Allergy intolerance table

  • Release version: Yokohama
  • Updated January 30, 2025
  • 2 minutes to read
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    Summary of Allergy intolerance table

    The Allergy intolerance [snhclsallergy] table in ServiceNow's Healthcare and Life Sciences solution captures detailed clinical assessments of allergies or intolerances. It records a patient’s propensity or risk of adverse reactions to specific substances or substance classes, supporting effective healthcare management and risk mitigation.

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    Key Features

    • Comprehensive Allergy Data: Stores allergy or intolerance information linked to a patient, including allergy codes, clinical category, type, criticality, clinical status, and important dates such as onset and recording.
    • FHIR Standards Alignment: Uses categories, statuses, and types defined by FHIR specifications, ensuring interoperability and standardization across healthcare systems.
    • Role-Based Configuration: Access to configure the table requires the snhcls.admin role, ensuring proper governance.
    • Unique Identification: Each allergy or intolerance record has an auto-generated unique number (starting at ALLR00001001), with options for custom auto-numbering formats.
    • Reference Fields: Links to patient records, healthcare encounters, and external healthcare systems for comprehensive clinical context.

    Key Fields and Their Practical Use

    • Age of onset: Tracks when the allergy or intolerance first appeared, aiding in clinical history analysis.
    • Category: Classifies substances into Biological, Environment, Food, or Medication to support clinical filtering and reporting.
    • Clinical status: Indicates whether the allergy or intolerance is Active, Inactive, or Resolved to guide clinical decision-making.
    • Criticality: Assesses the potential severity of reactions (High, Low, Unable to access), supporting risk prioritization.
    • Date fields: Capture the date/time of onset and recording for audit and timeline reconstruction.
    • Verification status: Documents the certainty of the allergy assertion (Confirmed, Entered in error, Refuted, Unconfirmed), enhancing data reliability.
    • Type: Differentiates between Allergy and Intolerance, clarifying the underlying physiological mechanism.

    Practical Benefits for ServiceNow Customers

    By utilizing the Allergy intolerance table, healthcare organizations can maintain standardized, detailed allergy and intolerance records integrated within their ServiceNow instance. This facilitates accurate clinical assessments, supports patient safety through better risk identification, and ensures compliance with healthcare data standards. The table’s references and statuses enable seamless integration with external systems and enhance data trustworthiness, empowering care teams to make informed decisions efficiently.

    The Allergy intolerance [sn_hcls_allergy] table stores the information about a clinical assessment of an allergy or intolerance; a propensity, or a potential risk to an individual, to have an adverse reaction on future exposure to the specified substance, or class of substance.

    Key features

    • Stores any allergy or intolerance associated with a patient.
    • Includes the allergy code, type, category, criticality, clinical status, date recorded, and date of onset.

    Role required to configure the table: sn_hcls.admin.

    For more information, see Healthcare and Life Sciences data model.

    Table 1. Allergy intolerance form fields

    Field

    Data type

    Description

    Age of onset

    String

    Age at which an individual first experience the allergy or intolerance.

    Allergy intolerance code

    Reference

    Identifier of the allergy or intolerance.

    Category

    Choice list

    Category of an identified substance associated with the allergy or intolerance.

    The following categories are available by default:
    • Biological
    • Environment
    • Food
    • Medication

    For more information about the available categories, see allergy intolerance categories defined in the FHIR specifications.

    Clinical status

    Choice list

    Status of the allergy or intolerance under clinical trial.

    The following statuses are available by default:
    • Active
    • Inactive
    • Resolved

    For more information about the available statuses, see allergy intolerance clinical statuses defined in the FHIR specifications.

    Criticality

    Choice list

    Estimate of the potential clinical harm or seriousness of a reaction to an identified substance.

    The following types are available by default:
    • High
    • Low
    • Unable to access

    For more information about the available types, see allergy intolerance criticality types defined in the FHIR specifications.

    Date of onset

    Date/Time

    Date and time that the allergy or intolerance began.

    Date recorded

    Date/Time

    Date the first version of the allergy or intolerance was recorded into the application.

    Encounter

    Reference

    Healthcare event during which this allergy intolerance was asserted.

    External id

    String

    Identifier of the record in an electronic medical record (EMR) system.

    Number

    String

    Alpha-numeric profile identifier of the allergy intolerance.

    The value is auto-generated and is incremented every time you add a new allergy or intolerance to your ServiceNow instance. The initial value for the Number field is ALLR00001001.
    Note:
    To customize the number, define the auto-numbering format for the Allergy intolerance [sn_hcls_allergy] table. For more information, see Add auto-numbering records in a table.

    Patient

    Reference

    Patient who has the allergy or intolerance.

    Source

    Reference

    Source system details of an external healthcare system in a ServiceNow instance.

    Type

    Choice list

    Underlying physiological mechanism for a reaction risk.

    The following types are available by default:
    • Allergy
    • Intolerance

    For more information about the available types, see allergy intolerance types defined in the FHIR specifications.

    Verification status

    Choice list

    Assertion about certainty associated with a propensity or potential risk of a reaction to the identified substance.

    The following statuses are available by default:
    • Confirmed
    • Entered in error
    • Refuted
    • Unconfirmed

    For more information about the available statuses, see allergy intolerance verification statuses defined in the FHIR specifications.