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Here are the 250 multiple choice questions and answers with explanations on NWCA Diagnostic Coding Basics Exam: 1. What is the primary purpose of the ICD- 10 - CM system? A) To assign procedure codes B) To assign diagnosis codes C) To track patient demographics D) To document medical procedures Answer: B) To assign diagnosis codes Explanation: The ICD- 10 - CM system is primarily used to assign diagnosis codes for billing and statistical purposes. 2. Which of the following codes is used to indicate a patient's primary diagnosis? A) V B) V C) V D) Z Answer: A) V Explanation: The V10 code range is used to indicate a patient's primary diagnosis.
3. What is the difference between a principal diagnosis and a secondary diagnosis? A) Principal diagnosis is the most severe condition, while secondary diagnosis is less severe B) Principal diagnosis is the reason for admission, while secondary diagnosis is a related condition C) Principal diagnosis is the first condition diagnosed, while secondary diagnosis is a subsequent condition D) Principal diagnosis is the most common condition, while secondary diagnosis is a less common condition Answer: B) Principal diagnosis is the reason for admission, while secondary diagnosis is a related condition Explanation: The principal diagnosis is the reason for admission, while secondary diagnoses are related conditions. 4. Which of the following codes is used to indicate a patient's reason for encounter? A) Z B) Z C) Z D) V Answer: A) Z Explanation: The Z00 code range is used to indicate a patient's reason for encounter. 5. What is the purpose of the external cause codes? A) To track patient demographics
Answer: A) Sequela code is a complication of a condition, while complication code is a subsequent condition Explanation: A sequela code is used to indicate a complication of a condition, while a complication code is used to indicate a subsequent condition. 8. Which of the following codes is used to indicate a patient's sequela of a condition? A) V B) V C) V D) S Answer: D) S Explanation: The S00 code range is used to indicate a patient's sequela of a condition. 9. What is the purpose of the procedure codes? A) To track patient demographics B) To assign diagnosis codes C) To document medical procedures D) To track external causes of injury or disease Answer: C) To document medical procedures Explanation: The procedure codes are used to document medical procedures.
10. Which of the following codes is used to indicate a patient's surgical procedure? A) 0S B) 1S C) 2S D) 3S Answer: B) 1S Explanation: The 1S0 code range is used to indicate a patient's surgical procedure. 11. What is the difference between a primary procedure and a secondary procedure? A) Primary procedure is the most complex procedure, while secondary procedure is less complex B) Primary procedure is the first procedure performed, while secondary procedure is a subsequent procedure C) Primary procedure is the reason for admission, while secondary procedure is a related procedure D) Primary procedure is the most common procedure, while secondary procedure is a less common procedure Answer: B) Primary procedure is the first procedure performed, while secondary procedure is a subsequent procedure Explanation: The primary procedure is the first procedure performed, while secondary procedures are subsequent procedures. 12. Which of the following codes is used to indicate a patient's secondary procedure?
D) W
Answer: D) W Explanation: The W00 code range is used to indicate a patient's external cause of injury in the procedure section. 15. What is the difference between a sequela code and a complication code in the procedure section? A) Sequela code is a complication of a condition, while complication code is a subsequent condition B) Sequela code is a subsequent condition, while complication code is a complication of a condition C) Sequela code is a less severe condition, while complication code is a more severe condition D) Sequela code is a more severe condition, while complication code is a less severe condition Answer: A) Sequela code is a complication of a condition, while complication code is a subsequent condition Explanation: A sequela code is used to indicate a complication of a condition in the procedure section, while a complication code is used to indicate a subsequent condition. 16. Which of the following codes is used to indicate a patient's sequela of a condition in the procedure section? A) V B) V C) V D) S
Answer: D) S Explanation: The S00 code range is used to indicate a patient's sequela of a condition in the procedure section. 17. What is the purpose of the sequela codes in the procedure section? A) To track patient demographics B) To assign diagnosis codes C) To document medical procedures D) To track external causes of injury or disease Answer: C) To document medical procedures Explanation: The sequela codes in the procedure section are used to document medical procedures. 18. Which of the following codes is used to indicate a patient's surgical procedure with a sequela? A) 0S B) 1S C) 2S D) S Answer: D) S Explanation: The S00 code range is used to indicate a patient's surgical procedure with a sequela.
