Glossary

Healthcare data glossary

Plain-English definitions of the drug pricing, FDA, provider, payer, coding and health IT terms behind U.S. healthcare data. Written for the people who analyze it, sell into it and build on it.

September 14, 2026Last reviewed

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  • 21st Century Cures Act
  • 340B Contract Pharmacy
  • 340B Covered Entity
  • 340B Drug Pricing Program
  • 505(b)(2) Pathway
  • 510(k) Premarket Notification

A

  • Abbreviated New Drug ApplicationANDA
  • ACA Marketplace
  • Accelerated Approval
  • Accountable Care OrganizationACO
  • ACO REACH Model
  • Active Pharmaceutical IngredientAPI
  • Advanced Practice ProviderAPP
  • Adverse Drug EventADE
  • All-Payer Claims DatabaseAPCD
  • Allowed Amount
  • Alternative Payment ModelAPM
  • Ambulatory Surgery CenterASC
  • Area Deprivation IndexADI
  • Attending Physician
  • Authorized Generic
  • Average Manufacturer PriceAMP
  • Average Sales PriceASP
  • Average Wholesale PriceAWP

B

  • Beneficiary
  • Best Price
  • Biologic
  • Biologics License ApplicationBLA
  • Biologics Price Competition and Innovation ActBPCIA
  • Biomarker
  • Biosimilar
  • Board Certification
  • Boxed Warning
  • Brand-Name Drug
  • Breakthrough Therapy Designation
  • Bundled Payment
  • Business Associate AgreementBAA

C

  • Capitation
  • CAQH ProView
  • Cell Therapy
  • Certificate of NeedCON
  • Certified EHR TechnologyCEHRT
  • Certified Health IT Product ListCHPL
  • Chargemaster
  • Children's Health Insurance ProgramCHIP
  • Claims Adjudication
  • Claims Data
  • CLIA Certificate
  • Clinical Decision SupportCDS
  • Clinical Laboratory
  • Clinical Trial
  • Clinical Trial Site
  • ClinicalTrials.gov
  • ClinVar
  • CMS Certification NumberCCN
  • Commercial Health Insurance
  • Community Health Needs AssessmentCHNA
  • Companion DiagnosticCDx
  • Competitive IntelligenceCI
  • Compounded Drug
  • Conrad 30 Waiver Program
  • Consolidated Clinical Document ArchitectureC-CDA
  • Contract Research OrganizationCRO
  • Controlled Substance
  • Cost Sharing
  • Covered Lives
  • Credentialing
  • Critical Access HospitalCAH
  • Current Good Manufacturing PracticeCGMP
  • Current Procedural TerminologyCPT

D

  • Data Enrichment
  • De-Identification
  • DEA Registration Number
  • Decentralized Clinical TrialDCT
  • Dialysis Facility
  • Digital Opinion LeaderDOL
  • Dispensing Fee
  • Disproportionate Share HospitalDSH
  • Dosage Form
  • Drug Establishment Registration
  • Drug Indication
  • Drug Launch
  • Drug Rebate
  • Drug Recall
  • Drug Shortage
  • Dual Eligible Beneficiary

E

  • Electronic Health RecordEHR
  • Electronic Medical RecordEMR
  • Electronic PrescribingeRx
  • Eligibility Criteria
  • Entity Resolution
  • Established Pharmacologic ClassEPC
  • Expanded Access

F

  • Fast Healthcare Interoperability ResourcesFHIR
  • Fast Track Designation
  • FDA Adverse Event Reporting SystemFAERS
  • FDA Enforcement Report
  • FDA Form 483
  • Federal Upper LimitFUL
  • Federally Qualified Health CenterFQHC
  • Fee-for-ServiceFFS
  • Food and Drug AdministrationFDA
  • Formulary
  • Formulary Tier
  • FQHC Look-Alike

G

  • Gene Therapy
  • Generic Drug
  • Genetic Testing
  • Genetic Variant
  • Germline vs Somatic Variant
  • GLP-1 Receptor Agonist
  • Good Clinical PracticeGCP
  • Graduate Medical EducationGME
  • Gross-to-Net
  • Group Practice
  • Group Purchasing OrganizationGPO

H

  • Hatch-Waxman Act
  • HCP Segmentation
  • HCP Targeting
  • Health Center Program
  • Health Equity
  • Health Information ExchangeHIE
  • Health Insurance Portability and Accountability ActHIPAA
  • Health IT Surveillance
  • Health Level SevenHL7
  • Health Professional Shortage AreaHPSA
  • Health Resources and Services AdministrationHRSA
  • Health System
  • Healthcare API
  • Healthcare Claim
  • Healthcare Common Procedure Coding SystemHCPCS
  • Healthcare CRM
  • Healthcare Lead Generation
  • Healthcare ProfessionalHCP
  • Healthcare Provider Taxonomy Code
  • HGVS Nomenclature
  • Hierarchical Condition CategoryHCC
  • HITECH Act
  • Home Health AgencyHHA
  • Hospice
  • Hospital
  • Hospital Outpatient DepartmentHOPD
  • Hospital Price Transparency
  • Hospital Privileges
  • Hospital Star Rating
  • Hospitalist
  • HPSA Score

I

  • ICD-10-CM
  • ICD-10-PCS
  • Independent Diagnostic Testing FacilityIDTF
  • Information Blocking
  • Informed Consent
  • Inpatient Prospective Payment SystemIPPS
  • Inpatient Rehabilitation FacilityIRF
  • Institutional Review BoardIRB
  • Integrated Delivery NetworkIDN
  • Interchangeable Biosimilar
  • Interoperability
  • Investigational New Drug ApplicationIND

