ACDIS CCDS-O Certification Exam:
The Definitive -Question Practice Test
with Detailed Rationales and Clinical
Documentation Best Practices
Questions 1-60: Core Concepts and Foundations
1. What is the primary purpose of Clinical Documentation
Improvement (CDI) in the outpatient setting?
A. To simplify the physician's workflow
B. To ensure accurate and complete documentation that reflects patient severity and
care provided
C. To reduce coding workload
D. To increase hospital reimbursement
Answer: B
Rationale: The foundational aim of outpatient CDI is documentation integrity—ensuring
the medical record clearly tells the clinical story, supports medical necessity, and enables
accurate code assignment. While reimbursement can be affected, it is an outcome, not
the purpose. Accurate documentation improves quality reporting, risk adjustment
accuracy, continuity of care, and compliance .
2. Which risk adjustment model uses current year diagnoses to
predict current year spending?
,A. CMS-HCC
B. HHS-HCC
C. MIPS
D. APMs
Answer: B
Rationale: The HHS-HCC model (used for ACA Marketplace risk adjustment) is a
concurrent model—it uses the enrollee's demographics and diagnoses from the same
benefit year to reflect morbidity. In contrast, the CMS-HCC model is prospective:
conditions documented in the prior year predict expected costs for the following
payment year .
3. Under the CMS-HCC model, a patient's Risk Adjustment Factor
(RAF) score is primarily calculated from:
A. Health status and previous risk score
B. Cost of care provided and hospital readmissions
C. Income status and disability status
D. Enrollment eligibility status and reported conditions
Answer: D
Rationale: The RAF is calculated from demographic/enrollment eligibility factors and
diagnosis codes that map to HCCs. Eligibility status differentiates beneficiaries by aged
versus disabled status. The second major driver is the set of valid ICD-10-CM codes
reported during the data collection period .
4. Which of the following is a key requirement for a compliant
physician query?
,A. Be open-ended without context
B. Lead the provider to a specific diagnosis
C. Be verbal only
D. Be non-leading and include clinical indicators
Answer: D
Rationale: A compliant query must be neutral (non-leading) and include clinical support
such as vitals, labs, imaging, medications, or documented symptoms. It should present
the ambiguity, reference supporting facts, and offer clinically reasonable Answer choices
including "other" and "unable to determine" when appropriate .
5. Which of the following best describes the major difference
between MIPS and APMs?
A. APM participation is required; MIPS participation is voluntary
B. MIPS participation is required (non-participation results in penalty); APM participation
is voluntary
C. Both MIPS and APM participation are voluntary
D. Both MIPS and APM participation are required
Answer: B
Rationale: MIPS (Merit-based Incentive Payment System) is the default Medicare
Quality Payment Program pathway for most eligible clinicians. If a clinician does not
meet reporting requirements, Medicare applies a negative payment adjustment. APMs
(Alternative Payment Models), especially Advanced APMs, are model-based
arrangements that clinicians typically enter through organizational participation
decisions .
, 6. In outpatient coding, when the provider documents "possible
bronchitis" and treats the patient for pneumonia symptoms, what
is the BEST course of action?
A. Assign the "possible bronchitis" code as documented
B. Query the provider to clarify the definitive diagnosis
C. Assign pneumonia based on clinical indicators
D. Code both possible bronchitis and pneumonia
Answer: B
Rationale: In outpatient CDI practice, the appropriate action is to query the provider to
clarify the definitive diagnosis when objective findings and management suggest a more
specific condition than what is stated. CDI should not independently assign diagnoses or
add conditions to the claim without provider validation .
7. A patient with a history of metastatic melanoma, hypertension,
morbid obesity, and bipolar disorder is seen for follow-up. Which
condition has the highest risk-adjusted impact?
A. Body mass index
B. Specificity of bipolar disorder
C. Status of metastatic melanoma
D. Sequelae related to fracture femur
Answer: C
Rationale: The largest RAF impact comes from ensuring accurate capture of high-
weight HCC-relevant chronic conditions—especially active malignancies with metastasis.
HCC models distinguish active metastatic cancer from history-only status. Clarifying
current status (active/under treatment, remission, history) materially affects whether the
condition qualifies for risk adjustment .
