HL7 Electronic Health Record System Functional Model, Release 2.1.1
2.1.1 - Normative

HL7 Electronic Health Record System Functional Model, Release 2.1.1, published by HL7 International / Electronic Health Records. This guide is not an authorized publication; it is the continuous build for version 2.1.1 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/HL7/ehrsfm-ig/ and changes regularly. See the Directory of published versions

## : CP.4.2.2 Patient-Specific Medication Dosing and Warnings (Function)

Page standards status: Normative

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    {
      "resourceType" : "Requirements",
      "id" : "EHRSFMR2-CP.4.2.2",
      "meta" : {
        "profile" : [
          🔗 "http://hl7.org/ehrs/uv/ehrsfmr2/StructureDefinition/FMFunction"
        ]
      },
      "language" : "en",
      "text" : {
        "status" : "extensions",
        "div" : "<div xml:lang=\"en\" xmlns=\"http://www.w3.org/1999/xhtml\" lang=\"en\">\n    \n    \n    <div id=\"description\"><b>Description <a href=\"https://hl7.org/fhir/versions.html#std-process\" title=\"Informative Content\" class=\"informative-flag\">I</a>:</b> <div><p>Provide parameter-based (e.g., weight, lean body mass, age, sensitivity, genomics, body surface area) medication dosing recommendations and warnings for simple medications and compounded medications at the time of order entry.</p>\n</div></div>\n    \n    \n    \n    <div id=\"requirements\"><b>Criteria <a href=\"https://hl7.org/fhir/versions.html#std-process\" title=\"Normative Content\" class=\"normative-flag\">N</a>:</b></div>\n    \n    <table id=\"statements\" class=\"grid dict\">\n        \n        <tr>\n            <td style=\"padding-left: 4px;\">\n            CP.4.2.2#01\n            </td>\n            <td style=\"padding-left: 4px;\">\n            SHALL\n            \n                \n            \n            \n            \n            </td>\n            <td style=\"padding-left: 4px;\" class=\"requirement\">\n                <div><p>The system SHALL conform to function <a href=\"Requirements-EHRSFMR2-CPS.4.2.2.html\">CPS.4.2.2</a> (Support for Patient-Specific Dosing and Warnings) to determine potential adverse reactions and render alerts or notifications when new medications are ordered.</p>\n</div>\n                \n            </td>\n        </tr>\n        \n        <tr>\n            <td style=\"padding-left: 4px;\">\n            CP.4.2.2#02\n            </td>\n            <td style=\"padding-left: 4px;\">\n            SHOULD\n            \n                \n            \n            \n            \n            </td>\n            <td style=\"padding-left: 4px;\" class=\"requirement\">\n                <div><p>The system SHOULD provide the ability to determine and render weight-specific dose suggestions and auto-populate (e.g., default) medication orders based on the suggested dosage.</p>\n</div>\n                \n            </td>\n        </tr>\n        \n        <tr>\n            <td style=\"padding-left: 4px;\">\n            CP.4.2.2#03\n            </td>\n            <td style=\"padding-left: 4px;\">\n            MAY\n            \n                \n            \n            \n            \n            </td>\n            <td style=\"padding-left: 4px;\" class=\"requirement\">\n                <div><p>The system MAY provide the ability to capture alternative patient dosing weight(s) (e.g., ideal body weight or dry weight vs. actual patient weight) for the purpose of dose calculation.</p>\n</div>\n                \n            </td>\n        </tr>\n        \n        <tr>\n            <td style=\"padding-left: 4px;\">\n            CP.4.2.2#04\n            </td>\n            <td style=\"padding-left: 4px;\">\n            SHOULD\n            \n                \n            \n            <span style=\"border-radius: 999px;margin: 2px 2px;font-size: 10px;display: inline-block;padding: 3px 5px;letter-spacing: 0.5px;line-height: 1;white-space: nowrap;background-color: #f3e5ff;color: #7b1fa2;border: 1px solid #d1a3ff;\">conditional</span>\n            \n            </td>\n            <td style=\"padding-left: 4px;\" class=\"requirement\">\n                <div><p>IF the system provides the ability to capture alternative patient dosing weight(s), THEN the system SHOULD provide the ability to determine and render alternative weight-specific dose recommendations and auto-populate medication orders based on the suggested dosage.</p>\n</div>\n                \n            </td>\n        </tr>\n        \n        <tr>\n            <td style=\"padding-left: 4px;\">\n            CP.4.2.2#05\n            </td>\n            <td style=\"padding-left: 4px;\">\n            SHOULD\n            \n                \n            \n            \n            \n            </td>\n            <td style=\"padding-left: 4px;\" class=\"requirement\">\n                <div><p>The system SHOULD provide the ability to render patient-specific medication dosing recommendations based on the patient's age and weight/body surface area.