Want to test your diagnostics knowledge before the CPC exam? Below are free sample flashcards from the 50-card diagnostics section of our 1041-card CPC (Certified Professional Coder) deck, which covers BUN, Basic Metabolic Panel, Urea Nitrogen and more.
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Patient receives an abdominal CT. Contrast is administered orally and rectally. How is this coded regarding the with contrast CPT designation?
Show answer →Per CPT Radiology Guidelines, with contrast requires intravascular (IV), intra-articular, or intrathecal administration. Oral and/or rectal contrast administration does NOT qualify a study as with contrast for CPT coding purposes. This encounter would be coded as without contrast. AAPC Exam Tip: Watch for oral contrast as a distractor intended to make you choose a with contrast code incorrectly. Always look for IV or injection documentation.
A provider orders a Basic Metabolic Panel (80048). Lab results include: Calcium (total), Carbon dioxide, Chloride, Creatinine, Glucose, Potassium, Sodium, and Urea Nitrogen (BUN). Does this meet the CPT requirements for 80048?
Show answer →Yes. CPT 80048 requires these specific 8 components. If any were missing, the panel could not be coded; individual tests would be reported instead. Note: 80047 is the BMP with Calcium (ionized). AAPC Tip: Always verify the specific type of Calcium (total vs. ionized) to choose between 80047 and 80048.
A lab performs a drug screen using an automated chemistry analyzer to identify potential drug presence. Results are reported as positive or negative. Which category of drug testing does this fall under, and what determines the CPT code selection?
Show answer →This is **Presumptive Drug Testing**. Codes (80305-80307) are selected based on the **methodology** used, not the number of drug classes tested. - 80305: Optical observation (e.g., dipstick). - 80306: Instrument-assisted direct optical observation. - 80307: Instrumented chemistry analyzers (e.g., Immunoassay, TLC). **Exam Tip:** AAPC emphasizes that presumptive codes are reported **once per date of service**, regardless of how many drug classes are screened.
A 55-year-old patient presents for a follow-up of a known mitral valve prolapse. The cardiologist performs a transthoracic echocardiogram to specifically evaluate the mitral valve and left atrium only. Which CPT code category is most appropriate?
Show answer →Code 93308 (Follow-up or limited). A complete TTE (93306 or 93307) requires evaluation of all structures: RV, LV, RA, LA, valves, and pericardium. If only specific structures are visualized for follow-up or a focused clinical question, use 93308. CPC Tip: AAPC often tests the complete vs limited documentation requirement. Documentation must list all required elements to bill a complete study.
A new patient receives a comprehensive eye exam including history, general medical observation, ophthalmoscopy, and initiation of a diagnostic and treatment program for cataracts. Which CPT code is most appropriate?
Show answer →92004. Comprehensive ophthalmological services (92004 for new patients, 92014 for established) describe a general evaluation of the complete visual system. A key differentiator for Comprehensive is the initiation of diagnostic and treatment programs, which may include prescription of medication, lenses, or arranging for surgery. AAPC Tip: If the provider only performs a partial exam or does not initiate a treatment program, Intermediate codes (92002/92012) may be more appropriate. General eye codes are often preferred over E/M codes (99202-99215) unless the focus is on a systemic medical issue rather than a primary ocular condition.
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Try 30 free CPC cards firstThe full CPC deck contains 1041 flashcards, and 50 of them focus on diagnostics. This page shows 5 free samples.
Our CPC deck dedicates 50 of 1041 cards (5%) to diagnostics — always cross-check the official AAPC exam outline for the current blueprint weighting.
Yes — the samples on this page are free, and the CPC preview page has 30 more free cards. Full access to all 1041 cards is a one-time $7.
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