The Definitive -Question Practice Test
with Detailed Rationales and Clinical
Documentation Best Practices
Questions 1-60: Core Concepts and Foundations
1. What is the primary purpose of Clinical Documentation
Improvement (CDI) in the outpatient setting?
A. To simplify the physician's workflow
B. To ensure accurate and complete documentation that reflects patient severity and
care provided
C. To reduce coding workload
D. To increase hospital reimbursement
Answer: B
Rationale: The foundational aim of outpatient CDI is documentation integrity—ensuring
the medical record clearly tells the clinical story, supports medical necessity, and enables
accurate code assignment. While reimbursement can be affected, it is an outcome, not
the purpose. Accurate documentation improves quality reporting, risk adjustment
accuracy, continuity of care, and compliance .
2. Which risk adjustment model uses current year diagnoses to
predict current year spending?
,A. CMS-HCC
B. HHS-HCC
C. MIPS
D. APMs
Answer: B
Rationale: The HHS-HCC model (used for ACA Marketplace risk adjustment) is a
concurrent model—it uses the enrollee's demographics and diagnoses from the same
benefit year to reflect morbidity. In contrast, the CMS-HCC model is prospective:
conditions documented in the prior year predict expected costs for the following
payment year .
3. Under the CMS-HCC model, a patient's Risk Adjustment Factor
(RAF) score is primarily calculated from:
A. Health status and previous risk score
B. Cost of care provided and hospital readmissions
C. Income status and disability status
D. Enrollment eligibility status and reported conditions
Answer: D
Rationale: The RAF is calculated from demographic/enrollment eligibility factors and
diagnosis codes that map to HCCs. Eligibility status differentiates beneficiaries by aged
versus disabled status. The second major driver is the set of valid ICD-10-CM codes
reported during the data collection period .
4. Which of the following is a key requirement for a compliant
physician query?
,A. Be open-ended without context
B. Lead the provider to a specific diagnosis
C. Be verbal only
D. Be non-leading and include clinical indicators
Answer: D
Rationale: A compliant query must be neutral (non-leading) and include clinical support
such as vitals, labs, imaging, medications, or documented symptoms. It should present
the ambiguity, reference supporting facts, and offer clinically reasonable Answer choices
including "other" and "unable to determine" when appropriate .
5. Which of the following best describes the major difference
between MIPS and APMs?
A. APM participation is required; MIPS participation is voluntary
B. MIPS participation is required (non-participation results in penalty); APM participation
is voluntary
C. Both MIPS and APM participation are voluntary
D. Both MIPS and APM participation are required
Answer: B
Rationale: MIPS (Merit-based Incentive Payment System) is the default Medicare
Quality Payment Program pathway for most eligible clinicians. If a clinician does not
meet reporting requirements, Medicare applies a negative payment adjustment. APMs
(Alternative Payment Models), especially Advanced APMs, are model-based
arrangements that clinicians typically enter through organizational participation
decisions .
, 6. In outpatient coding, when the provider documents "possible
bronchitis" and treats the patient for pneumonia symptoms, what
is the BEST course of action?
A. Assign the "possible bronchitis" code as documented
B. Query the provider to clarify the definitive diagnosis
C. Assign pneumonia based on clinical indicators
D. Code both possible bronchitis and pneumonia
Answer: B
Rationale: In outpatient CDI practice, the appropriate action is to query the provider to
clarify the definitive diagnosis when objective findings and management suggest a more
specific condition than what is stated. CDI should not independently assign diagnoses or
add conditions to the claim without provider validation .
7. A patient with a history of metastatic melanoma, hypertension,
morbid obesity, and bipolar disorder is seen for follow-up. Which
condition has the highest risk-adjusted impact?
A. Body mass index
B. Specificity of bipolar disorder
C. Status of metastatic melanoma
D. Sequelae related to fracture femur
Answer: C
Rationale: The largest RAF impact comes from ensuring accurate capture of high-
weight HCC-relevant chronic conditions—especially active malignancies with metastasis.
HCC models distinguish active metastatic cancer from history-only status. Clarifying
current status (active/under treatment, remission, history) materially affects whether the
condition qualifies for risk adjustment .