</p>\n</div>\n                \n            </td>\n        </tr>\n        \n        <tr>\n            <td style=\"padding-left: 4px;\">\n            CP.4.2.2#06\n            </td>\n            <td style=\"padding-left: 4px;\">\n            MAY\n            \n                \n            \n            \n            \n            </td>\n            <td style=\"padding-left: 4px;\" class=\"requirement\">\n                <div><p>The system MAY provide the ability to render patient-specific medication dosing recommendations based on previous patient experience (e.g., adverse reaction, type, and severity) with the same medication.</p>\n</div>\n                \n            </td>\n        </tr>\n        \n        <tr>\n            <td style=\"padding-left: 4px;\">\n            CP.4.2.2#07\n            </td>\n            <td style=\"padding-left: 4px;\">\n            SHOULD\n            \n                \n            \n            \n            \n            </td>\n            <td style=\"padding-left: 4px;\" class=\"requirement\">\n                <div><p>The system SHOULD provide the ability to determine weight-based medication dosing when doses are based on the patient's weight (e.g., mg/kg).</p>\n</div>\n                \n            </td>\n        </tr>\n        \n        <tr>\n            <td style=\"padding-left: 4px;\">\n            CP.4.2.2#08\n            </td>\n            <td style=\"padding-left: 4px;\">\n            MAY\n            \n                \n            \n            \n            \n            </td>\n            <td style=\"padding-left: 4px;\" class=\"requirement\">\n                <div><p>The system MAY provide the ability to determine and render medication orders in which the weight-specific dose suggested employs a starting range with incremental changes toward a target range (e.g., a target therapeutic index).</p>\n</div>\n                \n            </td>\n        </tr>\n        \n        <tr>\n            <td style=\"padding-left: 4px;\">\n            CP.4.2.2#09\n            </td>\n            <td style=\"padding-left: 4px;\">\n            MAY\n            \n                \n            \n            \n            \n            </td>\n            <td style=\"padding-left: 4px;\" class=\"requirement\">\n                <div><p>The system MAY render a notification requesting the parameters (e.g., coefficients, exponents, formulas) required to calculate the body surface area.</p>\n</div>\n                \n            </td>\n        </tr>\n        \n        <tr>\n            <td style=\"padding-left: 4px;\">\n            CP.4.2.2#10\n            </td>\n            <td style=\"padding-left: 4px;\">\n            MAY\n            \n                \n            \n            \n            \n            </td>\n            <td style=\"padding-left: 4px;\" class=\"requirement\">\n                <div><p>The system MAY provide the ability to determine and present dose ranges based on patient age.</p>\n</div>\n                \n            </td>\n        </tr>\n        \n        <tr>\n            <td style=\"padding-left: 4px;\">\n            CP.4.2.2#11\n            </td>\n            <td style=\"padding-left: 4px;\">\n            MAY\n            \n                \n            \n            \n            \n            </td>\n            <td style=\"padding-left: 4px;\" class=\"requirement\">\n                <div><p>The system MAY provide the ability to manage complex medication orders that include dosing based on either physical status or laboratory values.</p>\n</div>\n                \n            </td>\n        </tr>\n        \n        <tr>\n            <td style=\"padding-left: 4px;\">\n            CP.4.2.2#12\n            </td>\n            <td style=\"padding-left: 4px;\">\n            SHALL\n            \n                \n            \n            \n            \n            </td>\n            <td style=\"padding-left: 4px;\" class=\"requirement\">\n                <div><p>The system SHALL provide the ability to determine and present drug dosing based on custom compounded medication components.</p>\n</div>\n                \n            </td>\n        </tr>\n        \n        <tr>\n            <td style=\"padding-left: 4px;\">\n            CP.4.2.2#13\n            </td>\n            <td style=\"padding-left: 4px;\">\n            SHOULD\n            \n                \n            \n            \n            \n            </td>\n            <td style=\"padding-left: 4px;\" class=\"requirement\">\n                <div><p>The system SHOULD provide the ability to manage medication orders with patient-specific dose calculations (e.g., by weight, body surface area or genotype).</p>\n</div>\n                \n            </td>\n        </tr>\n        \n    </table>\n</div>"
