Population

The unique identifier of the clinician, pharmacist, or staff member who created the immunization record in the health system. Used for audit trail purposes, accountability tracking, and reconciling vaccine administration entries across clinical and immunization registry workflows.

Timestamp indicating when a vaccination record was first entered into an EHR or immunization registry system such as IIS. Used by data engineers to audit record provenance, detect duplicate immunization entries, and support ETL lineage tracking across HL7 or FHIR-based data pipelines.

The exact timestamp when the immunization record was first entered into the health information system. Supports audit logging, data integrity verification, and helps distinguish between the actual vaccine administration time and when the clinical documentation was completed.

The patient creatinine lab value documented at the time of vaccine administration, used to assess renal function before administering vaccines that require dose adjustment or are contraindicated in patients with impaired kidney function, such as certain adjuvanted or live attenuated vaccines.

The calendar date on which a vaccine was administered to a patient, as recorded in EHR, claims, or state immunization registry systems. Critical for calculating immunization schedules, HEDIS measure compliance, and determining age-appropriate vaccination adherence in population health analytics.

The combined date and time value capturing the exact moment a vaccine was administered, as stored in EHR or immunization information systems. Used by data engineers for precise event sequencing, deduplication logic, and temporal joins across clinical data warehouse vaccination records.

The Drug Enforcement Administration registration number associated with the prescribing or administering clinician for a vaccine order. May be captured in immunization workflows where controlled substances are involved, such as sedation administered alongside the vaccination procedure.

The recorded date of a patient's death as associated with a vaccination record in EHR or public health surveillance systems. Used by data engineers and epidemiologists to support adverse event analysis, VAERS reporting workflows, and mortality linkage in immunization safety studies.

The patient deductible amount applied to an immunization claim, representing the out-of-pocket cost before insurance coverage activates. Relevant in billing workflows where vaccines are not fully covered under preventive care provisions, affecting member cost-sharing and claims adjudication.

The date on which an immunization record was marked as deleted or voided within the health information system. Supports data governance, audit trail maintenance, and ensures accurate immunization history reporting by distinguishing active records from those administratively removed or entered in error.

A flag indicating whether an immunization record has been logically deleted or voided in the system without physical removal. Enables data retention for audit purposes while excluding the record from active immunization histories, registry submissions, and clinical decision support rule evaluations.

A textual label or narrative describing the specific vaccine administered, sourced from EHR, claims, or immunization registry systems. Often mapped to CVX or NDC code sets, this field supports vaccine type classification, reporting logic, and HEDIS measure definitions in data warehouse environments.

Granular clinical and administrative attributes associated with a vaccination record, including lot number, dose sequence, route, and site of administration, as captured in EHR or IIS systems. Used by data engineers to support clinical quality measures, recall programs, and regulatory compliance reporting.

The scheduled date by which the next vaccine dose in a series should be administered based on recommended immunization schedules, prior dose timing, and patient age. Used in clinical reminders, preventive care outreach programs, and population health gap-in-care reporting.

The length of time a vaccine administration encounter or observation period lasted, such as a post-vaccination monitoring window for adverse reactions. Relevant for documenting clinical observation compliance, particularly for vaccines with mandatory waiting periods like live attenuated or high-risk biologics.

The date on which a vaccination record becomes clinically or administratively active within an EHR, immunization registry, or member health record system. Used by data engineers to filter valid immunization history windows, apply HEDIS measurement periods, and manage slowly changing dimension logic in data warehouses.

The electronic mail address associated with a patient or provider contact record linked to a vaccination event in EHR or immunization registry systems. Used by data engineers to support outreach campaign integrations, vaccination reminder workflows, and patient communication audit trails in population health platforms.

A flag identifying whether a vaccine was administered under emergency conditions, such as post-exposure prophylaxis for rabies, tetanus, or hepatitis B. Triggers specialized clinical workflows, expedited supply access, and ensures proper documentation for emergency immunization event reporting and billing.

The date marking the conclusion or expiration of a vaccination record's applicability within EHR, immunization registry, or health plan data systems. Used by data engineers to manage record validity windows, apply temporal filters in cohort logic, and support gap-in-care analyses for multi-dose vaccine series tracking.

The time at which a vaccine administration encounter or post-vaccination observation period concluded. Used in clinical documentation to calculate observation duration, confirm adherence to required post-vaccine monitoring protocols, and support accurate scheduling and encounter billing records.