Lithuanian Laboratory Implementation Guide, published by Lithuanian Medical Library. This guide is not an authorized publication; it is the continuous build for version 0.0.1 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/HL7LT/ig-lt-lab/ and changes regularly. See the Directory of published versions

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: pLVI Classification

Draft as of 2026-03-29

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{
  "resourceType" : "CodeSystem",
  "id" : "plvi-classification",
  "language" : "en",
  "text" : {
    "status" : "generated",
    "div" : "<div xml:lang=\"en\" lang=\"en\"><hr/><p><b>English</b></p><hr/><p class=\"res-header-id\"><b>Generated Narrative: CodeSystem plvi-classification</b></p><a name=\"plvi-classification\"> </a><a name=\"hcplvi-classification\"> </a><div style=\"display: inline-block; background-color: #d9e0e7; padding: 6px; margin: 4px; border: 1px solid #8da1b4; border-radius: 5px; line-height: 60%\"><p style=\"margin-bottom: 0px\">Language: en</p></div><p>This case-sensitive code system <code>https://tx.hl7.lt/fhir/CodeSystem/plvi-classification</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\">plvi-0<a name=\"plvi-classification-plvi-0\"> </a></td><td>pLVI-0: not detected</td><td>No lymphovascular invasion detected</td></tr><tr><td style=\"white-space:nowrap\">plvi-1<a name=\"plvi-classification-plvi-1\"> </a></td><td>pLVI-1: spreading, otherwise unclassified</td><td>Lymphovascular invasion present, otherwise not classified</td></tr><tr><td style=\"white-space:nowrap\">plvi-2<a name=\"plvi-classification-plvi-2\"> </a></td><td>pLVI-2: only in lymphatic vessels and small blood vessels (L)</td><td>Present only in lymphatic vessels and small blood vessels</td></tr><tr><td style=\"white-space:nowrap\">plvi-3<a name=\"plvi-classification-plvi-3\"> </a></td><td>pLVI-3: only in veins (large, thick-walled blood vessels) (V)</td><td>Present only in veins (large, thick-walled blood vessels)</td></tr><tr><td style=\"white-space:nowrap\">plvi-4<a name=\"plvi-classification-plvi-4\"> </a></td><td>pLVI-4: present in both lymphatic vessels and veins (LV)</td><td>Present in both lymphatic vessels and veins</td></tr><tr><td style=\"white-space:nowrap\">plvi-9<a name=\"plvi-classification-plvi-9\"> </a></td><td>pLVI-9: undetectable/unknown</td><td>Lymphovascular invasion status not determined or unknown</td></tr></table></div>"
  },
  "url" : "https://tx.hl7.lt/fhir/CodeSystem/plvi-classification",
  "version" : "0.0.1",
  "name" : "PlviClassificationLtLab",
  "title" : "pLVI Classification",
  "status" : "draft",
  "experimental" : true,
  "date" : "2026-03-29T11:59:27+00:00",
  "publisher" : "Lithuanian Medical Library",
  "contact" : [
    {
      "name" : "Lithuanian Medical Library",
      "telecom" : [
        {
          "system" : "url",
          "value" : "https://medicinosnk.lt"
        },
        {
          "system" : "email",
          "value" : "info@medicinosnk.lt"
        }
      ]
    }
  ],
  "description" : "Peritumoral lymphovascular invasion (pLVI) 6-level classification for breast cancer pathology.",
  "jurisdiction" : [
    {
      "coding" : [
        {
          "system" : "urn:iso:std:iso:3166",
          "code" : "LT"
        }
      ]
    }
  ],
  "caseSensitive" : true,
  "content" : "complete",
  "count" : 6,
  "concept" : [
    {
      "code" : "plvi-0",
      "display" : "pLVI-0: not detected",
      "definition" : "No lymphovascular invasion detected"
    },
    {
      "code" : "plvi-1",
      "display" : "pLVI-1: spreading, otherwise unclassified",
      "definition" : "Lymphovascular invasion present, otherwise not classified"
    },
    {
      "code" : "plvi-2",
      "display" : "pLVI-2: only in lymphatic vessels and small blood vessels (L)",
      "definition" : "Present only in lymphatic vessels and small blood vessels"
    },
    {
      "code" : "plvi-3",
      "display" : "pLVI-3: only in veins (large, thick-walled blood vessels) (V)",
      "definition" : "Present only in veins (large, thick-walled blood vessels)"
    },
    {
      "code" : "plvi-4",
      "display" : "pLVI-4: present in both lymphatic vessels and veins (LV)",
      "definition" : "Present in both lymphatic vessels and veins"
    },
    {
      "code" : "plvi-9",
      "display" : "pLVI-9: undetectable/unknown",
      "definition" : "Lymphovascular invasion status not determined or unknown"
    }
  ]
}