NR511 Differential Diagnosis & Primary Care Midterm Exam Study Guide:
(Latest Update) Comprehensive Q&A | Grade A | 100% Correct (Verified
Answers)
Subject: Differential Diagnosis & Primary Care (NR511) – Midterm: Diagnostic Reasoning, Medical
Coding, Dermatology, ENT, Ophthalmology, GI Disorders, Respiratory, Infectious Disease
Source: Midterm Study Guide Blueprint – SOAP Notes, E&M Coding, Sensitivity/Specificity, Rash
Identification, Asthma/COPD, IBD/IBS, Hearing Loss
Format: Q&A Study Guide with Rationale – 100% Verified Answers
Verified: Latest Update | Grade A Guaranteed
1: Define diagnostic reasoning.
Correct Answer: Reflective thinking where the process involves questioning one's thinking to
determine if all possible avenues have been explored and conclusions are based on evidence. Seen as a
kind of critical thinking.
1. Diagnostic reasoning is an analytical process for clinical decision-making.
2. Involves generating differential diagnoses, testing hypotheses, and revising based on new data.
3. Distinguish from pattern recognition (type 1 thinking).
2: What is subjective data?
Correct Answer: Anything the patient tells you or complains of regarding their symptoms – Chief
complaint, HPI, ROS.
1. Subjective data is from the patient's perspective, documented in patient's own words when
possible.
2. Includes history of present illness, past medical history, family history, social history, review of
systems.
3. Cannot be measured or verified by examiner.
3: What is objective data?
Correct Answer: Anything YOU can see, touch, feel, hear, or smell as part of your exam. Includes lab
data, diagnostic test results, etc.
1. Objective data is measurable, observable findings.
2. Physical exam findings, vital signs, laboratory results, imaging studies.
3. Distinguishes from subjective complaints.
, 4: Identify components of HPI (History of Present Illness).
Correct Answer: Specifically related to the chief complaint only – detailed breakdown using
OLDCARTS (Onset, Location, Duration, Characteristics, Aggravating factors, Relieving factors,
Timing, Severity).
1. HPI is a chronological description of the present illness.
2. OLDCARTS is a mnemonic to systematically characterize a symptom.
3. Essential for differential diagnosis generation.
5: Describe the differences between medical billing and medical coding.
Correct Answer: Medical billing: process of submitting and following up on claims made to a payer to
receive payment for medical services rendered. Medical coding: the use of codes to communicate with
payers about which procedures were performed and why.
1. Coding translates healthcare services into standardized codes.
2. Billing submits claims to insurance companies for reimbursement.
3. Accurate coding is essential for proper billing and compliance.
6: Compare and contrast ICD and CPT coding systems.
Correct Answer: ICD (International Classification of Diseases): provides payer info on necessity of
visit/procedure – shorthand for patient's diagnosis. CPT (Common Procedural Terminology): official
procedural coding rules and guidelines for medical services/procedures performed. Must have
corresponding ICD for reimbursement.
1. ICD-10-CM codes describe diagnosis (why).
2. CPT codes describe service/procedure (what).
3. Both required for claim submission.
7: How do specificity, sensitivity, and predictive value contribute to diagnostic test usefulness?
Correct Answer: Specificity: ability to correctly detect a specific condition (true negatives).
Sensitivity: ability to correctly identify a condition when present (true positives). Predictive value:
likelihood patient actually has condition, dependent on prevalence. Diagnostic tests can confirm/rule out
hypotheses, screen, or monitor chronic conditions.
1. SPIN: Specific test, Positive result rules IN disease.
2. SNOUT: Sensitive test, Negative result rules OUT disease.
3. Positive predictive value increases with disease prevalence.
8: Discuss the elements that need to be considered when developing a plan.
Correct Answer: Patient's preferences and actions, research evidence, clinical state/circumstances,
clinical expertise.
