NR511 | NR511 Differential Diagnosis & Primary
Care Midterm v1 | Questions with Correct Answers
and Expert Explanation for Each Question |
Chamberlain
1. Which of the following describes the ability of a clinical test to correctly identify those
individuals who actually have a specific disease?
A. Sensitivity
B. Specificity
C. Positive Predictive Value
D. Incidence
Correct Answer: A
Expert Explanation: Sensitivity is defined as the proportion of people with a disease who
test positive. It measures the ability of a test to detect the condition when it is truly present.
High sensitivity is crucial for screening tests to ensure few cases are missed (SNOUT).
2. In a SOAP note, where should the provider document the physical examination findings?
A. Subjective
B. Assessment
C. Objective
D. Plan
Correct Answer: C
Expert Explanation: The Objective section of the SOAP note includes measurable or
observable data such as vital signs and physical exam findings. This section contrast with
the Subjective section, which contains information reported by the patient. Accurate
documentation here is essential for supporting the medical necessity of the diagnosis.
3. A patient presents with bilateral itchy, watery eyes and clear discharge. Which diagnosis is
most likely?
A. Bacterial conjunctivitis
B. Viral conjunctivitis
C. Blepharitis
D. Allergic conjunctivitis
Correct Answer: D
,Expert Explanation: Allergic conjunctivitis is typically characterized by bilateral
involvement and significant pruritus (itching). The discharge is usually clear or stringy
rather than purulent. This condition is often associated with other atopic symptoms like
sneezing or a runny nose.
4. Which ICD-10 coding principle is most important for ensuring proper reimbursement in
primary care?
A. Coding to the highest level of specificity
B. Coding for conditions that are ‘rule out’ only
C. Using the most non-specific code available
D. Only coding the primary complaint
Correct Answer: A
Expert Explanation: ICD-10 codes require high specificity to accurately reflect the
patient’s condition and the complexity of the visit. Using unspecified codes can lead to
claim denials or lower reimbursement rates. Providers should use all available clinical
information to select the most precise code possible.
5. A 45-year-old male presents with sudden onset of severe ear pain, tragal tenderness, and a
swollen ear canal. What is the most likely diagnosis?
A. Otitis Externa
B. Acute Otitis Media
C. Otitis Media with Effusion
D. Mastoiditis
Correct Answer: A
Expert Explanation: Otitis Externa, often called swimmer’s ear, involves inflammation of
the external auditory canal. The hallmark sign is pain when the tragus is manipulated or
the pinna is pulled. It is usually treated with topical antibiotic drops rather than systemic
medications.
6. According to the IDSA guidelines, which symptom duration is a primary criterion for
diagnosing acute bacterial rhinosinusitis?
A. Symptoms lasting more than 3 days
B. Symptoms lasting more than 10 days without improvement
C. Symptoms that resolve within 5 days
D. Symptoms that occur only at night
Correct Answer: B
, Expert Explanation: Acute bacterial rhinosinusitis is often differentiated from viral
infections by its duration. Guidelines suggest that symptoms persisting for 10 or more days
without clinical improvement are likely bacterial. This helps prevent the over-prescription
of antibiotics for self-limiting viral upper respiratory infections.
7. Using the Centor criteria, which of the following increases the likelihood of a Group A
Streptococcus infection?
A. Presence of tonsillar exudate
B. Cough and rhinorrhea
C. Afebrile status
D. Age over 45 years
Correct Answer: A
Expert Explanation: The Centor criteria help clinicians evaluate the probability of
bacterial pharyngitis. Points are awarded for tonsillar exudate, tender anterior cervical
lymphadenopathy, fever, and the absence of a cough. A higher score indicates a greater
need for rapid antigen testing or throat culture.
8. What is the first-line treatment for a patient diagnosed with mild Tinea Corporis?
A. Topical antifungal cream (e.g., Terbinafine)
B. Oral Fluconazole
C. Topical Corticosteroids
D. Oral Griseofulvin
Correct Answer: A
Expert Explanation: Tinea Corporis, or ringworm, is a fungal infection of the skin that
typically responds well to topical therapy. Topical antifungals should be applied to the
lesion and the surrounding skin for 1 to 2 weeks. Oral medications are generally reserved
for extensive infections or cases involving hair follicles.
9. Which component of the E/M code selection is based on the complexity of the clinical
decision making?
