Five questions, pulled in the same style as our real CPC exam bank — with the rationale on every one. No card. No catch. No drip-feed before you can see an answer. Just a genuine taste of how SmartMBX prepares you to pass the AAPC exam.
These are original, written in-house in the AAPC CPC style — not copied from the real exam. Read the scenario, pick your answer, then hit Reveal answer to see the correct choice and why. This is exactly how every item in the paid bank works.
For established-patient office visits coded on time, 35 minutes of total time on the date of the encounter falls in the 30–39 minute band, which is 99214. 99213 tops out at 29 minutes and 99215 begins at 40, so neither fits.
The same procedure performed on mirror-image (left and right) anatomy is a bilateral service, reported with modifier 50 (some payers instead want RT and LT). Modifier 51 is for different multiple procedures, 59 unbundles distinct services, and 76 is a repeat of the same procedure on the same side — none describe doing one procedure on both sides.
The diabetes–CKD relationship is assumed, so you report the combination code E11.22; an instructional note under that code says to use an additional code to identify the stage of CKD, here N18.30 for stage 3. E11.22 does not specify the stage on its own, and because there is a stated complication, E11.9 ("without complications") is wrong.
"-ectomy" means surgical removal, so colectomy is excision of the colon (here "partial" = part of it). "Anastomosis" is a surgical connection between two structures — the remaining colon ends are rejoined. Incision/biopsy would be "-otomy," a new skin opening is a colostomy ("-ostomy"), and scope examination is colonoscopy ("-oscopy").
GA reports that a required ABN (waiver of liability) is on file for a service likely to be denied as not reasonable/necessary. GZ is the same expected-denial situation but with no ABN obtained; GX is for a voluntary ABN on a statutorily excluded service; and GY flags a service that is statutorily excluded from Medicare entirely. Only GA matches "ABN signed and on file."
Some apps flash a big "95% exam-ready" number after ten questions. That feels great and means nothing. SmartMBX does it the honest way — because a number you can trust is the whole point of practicing.
Your readiness is weighted by the actual CPC blueprint — the domains and their proportions — not a flat percentage of whatever you happened to answer. Strength in one area can’t paper over a gap in another.
Until you’ve answered enough across enough domains, the score stays at calibrating instead of inventing confidence. We’d rather show you nothing than show you a comforting lie.
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