21. What is the purpose of the external cause codes in the procedure section? A) To track patient demographics B) To assign diagnosis codes C) To document medical procedures D) To track external causes of injury or disease Answer: D) To track external causes of injury or disease Explanation: The external cause codes in the procedure section are used to track the external causes of injury or disease. 22. Which of the following codes is used to indicate a patient's external cause of injury in the procedure section? A) V B) V C) V D) W Answer: D) W Explanation: The W00 code range is used to indicate a patient's external cause of injury in the procedure section. 23. What is the difference between a sequela code and a complication code in the procedure section? A) Sequela code is a complication of a condition, while complication code is a subsequent condition
B) Sequela code is a subsequent condition, while complication code is a complication of a condition C) Sequela code is a less severe condition, while complication code is a more severe condition D) Sequela code is a more severe condition, while complication code is a less severe condition Answer: A) Sequela code is a complication of a condition, while complication code is a subsequent condition Explanation: A sequela code is used to indicate a complication of a condition in the procedure section, while a complication code is used to indicate a subsequent condition. 24. Which of the following codes is used to indicate a patient's sequela of a condition in the procedure section? A) V B) V C) V D) S Answer: D) S Explanation: The S00 code range is used to indicate a patient's sequela of a condition in the procedure section. 25. What is the purpose of the sequela codes in the procedure section? A) To track patient demographics B) To assign diagnosis codes C) To document medical procedures
Answer: B) Primary procedure is the first procedure performed, while secondary procedure is a subsequent procedure Explanation: The primary procedure in the procedure section is the first procedure performed, while secondary procedures are subsequent procedures. 28. Which of the following codes is used to indicate a patient's secondary procedure in the procedure section? A) 0S B) 1S C) 2S D) 3S Answer: C) 2S Explanation: The 2S0 code range is used to indicate a patient's secondary procedure in the procedure section. 29. What is the purpose of the external cause codes in the procedure section? A) To track patient demographics B) To assign diagnosis codes C) To document medical procedures D) To track external causes of injury or disease Answer: D) To track external causes of injury or disease Explanation: The external cause codes in the procedure section are used to track the external causes of injury or disease.
30. Which of the following codes is used to indicate a patient's external cause of injury in the procedure section? A) V B) V C) V D) W Answer: D) W Explanation: The W00 code range is used to indicate a patient's external cause of injury in the procedure section. 31. What is the difference between a sequela code and a complication code in the procedure section? A) Sequela code is a complication of a condition, while complication code is a subsequent condition B) Sequela code is a subsequent condition, while complication code is a complication of a condition C) Sequela code is a less severe condition, while complication code is a more severe condition D) Sequela code is a more severe condition, while complication code is a less severe condition Answer: A) Sequela code is a complication of a condition, while complication code is a subsequent condition Explanation: A sequela code is used to indicate a complication of a condition in the procedure section, while a complication code is used to indicate a subsequent condition.
C) 2S
D) S
Answer: D) S Explanation: The S00 code range is used to indicate a patient's surgical procedure with a sequela. 35. What is the difference between a primary procedure and a secondary procedure in the procedure section? A) Primary procedure is the most complex procedure, while secondary procedure is less complex B) Primary procedure is the first procedure performed, while secondary procedure is a subsequent procedure C) Primary procedure is the reason for admission, while secondary procedure is a related procedure D) Primary procedure is the most common procedure, while secondary procedure is a less common procedure Answer: B) Primary procedure is the first procedure performed, while secondary procedure is a subsequent procedure Explanation: The primary procedure in the procedure section is the first procedure performed, while secondary procedures are subsequent procedures. 36. Which of the following codes is used to indicate a patient's secondary procedure in the procedure section? A) 0S B) 1S C) 2S
D) 3S
Answer: C) 2S Explanation: The 2S0 code range is used to indicate a patient's secondary procedure in the procedure section. 37. What is the purpose of the external cause codes in the procedure section? A) To track patient demographics B) To assign diagnosis codes C) To document medical procedures D) To track external causes of injury or disease Answer: D) To track external causes of injury or disease Explanation: The external cause codes in the procedure section are used to track the external causes of injury or disease. 38. Which of the following codes is used to indicate a patient's external cause of injury in the procedure section? A) V B) V C) V D) W Answer: D) W
41. What is the purpose of the sequela codes in the procedure section? A) To track patient demographics B) To assign diagnosis codes C) To document medical procedures D) To track external causes of injury or disease Answer: C) To document medical procedures Explanation: The sequela codes in the procedure section are used to document medical procedures. 42. Which of the following codes is used to indicate a patient's surgical procedure with a sequela? A) 0S B) 1S C) 2S D) S Answer: D) S Explanation: The S00 code range is used to indicate a patient's surgical procedure with a sequela. 43. What is the difference between a primary procedure and a secondary procedure in the procedure section? A) Primary procedure is the most complex procedure, while secondary procedure is less complex
B) Primary procedure is the first procedure performed, while secondary procedure is a subsequent procedure C) Primary procedure is the reason for admission, while secondary procedure is a related procedure D) Primary procedure is the most common procedure, while secondary procedure is a less common procedure Answer: B) Primary procedure is the first procedure performed, while secondary procedure is a subsequent procedure Explanation: The primary procedure in the procedure section is the first procedure performed, while secondary procedures are subsequent procedures. 44. Which of the following codes is used to indicate a patient's secondary procedure in the procedure section? A) 0S B) 1S C) 2S D) 3S Answer: C) 2S Explanation: The 2S0 code range is used to indicate a patient's secondary procedure in the procedure section. 45. What is the purpose of the external cause codes in the procedure section? A) To track patient demographics B) To assign diagnosis codes
