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Question 1. Which of the following best defines “anesthesia time” in CPT coding? A) Time from patient entering the operating room to leaving the OR B) Time from the start of induction to the end of emergence C) Time from the first surgical incision to the last suture placement D) Time from the surgeon’s first skin incision to the final dressing Answer: B Explanation: Anesthesia time is measured from the moment anesthesia is initiated (induction) until the patient is fully emerged from anesthesia, regardless of surgical start or end times. Question 2. The base unit (B) assigned to a CPT anesthesia code reflects which of the following? A) The duration of the procedure in minutes B) The complexity of the surgical procedure itself C) The number of anesthesiology staff present D) The patient’s physical status modifier Answer: B Explanation: Base units are predetermined values that represent the technical complexity and risk of the surgical procedure being anesthetized. Question 3. When reporting anesthesia for a combined procedure that involves both a thyroidectomy and a parathyroidectomy, which coding principle applies? A) Use the highest base unit code only B) Add the base units of both procedures together C) Report a single code for the primary procedure and add an add‑on code for the secondary D) Use a “crosswalk” to a generic combined procedure code
Answer: C Explanation: The primary surgical CPT code is reported with its base units, and an appropriate add‑on code is used for the secondary procedure; base units are not summed. Question 4. Which CPT range includes anesthesia codes for procedures performed on the spine? A) 00100– 00352 B) 00400– 00580 C) 00600– 00670 D) 00700– 00952 Answer: C Explanation: The 00600–00670 range is designated for anesthesia services related to spinal and spinal cord procedures. Question 5. A 75‑year‑old patient undergoing total knee replacement receives general anesthesia. Which qualifying circumstance code should be appended? A) 99100 – Age under 1 year B) 99110 – Age 70 or older C) 99120 – Total body hypothermia D) 99130 – Controlled hypotension Answer: B Explanation: Code 99110 is used for patients age 70 or older when the anesthesia service is provided.
Answer: B Explanation: The 00400–00580 range covers anesthesia for thoracic and intrathoracic procedures, including those requiring one‑lung ventilation. Question 9. A patient receives monitored anesthesia care (MAC) for a colonoscopy lasting 45 minutes. How many time units (T) are reported? A) 2 B) 3 C) 4 D) 5 Answer: B Explanation: Time units are calculated at 1 unit per 15 minutes. 45 minutes ÷ 15 = 3 time units. Question 10. Which of the following is considered an add‑on code for anesthesia? A) 01916 – Anesthesia for MRI B) 99140 – Controlled hypotension in patients over 70 C) 01999 – Anesthesia for postoperative pain management D) 00100 – Anesthesia for intracranial procedures Answer: C Explanation: 01999 is an add‑on code used for postoperative pain management services provided after the primary anesthesia. Question 11. When reporting anesthesia for a cesarean delivery with epidural conversion, which base code should be used?
A) 01958
B) 01960
C) 01961
D) 01968
Answer: A Explanation: Code 01958 is the base anesthesia code for cesarean delivery with neuraxial (epidural) anesthesia. Question 12. A patient undergoing laparoscopic cholecystectomy receives general anesthesia lasting 70 minutes. How many time units are billed? A) 4 B) 5 C) 6 D) 7 Answer: B Explanation: 70 minutes ÷ 15 = 4.66, rounded up to the next whole unit = 5 time units. Question 13. Which modifier is used when a CRNA provides anesthesia services under the medical direction of an anesthesiologist? A) AA B) QK C) QX D) QZ Answer: C
A) 0
B) 1
C) 2
D) 3
Answer: C Explanation: Physical status P3 adds 2 modifying units to the total calculation. Question 17. Which code would be used for anesthesia administered during a pediatric cataract extraction in a 6‑month‑old infant? A) 00140 – Anesthesia for intracranial procedures B) 00166 – Anesthesia for ophthalmic procedures, child C) 00170 – Anesthesia for ocular procedures, adult D) 00180 – Anesthesia for facial plastic surgery Answer: B Explanation: Code 00166 is specific for ophthalmic procedures performed on a child. Question 18. In the anesthesia reimbursement formula, what is the conversion factor? A) The sum of base, time, and modifying units B) A dollar amount set annually by Medicare that multiplies the total units C) The number of minutes per time unit D) The physical status modifier value Answer: B Explanation: The conversion factor is a monetary value (e.g., $22.00) applied to the total unit count to determine reimbursement.
