AHIC Healthcare Terminologies and Vocabulary Standards 2 — Questions and Answers
Question 1: Which clinical vocabulary standard uses a description logic–based formalism and is considered the most semantically rich for representing clinical concepts?
- ICD-10-CM
- LOINC
- SNOMED CT (Correct answer)
- CPT-4
Correct answer: SNOMED CT
SNOMED CT uses description logic (EL++) to define concepts and their relationships, giving it the richest semantic expressivity among standard clinical terminologies.
Question 2: National Drug Codes (NDC) are used primarily for which purpose in healthcare information systems?
- Identifying specific packaged drug products for dispensing and inventory (Correct answer)
- Encoding drug allergy alerts in clinical decision support
- Classifying drugs by pharmacological category in formularies
- Billing Medicare Part B for outpatient drug administration
Correct answer: Identifying specific packaged drug products for dispensing and inventory
NDC codes identify specific drug products by labeler, product, and package size, making them essential for pharmacy dispensing systems and inventory management.
Question 3: HCPCS Level II codes extend CPT codes to cover which additional billing scenarios?
- Inpatient hospital procedures not in ICD-10-PCS
- Durable medical equipment, supplies, and non-physician services billed to Medicare/Medicaid (Correct answer)
- Outpatient mental health and behavioral health services
- International diagnosis codes not covered by ICD-10-CM
Correct answer: Durable medical equipment, supplies, and non-physician services billed to Medicare/Medicaid
HCPCS Level II codes cover items and services not included in CPT, such as durable medical equipment (DME), ambulance services, and certain drugs billed to Medicare and Medicaid.
Question 4: Which federal agency maintains the NCI Thesaurus, a reference vocabulary for cancer-related clinical and research data?
- National Library of Medicine (NLM)
- National Cancer Institute (NCI) (Correct answer)
- Centers for Disease Control and Prevention (CDC)
- Agency for Healthcare Research and Quality (AHRQ)
Correct answer: National Cancer Institute (NCI)
The National Cancer Institute (NCI) maintains the NCI Thesaurus, which provides standard terminology for cancer research, clinical trials, and cancer care.
Question 5: In the context of HL7 CDA and FHIR, 'value set binding' means:
- Hardcoding a single code into a document template
- Specifying which set of codes from a terminology is valid for a given data element (Correct answer)
- Translating codes from one terminology to another at runtime
- Encrypting coded data to protect PHI during transmission
Correct answer: Specifying which set of codes from a terminology is valid for a given data element
Value set binding in HL7 standards specifies the allowed coded values (from one or more terminologies) for a particular data element, ensuring semantic interoperability.
Question 6: The Value Set Authority Center (VSAC) is the authoritative repository for value sets used in which US health IT program?
- HIPAA transaction code sets
- CMS Merit-based Incentive Payment System (MIPS)
- ONC Certified EHR Technology (CEHRT) quality measures (Correct answer)
- FDA adverse event reporting system (FAERS)
Correct answer: ONC Certified EHR Technology (CEHRT) quality measures
VSAC, maintained by NLM, is the authoritative source for value sets referenced in ONC-certified EHR quality measures and clinical quality measures (CQMs).
Question 7: A 'concept orientation' in a clinical terminology means that:
- Each code maps to exactly one unique clinical meaning with no ambiguity (Correct answer)
- Concepts are organized alphabetically for easy lookup
- All synonyms share a single preferred term in every language
- Codes are grouped by organ system or body location
Correct answer: Each code maps to exactly one unique clinical meaning with no ambiguity
Concept orientation means each concept in the terminology has a single, unambiguous meaning, distinguishing it from older classification systems that allowed one code to represent multiple meanings.
AHIC Healthcare Terminologies and Vocabulary Standards 2
Which clinical vocabulary standard uses a description logic–based formalism and is considered the most semantically rich for representing clinical concepts?