Population

The concentration or potency of the vaccine antigen per dose unit administered, such as micrograms or international units. Critical for documenting pediatric weight-based dosing, multi-strength vaccine formulations, and ensuring administered concentration aligns with clinical guidelines and lot specifications.

A partial aggregate count or cost value representing a subset of immunization administrations within a defined grouping, such as by vaccine type, age group, or reporting period. Used in immunization program analytics, population health dashboards, and public health coverage reporting.

The unique system-generated key assigned to an immunization administration record within the source clinical or registry system. Enables reliable cross-system record linkage, deduplication across immunization information systems, and longitudinal tracking of a patient's vaccination history.

Reference identifying the intended disease, antigen, or patient population that a vaccine is designed to protect against, coded using CVX, HL7 vaccine group codes, or SNOMED CT disease targets in EHR and immunization registry systems. Data engineers use this field to categorize immunization records by disease focus for population health reporting and CMS preventive care analytics.

The National Provider Identifier taxonomy code identifying the specialty or credential type of the clinician who administered the vaccine. Used to classify administering personnel by scope of practice, support credentialing audits, and meet immunization registry reporting requirements for provider type documentation.

The recorded temperature, typically in Celsius or Fahrenheit, of the vaccine storage unit or cold chain environment at the time of administration. Used to verify vaccine viability, document cold chain compliance, and support adverse event investigations when storage excursions may have compromised immunogenicity.

The date on which an immunization record, series, or immunization-related authorization was ended or deactivated in the clinical system. Used to mark completion of a vaccine series, record exemption expirations, or flag records invalidated due to data corrections or patient eligibility changes.

The time-of-day value recording when a vaccine was administered in EHR and immunization registry systems. Stored in HH:MM:SS format, used in conjunction with immunization date for precise event timestamping, adverse event tracking, and HL7 v2 RXA segment population.

A combined date-time value (e.g., ISO 8601 format) capturing the exact moment a vaccination event was recorded or administered in EHR, IIS, and claims systems. Used for event sequencing, dose-interval validation, audit logging, and HL7 FHIR Immunization.occurrenceDateTime mapping.

The formal descriptive name assigned to a vaccine product or immunization record, such as the CVX-mapped vaccine name or trade name like Fluzone or Prevnar 13. Used to display human-readable vaccine identification in clinical documentation, patient immunization summaries, and registry submissions.

An aggregated count or sum value representing the number of vaccination events for a patient, population cohort, or reporting period in EHR, claims, and public health analytics systems. Used in HEDIS immunization rate calculations, provider scorecards, and population health dashboards.

The cumulative number of vaccine doses administered within a specified population, time period, or reporting category. Used in public health surveillance, immunization coverage rate calculations, VFC program reporting, and tracking progress toward herd immunity thresholds at the patient panel or community level.

A coded category classification for a vaccination record in EHR, claims, and IIS systems, typically mapped to CVX, CPT, or NDC code sets. Distinguishes vaccine classes (e.g., live attenuated, inactivated, mRNA) and supports clinical decision support, formulary management, and quality measure stratification.

The most recent date on which an immunization administration record was modified in the clinical or registry system. Used for data synchronization between immunization information systems, audit trail maintenance, and identifying records requiring reconciliation during patient record merges or data quality reviews.

A classification indicating the clinical priority level or time-sensitivity of a required vaccination, such as routine, accelerated, or emergency. Used for outbreak response scheduling, catch-up immunization planning, and prioritizing vaccine administration workflows for high-risk patients or exposure events.

A discrete measured or coded data point associated with a vaccination record in EHR and laboratory systems, such as titer levels or immune response readings. Used to assess post-vaccination immunity, inform booster decisions, and support integration with lab result (LOINC-coded) data pipelines.

A sequential number or version identifier tracking the iteration of an immunization record, used to manage updates to vaccine administration data over time. Supports audit trail integrity, record reconciliation across immunization registries, and distinguishing the most current version of a modified vaccination entry.

The five or nine-digit US postal ZIP code for the location where a vaccine was administered. Used to support geographic analysis of immunization coverage rates, jurisdictional registry reporting, outbreak investigation mapping, and identifying underserved communities with low vaccination uptake.

A flag indicating that a member received an influenza vaccination during the current flu season measurement period, used in immunization rate reporting and population health analytics targeting vaccine-preventable illness reduction in high-risk populations including elderly, diabetic, and immunocompromised members.

The total number of inpatient hospital admissions for a member during a defined measurement period, a core utilization metric used in population health trend analysis, readmission risk modeling, and value-based care performance measurement where reducing avoidable admissions is a primary program goal.