Question 19. Which modifier signals that two concurrent procedures were medically directed by the same anesthesiologist? A) AA B) QK C) QX D) QZ Answer: B Explanation: Modifier QK is used when an anesthesiologist provides medical direction for two, three, or four concurrent procedures. Question 20. A patient receives moderate (conscious) sedation for a dental extraction lasting 30 minutes. Which CPT range contains the appropriate code? A) 00100– 00352 B) 00400– 00580 C) 00600– 00670 D) 01990– 01999 Answer: D Explanation: The 01990–01999 range includes codes for moderate sedation and related services. Question 21. Which of the following is true regarding the reporting of anesthesia for a bilateral total hip replacement performed in a single session? A) Report two separate base codes, one for each hip B) Report a single base code with a bilateral add‑on modifier
Question 24. An anesthesiologist performs a nerve block after the primary surgery at the surgeon’s request. How should this be reported? A) As part of the primary anesthesia code B) As a separate CPT code with its own time units C) Not reported because it is included in the primary code D) With modifier AA only Answer: B Explanation: Post‑operative nerve blocks requested by the surgeon are reported separately with their own CPT code and time units. Question 25. Which of the following best describes the “time unit” calculation for anesthesia? A) 1 unit per 5 minutes of anesthesia time B) 1 unit per 10 minutes of anesthesia time C) 1 unit per 15 minutes of anesthesia time D) 1 unit per 30 minutes of anesthesia time Answer: C Explanation: The standard conversion is 1 time unit for every 15 minutes of anesthesia service. Question 26. A patient with a history of myocardial infarction (P3) undergoes a laparoscopic appendectomy. The base units are 4 and the procedure lasts 60 minutes. What is the total unit count before applying the conversion factor? A) 9 B) 10 C) 11
D) 12
Answer: C Explanation: Base units = 4, time units = 60 ÷ 15 = 4, modifying units for P3 = 2. Total = 4 + 4 + 2 = 10. (Correction: Actually 4+4+2=10, so answer B). Answer: B Explanation: Adding base (4) + time (4) + modifying (2) yields 10 total units. Question 27. Which CPT code would you select for anesthesia administered during an MRI of the brain? A) 01916 B) 01920 C) 01930 D) 01940 Answer: A Explanation: Code 01916 is the base anesthesia code for MRI procedures. Question 28. An elderly patient (age 78) undergoes a total hip arthroplasty under spinal anesthesia. Which qualifying circumstance code is appropriate? A) 99100 B) 99110 C) 99120 D) 99130 Answer: B
Answer: C Explanation: 120 minutes ÷ 15 = 8 time units. Question 32. Which of the following is NOT a physical status modifier? A) P B) P C) P D) QK Answer: D Explanation: QK is a provider‑type modifier, not a physical status modifier. Question 33. During a combined procedure of shoulder arthroscopy and open rotator cuff repair, which anesthesia base code should be reported? A) 01400 – Shoulder arthroscopy B) 01420 – Open shoulder surgery C) 01440 – Combined shoulder procedures D) Use the higher‑valued code and add an appropriate add‑on Answer: D Explanation: Report the primary procedure’s base code (the higher‑valued one) and add an add‑on code for the secondary procedure. Question 34. Which CPT range includes anesthesia for obstetric vaginal delivery with epidural analgesia? A) 00100– 00352
B) 00400– 00580
C) 01958– 01969
D) 01112– 01860
Answer: C Explanation: The 01958–01969 range covers obstetric anesthesia services. Question 35. A patient undergoing a diagnostic bronchoscopy receives moderate sedation lasting 20 minutes. How many time units are reported? A) 1 B) 2 C) 3 D) 4 Answer: B Explanation: 20 minutes ÷ 15 = 1.33, rounded up to 2 time units. Question 36. Which code is used for anesthesia during a percutaneous liver biopsy performed under CT guidance? A) 01916 B) 01918 C) 01920 D) 01922 Answer: B Explanation: Code 01918 is for anesthesia during CT‑guided percutaneous procedures.
Answer: B Explanation: Code 01990 covers moderate sedation and analgesia services. Question 40. When reporting anesthesia for a unilateral knee arthroscopy lasting 40 minutes, how many time units are billed? A) 2 B) 3 C) 4 D) 5 Answer: B Explanation: 40 minutes ÷ 15 = 2.66, rounded up to 3 time units. Question 41. Which CPT code would you select for anesthesia during a pediatric cardiac catheterization? A) 01916 B) 01922 C) 01930 D) 01934 Answer: D Explanation: Code 01934 is designated for anesthesia during pediatric cardiac catheterization procedures. Question 42. A patient receives a combined spinal‑epidural (CSE) for a cesarean section. Which base code is appropriate? A) 01958
B) 01960
C) 01961
D) 01968
Answer: B Explanation: Code 01960 is used for combined spinal‑epidural anesthesia for cesarean delivery. Question 43. Which modifier indicates that the anesthesiologist performed the service personally and also provided medical direction to a CRNA? A) AA B) QK C) QX D) QZ Answer: A Explanation: Modifier AA denotes personal performance by the anesthesiologist; medical direction to a CRNA would be indicated by QX on the CRNA claim, not on the anesthesiologist’s claim. Question 44. For anesthesia services rendered during a hysterectomy that lasted 95 minutes, how many time units are reported? A) 5 B) 6 C) 7 D) 8 Answer: C
Question 47. Which CPT range includes anesthesia codes for procedures performed on the hand and wrist? A) 00100– 00352 B) 00400– 00580 C) 01112– 01860 D) 01958– 01969 Answer: C Explanation: The 01112–01860 range covers anesthesia for extremity procedures, including hand and wrist surgeries. Question 48. A patient with severe asthma (P3) undergoes an upper endoscopy with MAC lasting 30 minutes. How many modifying units are added? A) 0 B) 1 C) 2 D) 3 Answer: C Explanation: Physical status P3 adds 2 modifying units. Question 49. Which code is used for anesthesia during a diagnostic colonoscopy performed under moderate sedation? A) 01990 B) 01992 C) 01994 D) 01996
Answer: B Explanation: Code 01992 specifically addresses moderate sedation for colonoscopy. Question 50. For a patient undergoing a total abdominal hysterectomy with bilateral salpingo‑oophorectomy, which base code is appropriate? A) 00740 B) 00750 C) 00760 D) 00770 Answer: B Explanation: Code 00750 represents anesthesia for total abdominal hysterectomy with removal of both ovaries and fallopian tubes. Question 51. Which qualifier code is used for controlled hypotension in patients under 70 years of age? A) 99130 B) 99140 C) 99120 D) 99110 Answer: A Explanation: Code 99130 denotes controlled hypotension as a qualifying circumstance. Question 52. A patient receives spinal anesthesia for a total knee arthroplasty lasting 85 minutes. How many time units are reported?