A. Past Medical History
B. Social History
C. Review of Systems
D. MDM (Medical Decision Making)
Correct Answer: D
Care Midterm v1 | Questions with Correct Answers
and Expert Explanation for Each Question |
Chamberlain
1. Which of the following describes the ability of a clinical test to correctly identify those
individuals who actually have a specific disease?
A. Sensitivity
B. Specificity
C. Positive Predictive Value
D. Incidence
Correct Answer: A
Expert Explanation: Sensitivity is defined as the proportion of people with a disease who
test positive. It measures the ability of a test to detect the condition when it is truly present.
High sensitivity is crucial for screening tests to ensure few cases are missed (SNOUT).
2. In a SOAP note, where should the provider document the physical examination findings?
A. Subjective
B. Assessment
C. Objective
D. Plan
Correct Answer: C
Expert Explanation: The Objective section of the SOAP note includes measurable or
observable data such as vital signs and physical exam findings. This section contrast with
the Subjective section, which contains information reported by the patient. Accurate
documentation here is essential for supporting the medical necessity of the diagnosis.
3. A patient presents with bilateral itchy, watery eyes and clear discharge. Which diagnosis is
most likely?
A. Bacterial conjunctivitis
B. Viral conjunctivitis
C. Blepharitis
D. Allergic conjunctivitis
Correct Answer: D
,Expert Explanation: Allergic conjunctivitis is typically characterized by bilateral
involvement and significant pruritus (itching). The discharge is usually clear or stringy
rather than purulent. This condition is often associated with other atopic symptoms like
sneezing or a runny nose.
4. Which ICD-10 coding principle is most important for ensuring proper reimbursement in
primary care?
A. Coding to the highest level of specificity
B. Coding for conditions that are ‘rule out’ only
C. Using the most non-specific code available
D. Only coding the primary complaint
Correct Answer: A
Expert Explanation: ICD-10 codes require high specificity to accurately reflect the
patient’s condition and the complexity of the visit. Using unspecified codes can lead to
claim denials or lower reimbursement rates. Providers should use all available clinical
information to select the most precise code possible.
5. A 45-year-old male presents with sudden onset of severe ear pain, tragal tenderness, and a
swollen ear canal. What is the most likely diagnosis?
A. Otitis Externa
B. Acute Otitis Media
C. Otitis Media with Effusion
D. Mastoiditis
Correct Answer: A
Expert Explanation: Otitis Externa, often called swimmer’s ear, involves inflammation of
the external auditory canal. The hallmark sign is pain when the tragus is manipulated or
the pinna is pulled. It is usually treated with topical antibiotic drops rather than systemic
medications.
6. According to the IDSA guidelines, which symptom duration is a primary criterion for
diagnosing acute bacterial rhinosinusitis?
A. Symptoms lasting more than 3 days
B. Symptoms lasting more than 10 days without improvement
C. Symptoms that resolve within 5 days
D. Symptoms that occur only at night
Correct Answer: B
, Expert Explanation: Acute bacterial rhinosinusitis is often differentiated from viral
infections by its duration. Guidelines suggest that symptoms persisting for 10 or more days
without clinical improvement are likely bacterial. This helps prevent the over-prescription
of antibiotics for self-limiting viral upper respiratory infections.
7. Using the Centor criteria, which of the following increases the likelihood of a Group A
Streptococcus infection?
A. Presence of tonsillar exudate
B. Cough and rhinorrhea
C. Afebrile status
D. Age over 45 years
Correct Answer: A
Expert Explanation: The Centor criteria help clinicians evaluate the probability of
bacterial pharyngitis. Points are awarded for tonsillar exudate, tender anterior cervical
lymphadenopathy, fever, and the absence of a cough. A higher score indicates a greater
need for rapid antigen testing or throat culture.
8. What is the first-line treatment for a patient diagnosed with mild Tinea Corporis?
A. Topical antifungal cream (e.g., Terbinafine)
B. Oral Fluconazole
C. Topical Corticosteroids
D. Oral Griseofulvin
Correct Answer: A
Expert Explanation: Tinea Corporis, or ringworm, is a fungal infection of the skin that
typically responds well to topical therapy. Topical antifungals should be applied to the
lesion and the surrounding skin for 1 to 2 weeks. Oral medications are generally reserved
for extensive infections or cases involving hair follicles.
9. Which component of the E/M code selection is based on the complexity of the clinical
decision making?
A. Past Medical History
B. Social History
C. Review of Systems
D. MDM (Medical Decision Making)
Correct Answer: D
