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Source1

{
  "resourceType": "Requirements",
  "id": "EHRSFMR2-CP.4.2.1",
  "meta": {
    "profile": [
      "http://hl7.org/ehrs/uv/ehrsfmr2/StructureDefinition/FMFunction"
    ]
  },
  "language": "en",
  "text": {
    "status": "extensions",
    "div": "<!-- snip (see above) -->"
  },
  "extension": [
    {
      "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status",
      "valueCode": "normative"
    },
    {
      "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-wg",
      "valueCode": "ehr"
    }
  ],
  "url": "http://hl7.org/ehrs/uv/ehrsfmr2/Requirements/EHRSFMR2-CP.4.2.1",
  "version": "2.1.2",
  "name": "CP_4_2_1_Medication_Interaction_and_Allergy_Checking",
  "title": "CP.4.2.1 Medication Interaction and Allergy Checking (Function)",
  "status": "active",
  "date": "2026-01-29T18:38:40+00:00",
  "publisher": "HL7 International / Electronic Health Records",
  "contact": [
    {
      "telecom": [
        {
          "system": "url",
          "value": "http://www.hl7.org/Special/committees/ehr"
        }
      ]
    }
  ],
  "description": "Provide alerts for potential medication interactions and medication allergy reactions.",
  "jurisdiction": [
    {
      "coding": [
        {
          "system": "http://unstats.un.org/unsd/methods/m49/m49.htm",
          "code": "001",
          "display": "World"
        }
      ]
    }
  ],
  "purpose": "Check and provide alerts at the time of medication order based upon coded, active and non-active medications for possible interactions, allergies, sensitivities, intolerances, and other adverse reactions.",
  "statement": [
    {
      "extension": [
        {
          "url": "http://hl7.org/ehrs/uv/ehrsfmr2/StructureDefinition/requirements-dependent",
          "valueBoolean": false
        }
      ],
      "key": "EHRSFMR2-CP.4.2.1-01",
      "label": "CP.4.2.1#01",
      "conformance": [
        "SHALL"
      ],
      "conditionality": false,
      "requirement": "The system SHALL conform to function [CPS.4.2.1](Requirements-EHRSFMR2-CPS.4.2.1.html) (Support for Medication Interaction and Allergy Checking) to determine allergic reactions, drug-drug interactions, and other potential adverse reactions, and render alerts or notifications when new medications are ordered.",
      "derivedFrom": "EHR-S_FM_R1.1 DC.1.7.1#16"
    },
    {
      "extension": [
        {
          "url": "http://hl7.org/ehrs/uv/ehrsfmr2/StructureDefinition/requirements-dependent",
          "valueBoolean": false
        }
      ],
      "key": "EHRSFMR2-CP.4.2.1-02",
      "label": "CP.4.2.1#02",
      "conformance": [
        "SHALL"
      ],
      "conditionality": false,
      "requirement": "The system SHALL conform to function [CP.1.2](Requirements-EHRSFMR2-CP.1.2.html) (Manage Allergy, Intolerance and Adverse Reaction List) to provide the ability to manage interaction and allergy checking and render alerts and notifications when new medications are ordered."
    },
    {
      "extension": [
        {
          "url": "http://hl7.org/ehrs/uv/ehrsfmr2/StructureDefinition/requirements-dependent",
          "valueBoolean": false
        }
      ],
      "key": "EHRSFMR2-CP.4.2.1-03",
      "label": "CP.4.2.1#03",
      "conformance": [
        "MAY"
      ],
      "conditionality": false,
      "requirement": "The system MAY provide the ability to render an alert, at the time a new medication is prescribed/ordered, that drug interaction, allergy, and formulary checking will not be performed against uncoded or free text medication(s)."
    },
    {
      "extension": [
        {
          "url": "http://hl7.org/ehrs/uv/ehrsfmr2/StructureDefinition/requirements-dependent",
          "valueBoolean": true
        }
      ],
      "key": "EHRSFMR2-CP.4.2.1-04",
      "label": "CP.4.2.1#04",
      "conformance": [
        "MAY"
      ],
      "conditionality": false,
      "requirement": "The system MAY provide the ability to render a notification, at the time a new uncoded medication is prescribed/ordered, that drug interaction, allergy, and formulary checking will not be performed, according to scope of practice, organizational policy, and/or jurisdictional law."
    },
    {
      "extension": [
        {
          "url": "http://hl7.org/ehrs/uv/ehrsfmr2/StructureDefinition/requirements-dependent",
          "valueBoolean": true
        }
      ],
      "key": "EHRSFMR2-CP.4.2.1-05",
      "label": "CP.4.2.1#05",
      "conformance": [
        "SHALL"
      ],
      "conditionality": false,
      "requirement": "The system SHALL provide the ability to render and tag as inactive recently inactivated medications for inclusion in current medication screening according to scope of practice, organizational policy, and/or jurisdictional law."
    }
  ]
}