1. Patient-centered care incorporates patient values and preferences.
2. Evidence-based practice integrates best evidence with clinical expertise.
3. Plan should be realistic and feasible for patient.
(Latest Update) Comprehensive Q&A | Grade A | 100% Correct (Verified
Answers)
Subject: Differential Diagnosis & Primary Care (NR511) – Midterm: Diagnostic Reasoning, Medical
Coding, Dermatology, ENT, Ophthalmology, GI Disorders, Respiratory, Infectious Disease
Source: Midterm Study Guide Blueprint – SOAP Notes, E&M Coding, Sensitivity/Specificity, Rash
Identification, Asthma/COPD, IBD/IBS, Hearing Loss
Format: Q&A Study Guide with Rationale – 100% Verified Answers
Verified: Latest Update | Grade A Guaranteed
1: Define diagnostic reasoning.
Correct Answer: Reflective thinking where the process involves questioning one's thinking to
determine if all possible avenues have been explored and conclusions are based on evidence. Seen as a
kind of critical thinking.
1. Diagnostic reasoning is an analytical process for clinical decision-making.
2. Involves generating differential diagnoses, testing hypotheses, and revising based on new data.
3. Distinguish from pattern recognition (type 1 thinking).
2: What is subjective data?
Correct Answer: Anything the patient tells you or complains of regarding their symptoms – Chief
complaint, HPI, ROS.
1. Subjective data is from the patient's perspective, documented in patient's own words when
possible.
2. Includes history of present illness, past medical history, family history, social history, review of
systems.
3. Cannot be measured or verified by examiner.
3: What is objective data?
Correct Answer: Anything YOU can see, touch, feel, hear, or smell as part of your exam. Includes lab
data, diagnostic test results, etc.
1. Objective data is measurable, observable findings.
2. Physical exam findings, vital signs, laboratory results, imaging studies.
3. Distinguishes from subjective complaints.
, 4: Identify components of HPI (History of Present Illness).
Correct Answer: Specifically related to the chief complaint only – detailed breakdown using
OLDCARTS (Onset, Location, Duration, Characteristics, Aggravating factors, Relieving factors,
Timing, Severity).
1. HPI is a chronological description of the present illness.
2. OLDCARTS is a mnemonic to systematically characterize a symptom.
3. Essential for differential diagnosis generation.
5: Describe the differences between medical billing and medical coding.
Correct Answer: Medical billing: process of submitting and following up on claims made to a payer to
receive payment for medical services rendered. Medical coding: the use of codes to communicate with
payers about which procedures were performed and why.
1. Coding translates healthcare services into standardized codes.
2. Billing submits claims to insurance companies for reimbursement.
3. Accurate coding is essential for proper billing and compliance.
6: Compare and contrast ICD and CPT coding systems.
Correct Answer: ICD (International Classification of Diseases): provides payer info on necessity of
visit/procedure – shorthand for patient's diagnosis. CPT (Common Procedural Terminology): official
procedural coding rules and guidelines for medical services/procedures performed. Must have
corresponding ICD for reimbursement.
1. ICD-10-CM codes describe diagnosis (why).
2. CPT codes describe service/procedure (what).
3. Both required for claim submission.
7: How do specificity, sensitivity, and predictive value contribute to diagnostic test usefulness?
Correct Answer: Specificity: ability to correctly detect a specific condition (true negatives).
Sensitivity: ability to correctly identify a condition when present (true positives). Predictive value:
likelihood patient actually has condition, dependent on prevalence. Diagnostic tests can confirm/rule out
hypotheses, screen, or monitor chronic conditions.
1. SPIN: Specific test, Positive result rules IN disease.
2. SNOUT: Sensitive test, Negative result rules OUT disease.
3. Positive predictive value increases with disease prevalence.
8: Discuss the elements that need to be considered when developing a plan.
Correct Answer: Patient's preferences and actions, research evidence, clinical state/circumstances,
clinical expertise.
1. Patient-centered care incorporates patient values and preferences.
2. Evidence-based practice integrates best evidence with clinical expertise.
3. Plan should be realistic and feasible for patient.
