PROTECT-CHILD Pediatric Transplant Data Implementation Guide, published by Protect Child. This guide is not an authorized publication; it is the continuous build for version 0.1.0-ci-build built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/hl7-eu/protect-child/ and changes regularly. See the Directory of published versions

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: Lab Test Local Codes - JSON Representation

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{
  "resourceType" : "CodeSystem",
  "id" : "lab-test-local-cs",
  "text" : {
    "status" : "generated",
    "div" : "<div xmlns=\"http://www.w3.org/1999/xhtml\"><p class=\"res-header-id\"><b>Generated Narrative: CodeSystem lab-test-local-cs</b></p><a name=\"lab-test-local-cs\"> </a><a name=\"hclab-test-local-cs\"> </a><p>This case-sensitive code system <code>https://hl7.eu/fhir/ig/hl7.eu.fhir.protect-child/CodeSystem/lab-test-local</code> defines the following codes:</p><table class=\"codes\"><tr><td style=\"white-space:nowrap\"><b>Code</b></td><td><b>Display</b></td><td><b>Definition</b></td></tr><tr><td style=\"white-space:nowrap\">creatinine-egfr<a name=\"lab-test-local-cs-creatinine-egfr\"> </a></td><td>Creatinine eGFR</td><td>Estimated GFR calculated from serum creatinine (formula specified in Observation extension gfr_formula).</td></tr><tr><td style=\"white-space:nowrap\">cystatinc-egfr<a name=\"lab-test-local-cs-cystatinc-egfr\"> </a></td><td>Cystatin C eGFR</td><td>Estimated GFR calculated from Cystatin C (formula specified in Observation extension gfr_cyst_formula).</td></tr><tr><td style=\"white-space:nowrap\">indirect-bilirubin<a name=\"lab-test-local-cs-indirect-bilirubin\"> </a></td><td>Indirect Bilirubin</td><td>Indirect (unconjugated) bilirubin — calculated as total minus direct.</td></tr><tr><td style=\"white-space:nowrap\">proteinuria-creatininuria-ratio<a name=\"lab-test-local-cs-proteinuria-creatininuria-ratio\"> </a></td><td>Proteinuria/creatininuria ratio</td><td>Urine protein-to-creatinine ratio.</td></tr><tr><td style=\"white-space:nowrap\">prothrombin-activity<a name=\"lab-test-local-cs-prothrombin-activity\"> </a></td><td>Prothrombin Activity</td><td>Prothrombin activity (%). Distinct from prothrombin time (seconds/INR).</td></tr><tr><td style=\"white-space:nowrap\">urine-microscopic-hematuria<a name=\"lab-test-local-cs-urine-microscopic-hematuria\"> </a></td><td>Urine microscopic hematuria</td><td>Microscopic hematuria on urine sediment examination.</td></tr></table></div>"
  },
  "url" : "https://hl7.eu/fhir/ig/hl7.eu.fhir.protect-child/CodeSystem/lab-test-local",
  "version" : "0.1.0-ci-build",
  "name" : "LabTestLocalCS",
  "title" : "Lab Test Local Codes",
  "status" : "draft",
  "experimental" : true,
  "date" : "2026-06-05T19:23:32+00:00",
  "publisher" : "Protect Child",
  "contact" : [
    {
      "name" : "Protect Child",
      "telecom" : [
        {
          "system" : "url",
          "value" : "https://protect-child.eu/"
        }
      ]
    }
  ],
  "description" : "Local codes for laboratory tests that do not have a single unambiguous LOINC code in the PROTECT-CHILD context (e.g., calculated values or composite measures).",
  "caseSensitive" : true,
  "content" : "complete",
  "count" : 6,
  "concept" : [
    {
      "code" : "creatinine-egfr",
      "display" : "Creatinine eGFR",
      "definition" : "Estimated GFR calculated from serum creatinine (formula specified in Observation extension gfr_formula)."
    },
    {
      "code" : "cystatinc-egfr",
      "display" : "Cystatin C eGFR",
      "definition" : "Estimated GFR calculated from Cystatin C (formula specified in Observation extension gfr_cyst_formula)."
    },
    {
      "code" : "indirect-bilirubin",
      "display" : "Indirect Bilirubin",
      "definition" : "Indirect (unconjugated) bilirubin — calculated as total minus direct."
    },
    {
      "code" : "proteinuria-creatininuria-ratio",
      "display" : "Proteinuria/creatininuria ratio",
      "definition" : "Urine protein-to-creatinine ratio."
    },
    {
      "code" : "prothrombin-activity",
      "display" : "Prothrombin Activity",
      "definition" : "Prothrombin activity (%). Distinct from prothrombin time (seconds/INR)."
    },
    {
      "code" : "urine-microscopic-hematuria",
      "display" : "Urine microscopic hematuria",
      "definition" : "Microscopic hematuria on urine sediment examination."
    }
  ]
}