Notification Rule
D. HITECH Act
🟢 B. HIPAA Security Rule
🔴 RATIONALE: The HIPAA Security Rule specifically mandates administrative, physical, and technical
safeguards to protect electronic protected health information (ePHI). The Privacy Rule focuses on use and
disclosure of PHI.
Question 6
A coder discovers that a physician consistently overcodes for evaluation and management services. What is the
most appropriate initial action?
(VERIFIED ANSWERS) PLUS RATIONALES 2026 Q&A | INSTANT DOWNLOAD PDF
Core Domains
- Clinical Classification Systems (ICD-10-CM, ICD-10-PCS)
- CPT Coding and Procedural Terminology
- HCPCS Level II Coding
- Reimbursement Methodologies and Payment Systems
- Health Records and Data Content Management
- Compliance, Ethics, and Legal Regulations
- Medical Terminology, Anatomy, and Physiology
- Privacy, Confidentiality, and HIPAA Requirements
This comprehensive assessment evaluates competency for medical coding certification, measuring essential
knowledge required for professional coding practice. The exam assesses proficiency in code assignment,
clinical documentation interpretation, reimbursement methodologies, regulatory compliance, and ethical
coding standards. Questions are presented in multiple-choice and scenario-based formats that emphasize
real-world application and critical decision-making skills. Candidates will demonstrate their ability to
abstract data from medical records, apply coding guidelines accurately, navigate complex coding scenarios,
and ensure compliance with federal and payer-specific requirements. This exam prepares coding
professionals for success in diverse healthcare settings including hospitals, physician practices, and
outpatient facilities.
Section One: Questions 1–100
,Question 1
A 45-year-old patient presents with acute appendicitis with perforation and peritonitis. The patient undergoes
an appendectomy. Which ICD-10-CM code sequence is correct?
A. K35.2
B. K35.30
C. K35.80
D. K35.2, K35.30
🟢 A. K35.2
🔴 RATIONALE: Code K35.2 (Acute appendicitis with generalized peritonitis) includes both the perforation
and peritonitis. This is the most specific single code that captures the complete diagnosis. Adding K35.30 would
be redundant and incorrect coding practice.
Question 2
Which CPT modifier indicates a procedure was reduced due to circumstances beyond the physician's control?
A. -52
B. -53
C. -50
D. -59
🟢 A. -52
,🔴 RATIONALE: Modifier -52 (Reduced Services) is used when a service or procedure is partially reduced or
eliminated at the physician's discretion. Modifier -53 is for discontinued procedures due to patient risk, -50 for
bilateral procedures, and -59 for distinct procedural services.
Question 3
A patient receives an influenza vaccination during a routine office visit. Which HCPCS Level II code reports the
vaccine administration?
A. 90658
B. G0008
C. 90471
D. T1007
🟢 B. G0008
🔴 RATIONALE: HCPCS code G0008 reports administration of influenza virus vaccine. Code 90658 is the
vaccine product itself, 90471 is for immunization administration (CPT), and T1007 is a pharmacy service code
not specific to vaccine administration.
Question 4
Under prospective payment systems, hospital inpatient services are reimbursed based on:
A. Fee-for-service charges
B. Diagnosis-Related Groups (DRGs)
C. Relative Value Units (RVUs)
D. Capitation payments
, 🟢 B. Diagnosis-Related Groups (DRGs)
🔴 RATIONALE: DRGs are the basis for Medicare's Inpatient Prospective Payment System (IPPS). Patients are
grouped into DRGs based on diagnoses, procedures, age, and complications, with fixed payment rates assigned
to each group.
Question 5
Which privacy rule requires healthcare providers to implement administrative, physical, and technical
safeguards?
A. HIPAA Privacy Rule
B. HIPAA Security Rule
C. HIPAA Breach Notification Rule
D. HITECH Act
🟢 B. HIPAA Security Rule
🔴 RATIONALE: The HIPAA Security Rule specifically mandates administrative, physical, and technical
safeguards to protect electronic protected health information (ePHI). The Privacy Rule focuses on use and
disclosure of PHI.
Question 6
A coder discovers that a physician consistently overcodes for evaluation and management services. What is the
most appropriate initial action?
