Mixed Deck — All CDC Topics Flashcards
100 cards from real CDC practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 20 Mixed Deck — All CDC Topics flashcards as text
Which CDT code is used for cone beam CT of one jaw?
Answer: D0364
D0364 represents cone beam CT image — craniofacial data capture, one jaw, in the CDT code set.
Under HIPAA, the standard electronic transaction code set for dental claims is:
Answer: X12 837D
The X12 837D (Dental) transaction set is the HIPAA-mandated standard for electronic dental claim submissions.
A patient reports taking St. John's Wort (hypericum). Which dental drug class may have REDUCED efficacy due to this herbal supplement?
Answer: Benzodiazepines
St. John's Wort induces CYP3A4 and P-glycoprotein, accelerating the metabolism of benzodiazepines and reducing their sedative effect.
Under the ADA Code of Professional Conduct, which principle requires a dentist to act in the patient's best interest even when it may not benefit the dentist financially?
Answer: Beneficence
Beneficence requires dental professionals to promote the patient's welfare above their own financial interests.
A patient presents with trismus, swelling, and a fever of 102°F. The dental consultant should recognize this as:
Answer: A space infection requiring urgent evaluation
Trismus with swelling and fever are hallmarks of a spreading odontogenic space infection, which may require hospitalization.
When a dental coder must report a procedure not adequately described by any existing CDT code for a periodontal service, which code is used?
Answer: D4999
D4999 is the unspecified periodontal procedure code used when no existing CDT code accurately describes the service rendered, and it typically requires a written narrative.
Which coding scenario most clearly represents 'phantom billing'?
Answer: Submitting a claim for a root canal that was never started or completed
Phantom billing is billing for services that were never provided at all, which is outright fraud against the payer.
A claim is rejected as a 'duplicate.' The coder should first:
Answer: Verify whether the original claim was already paid, pending, or denied before taking further action
Before resubmitting a 'duplicate' claim, the coder must check the status of the original claim to avoid overpayment or creating a genuine duplicate.
Which element is NOT typically included in a valid informed consent document for a dental procedure?
Answer: The dentist's personal financial information
Informed consent covers risks, benefits, alternatives, and the right to refuse — the provider's personal finances are irrelevant.
The NADP Code of Professional Conduct primarily governs which group?
Answer: Dental benefit plan professionals
The NADP (National Association of Dental Plans) Code guides ethical conduct for professionals working in the dental benefits industry.
The removal of a soft tissue-impacted tooth is reported with which CDT code?
Answer: D7220
D7220 is the CDT code for removal of an impacted tooth with soft tissue impaction only.
What is a needs assessment in CDC Infection Control & Prevention practice?
Answer: Identifying gaps between current conditions and desired outcomes
A needs assessment identifies gaps between current performance and desired outcomes to justify improvements.
Which antifungal drug used to treat oral candidiasis is known to significantly inhibit CYP3A4 and increase levels of many co-administered drugs?
Answer: Fluconazole
Fluconazole is a potent CYP3A4 inhibitor that can markedly elevate plasma concentrations of drugs like warfarin, benzodiazepines, and statins.
Which of the following best describes the ethical duty of 'nonmaleficence' as applied in dental consulting?
Answer: Avoiding decisions that result in unnecessary harm to patients or providers
Nonmaleficence means 'do no harm' — consultants must avoid decisions that unjustly harm patients, providers, or plan integrity.
A dental practice wants to verify that its sterilizer is functioning properly after a mechanical failure was repaired. Which test should be performed BEFORE returning the sterilizer to routine use?
Answer: Three consecutive biological indicator test cycles with negative results
After sterilizer malfunction or repair, CDC recommends running three consecutive biological indicator cycles without any processed load before returning the sterilizer to service.
A patient undergoes removal of an impacted tooth requiring cutting of bone. Which CDT code range is most appropriate?
Answer: D7000–D7999
Surgical extractions and impacted tooth removals are coded in the D7000–D7999 Oral and Maxillofacial Surgery category.
Which landmark is the 'pterygomandibular raphe' used as a guide for in dentistry?
Answer: Identifying the injection site for inferior alveolar nerve blocks
The pterygomandibular raphe is the key anatomical landmark for locating the needle insertion point when administering an inferior alveolar nerve block.
Which of the following scenarios best represents a 'phase I' treatment priority in a comprehensive dental treatment plan?
Answer: Control of active infection and elimination of disease
Phase I treatment focuses on disease control — managing infections, caries, and periodontal disease before restorative or elective care.
What CDT code describes the localized delivery of antimicrobial agents into periodontal pockets as an adjunct to scaling and root planing?
Answer: D4381
D4381 is the code for localized delivery of antimicrobial agents (such as chlorhexidine chip or doxycycline gel) into periodontal pockets as an adjunct to SRP.
The 'lamina dura' visible on dental radiographs represents:
Answer: The compact bone lining the tooth socket (alveolus)
The lamina dura is the thin layer of dense cortical bone lining the tooth socket, appearing as a white line around the root on radiographs.