      },
      "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.4.2.2",
      "version" : "2.1.1",
      "name" : "CP_4_2_2_Patient_Specific_Medication_Dosing_and_Warnings",
      "title" : "CP.4.2.2 Patient-Specific Medication Dosing and Warnings (Function)",
      "status" : "active",
      "date" : "2025-12-13T09:06:06+00:00",
      "publisher" : "HL7 International / Electronic Health Records",
      "contact" : [
        {
          "telecom" : [
            {
              "system" : "url",
              "value" : "http://www.hl7.org/Special/committees/ehr"
            }
          ]
        }
      ],
      "description" : "Render medication dosing and warnings related to a medication order based on patient-specific parameters.",
      "jurisdiction" : [
        {
          "coding" : [
            {
              "system" : "http://unstats.un.org/unsd/methods/m49/m49.htm",
              "code" : "001",
              "display" : "World"
            }
          ]
        }
      ],
      "purpose" : "Provide parameter-based (e.g., weight, lean body mass, age, sensitivity, genomics, body surface area) medication dosing recommendations and warnings for simple medications and compounded medications at the time of order entry.",
      "statement" : [
        {
          "extension" : [
            {
              "url" : "http://hl7.org/ehrs/uv/ehrsfmr2/StructureDefinition/requirements-dependent",
              "valueBoolean" : false
            }
          ],
          "key" : "EHRSFMR2-CP.4.2.2-01",
          "label" : "CP.4.2.2#01",
          "conformance" : [
            "SHALL"
          ],
          "conditionality" : false,
          "requirement" : "The system SHALL conform to function [CPS.4.2.2](Requirements-EHRSFMR2-CPS.4.2.2.html) (Support for Patient-Specific Dosing and Warnings) to determine potential adverse reactions and render alerts or notifications when new medications are ordered.",
          "derivedFrom" : "EHR-S_FM_R1.1 DC.1.7.1#17"
        },
        {
          "extension" : [
            {
              "url" : "http://hl7.org/ehrs/uv/ehrsfmr2/StructureDefinition/requirements-dependent",
              "valueBoolean" : false
            }
          ],
          "key" : "EHRSFMR2-CP.4.2.2-02",
          "label" : "CP.4.2.2#02",
          "conformance" : [
            "SHOULD"
          ],
          "conditionality" : false,
          "requirement" : "The system SHOULD provide the ability to determine and render weight-specific dose suggestions and auto-populate (e.g., default) medication orders based on the suggested dosage.",
          "derivedFrom" : "EHR-S_FM_R1.1 DC.1.7.1#18"
        },
        {
          "extension" : [
            {
              "url" : "http://hl7.org/ehrs/uv/ehrsfmr2/StructureDefinition/requirements-dependent",
              "valueBoolean" : false
            }
          ],
          "key" : "EHRSFMR2-CP.4.2.2-03",
          "label" : "CP.4.2.2#03",
          "conformance" : [
            "MAY"
          ],
          "conditionality" : false,
          "requirement" : "The system MAY provide the ability to capture alternative patient dosing weight(s) (e.g., ideal body weight or dry weight vs. actual patient weight) for the purpose of dose calculation."
        },
        {
          "extension" : [
            {
              "url" : "http://hl7.org/ehrs/uv/ehrsfmr2/StructureDefinition/requirements-dependent",
              "valueBoolean" : false
            }
          ],
          "key" : "EHRSFMR2-CP.4.2.2-04",
          "label" : "CP.4.2.2#04",
          "conformance" : [
            "SHOULD"
          ],
          "conditionality" : true,
          "requirement" : "IF the system provides the ability to capture alternative patient dosing weight(s), THEN the system SHOULD provide the ability to determine and render alternative weight-specific dose recommendations and auto-populate medication orders based on the suggested dosage."
        },
        {
          "extension" : [
            {
              "url" : "http://hl7.org/ehrs/uv/ehrsfmr2/StructureDefinition/requirements-dependent",
              "valueBoolean" : false
            }
          ],
          "key" : "EHRSFMR2-CP.4.2.2-05",
          "label" : "CP.4.2.2#05",
          "conformance" : [
            "SHOULD"
          ],
          "conditionality" : false,
          "requirement" : "The system SHOULD provide the ability to render patient-specific medication dosing recommendations based on the patient's age and weight/body surface area."