J

  • J-Code
  • Joint Commission Accreditation

K

  • Key Opinion LeaderKOL

L

  • Locum Tenens
  • LOINC
  • Long-Term Care HospitalLTCH
  • Loss of ExclusivityLOE

M

  • Managed Care OrganizationMCO
  • Market Access
  • Maximum Allowable CostMAC
  • Mechanism of ActionMOA
  • Medicaid
  • Medicaid Drug Rebate ProgramMDRP
  • Medical Affairs
  • Medical Science LiaisonMSL
  • Medical Specialty
  • Medical Subject HeadingsMeSH
  • Medically Underserved AreaMUA
  • Medically Underserved PopulationMUP
  • Medicare
  • Medicare Administrative ContractorMAC
  • Medicare AdvantageMA
  • Medicare Assignment
  • Medicare Cost Report
  • Medicare Coverage DeterminationNCD / LCD
  • Medicare Drug Price Negotiation Program
  • Medicare Part A
  • Medicare Part B
  • Medicare Part D
  • Medicare Part D Prescriber Data
  • Medicare Physician and Other Practitioners Data
  • Medicare Physician Fee ScheduleMPFS
  • Medicare Promoting Interoperability Program
  • Medicare Severity Diagnosis Related GroupMS-DRG
  • Medicare Shared Savings ProgramMSSP
  • Medicare Star Ratings
  • MedWatch
  • Merit-based Incentive Payment SystemMIPS
  • Monoclonal AntibodymAb

N

  • National Average Drug Acquisition CostNADAC
  • National Drug CodeNDC
  • National Health Service CorpsNHSC
  • National Plan and Provider Enumeration SystemNPPES
  • National Provider IdentifierNPI
  • NCT Number
  • New Drug ApplicationNDA
  • New PrescriptionsNRx
  • New-to-Brand PrescriptionsNBRx
  • Next-Generation SequencingNGS
  • Nurse PractitionerNP

O

  • Off-Label Use
  • ONC Health IT Certification Program
  • Open Payments
  • Orange Book
  • Orphan Drug
  • Orphan Drug Designation
  • Outpatient Prospective Payment SystemOPPS
  • Over-the-Counter DrugOTC

P

  • Paragraph IV Certification
  • Patent Cliff
  • Patient Assistance ProgramPAP
  • Patient Journey
  • Patient Leakage
  • Payer Mix
  • PharmacogenomicsPGx
  • Pharmacy Benefit ManagerPBM
  • Phase 1 Clinical Trial
  • Phase 2 Clinical Trial
  • Phase 3 Clinical Trial
  • Phase 4 Clinical Trial
  • Physician
  • Physician AssistantPA
  • Physician Liaison
  • Physician Payments Sunshine Act
  • Physician Recruitment
  • Pipeline Drug
  • Place of Service CodePOS
  • Precision Medicine
  • Premarket ApprovalPMA
  • Prescriber
  • Prescribing InformationPI
  • Prescription DrugRx
  • Primary Care ProviderPCP
  • Primary Endpoint
  • Principal InvestigatorPI
  • Prior Authorization
  • Priority Review
  • Procedure Code Modifier
  • Procedure Volume
  • Protected Health InformationPHI
  • Provider Data ManagementPDM
  • Provider Directory
  • Provider Enrollment, Chain and Ownership SystemPECOS
  • Psychiatric Hospital
  • Public Use FilePUF
  • Purple Book

Q

  • Qualified Health Information NetworkQHIN

R

  • Randomized Controlled TrialRCT
  • Real-World DataRWD
  • Real-World EvidenceRWE
  • Recall Classification
  • Reference Listed DrugRLD
  • Reference Product
  • Referral Network
  • Referring Physician
  • Regulatory Exclusivity
  • Relative Value UnitRVU
  • Remote Patient MonitoringRPM
  • Risk Adjustment
  • Risk Evaluation and Mitigation StrategyREMS
  • Route of Administration
  • Rural Emergency HospitalREH
  • Rural Health ClinicRHC
  • Rural-Urban Commuting Area CodesRUCA
  • RxNorm

S

  • Safety-Net Provider
  • Self-Funded Health Plan
  • Share of VoiceSOV
  • Short-Term Acute Care Hospital
  • Site of Care
  • Site-Neutral Payment
  • Skilled Nursing FacilitySNF
  • Sliding Fee Discount Program
  • Small-Molecule Drug
  • SNOMED CT
  • Social Determinants of HealthSDOH
  • Specialty Drug
  • Specialty Pharmacy
  • Staffed Bed
  • State Medical License
  • Step Therapy
  • Structured Product LabelingSPL

T

  • Taxpayer Identification NumberTIN
  • Teaching Hospital
  • Telehealth
  • Territory Planning
  • Therapeutic Equivalence CodeTE Code
  • Total Addressable MarketTAM
  • Total PrescriptionsTRx
  • Trial Sponsor
  • Trusted Exchange Framework and Common AgreementTEFCA

U

  • Uncompensated Care
  • Unified Medical Language SystemUMLS
  • Uniform Data SystemUDS
  • Unique Device IdentifierUDI
  • Unique Ingredient IdentifierUNII
  • United States Core Data for InteroperabilityUSCDI
  • Urgent Care Center

V

  • Value-Based Care
  • Variant Classification
  • Variant of Uncertain SignificanceVUS

W

  • Warning Letter
  • White Space Analysis
  • Wholesale Acquisition CostWAC