        },
        {
          "extension" : [
            {
              "url" : "http://hl7.org/ehrs/uv/ehrsfmr2/StructureDefinition/requirements-dependent",
              "valueBoolean" : false
            }
          ],
          "key" : "EHRSFMR2-CP.4.2.2-06",
          "label" : "CP.4.2.2#06",
          "conformance" : [
            "MAY"
          ],
          "conditionality" : false,
          "requirement" : "The system MAY provide the ability to render patient-specific medication dosing recommendations based on previous patient experience (e.g., adverse reaction, type, and severity) with the same medication."
        },
        {
          "extension" : [
            {
              "url" : "http://hl7.org/ehrs/uv/ehrsfmr2/StructureDefinition/requirements-dependent",
              "valueBoolean" : false
            }
          ],
          "key" : "EHRSFMR2-CP.4.2.2-07",
          "label" : "CP.4.2.2#07",
          "conformance" : [
            "SHOULD"
          ],
          "conditionality" : false,
          "requirement" : "The system SHOULD provide the ability to determine weight-based medication dosing when doses are based on the patient's weight (e.g., mg/kg)."
        },
        {
          "extension" : [
            {
              "url" : "http://hl7.org/ehrs/uv/ehrsfmr2/StructureDefinition/requirements-dependent",
              "valueBoolean" : false
            }
          ],
          "key" : "EHRSFMR2-CP.4.2.2-08",
          "label" : "CP.4.2.2#08",
          "conformance" : [
            "MAY"
          ],
          "conditionality" : false,
          "requirement" : "The system MAY provide the ability to determine and render medication orders in which the weight-specific dose suggested employs a starting range with incremental changes toward a target range (e.g., a target therapeutic index)."
        },
        {
          "extension" : [
            {
              "url" : "http://hl7.org/ehrs/uv/ehrsfmr2/StructureDefinition/requirements-dependent",
              "valueBoolean" : false
            }
          ],
          "key" : "EHRSFMR2-CP.4.2.2-09",
          "label" : "CP.4.2.2#09",
          "conformance" : [
            "MAY"
          ],
          "conditionality" : false,
          "requirement" : "The system MAY render a notification requesting the parameters (e.g., coefficients, exponents, formulas) required to calculate the body surface area."
        },
        {
          "extension" : [
            {
              "url" : "http://hl7.org/ehrs/uv/ehrsfmr2/StructureDefinition/requirements-dependent",
              "valueBoolean" : false
            }
          ],
          "key" : "EHRSFMR2-CP.4.2.2-10",
          "label" : "CP.4.2.2#10",
          "conformance" : [
            "MAY"
          ],
          "conditionality" : false,
          "requirement" : "The system MAY provide the ability to determine and present dose ranges based on patient age."
        },
        {
          "extension" : [
            {
              "url" : "http://hl7.org/ehrs/uv/ehrsfmr2/StructureDefinition/requirements-dependent",
              "valueBoolean" : false
            }
          ],
          "key" : "EHRSFMR2-CP.4.2.2-11",
          "label" : "CP.4.2.2#11",
          "conformance" : [
            "MAY"
          ],
          "conditionality" : false,
          "requirement" : "The system MAY provide the ability to manage complex medication orders that include dosing based on either physical status or laboratory values."
        },
        {
          "extension" : [
            {
              "url" : "http://hl7.org/ehrs/uv/ehrsfmr2/StructureDefinition/requirements-dependent",
              "valueBoolean" : false
            }
          ],
          "key" : "EHRSFMR2-CP.4.2.2-12",
          "label" : "CP.4.2.2#12",
          "conformance" : [
            "SHALL"
          ],
          "conditionality" : false,
          "requirement" : "The system SHALL provide the ability to determine and present drug dosing based on custom compounded medication components."
        },
        {
          "extension" : [
            {
              "url" : "http://hl7.org/ehrs/uv/ehrsfmr2/StructureDefinition/requirements-dependent",
              "valueBoolean" : false
            }
          ],
          "key" : "EHRSFMR2-CP.4.2.2-13",
          "label" : "CP.4.2.2#13",
          "conformance" : [
            "SHOULD"
          ],
          "conditionality" : false,
          "requirement" : "The system SHOULD provide the ability to manage medication orders with patient-specific dose calculations (e.g., by weight, body surface area or genotype)."
        }
      ]
    }