<?xml version="1.0" encoding="UTF-8"?>

<CodeSystem xmlns="http://hl7.org/fhir">
  <id value="snomed-breast-extension"/>
  <language value="en"/>
  <text>
    <status value="generated"/><div xml:lang="en" lang="en"><hr/><p><b>English</b></p><hr/><p class="res-header-id"><b>Generated Narrative: CodeSystem snomed-breast-extension</b></p><a name="snomed-breast-extension"> </a><a name="hcsnomed-breast-extension"> </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/snomed-breast-extension</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">parenchyma-fatty<a name="snomed-breast-extension-parenchyma-fatty"> </a></td><td>Homogeneous adipose tissue</td><td>Ultrasound breast parenchyma structure: homogeneous adipose tissue</td></tr><tr><td style="white-space:nowrap">parenchyma-fibroglandular<a name="snomed-breast-extension-parenchyma-fibroglandular"> </a></td><td>Homogeneous fibroglandular</td><td>Ultrasound breast parenchyma structure: homogeneous fibroglandular tissue</td></tr><tr><td style="white-space:nowrap">parenchyma-heterogeneous<a name="snomed-breast-extension-parenchyma-heterogeneous"> </a></td><td>Heterogeneous</td><td>Ultrasound breast parenchyma structure: heterogeneous tissue</td></tr><tr><td style="white-space:nowrap">ducts-normal<a name="snomed-breast-extension-ducts-normal"> </a></td><td>Ducts not expanded</td><td>Breast duct condition: ducts not expanded (normal)</td></tr><tr><td style="white-space:nowrap">ducts-expanded<a name="snomed-breast-extension-ducts-expanded"> </a></td><td>Ducts expanded</td><td>Breast duct condition: ducts expanded (dilated)</td></tr></table></div>
  </text>
  <url value="https://tx.hl7.lt/fhir/CodeSystem/snomed-breast-extension"/>
  <version value="0.0.1"/>
  <name value="SnomedBreastExtension"/>
  <title value="SNOMED Breast Extension"/>
  <status value="draft"/>
  <experimental value="true"/>
  <date value="2026-03-29T12:06:43+00:00"/>
  <publisher value="Lithuanian Medical Library"/>
  <contact>
    <name value="Lithuanian Medical Library"/>
    <telecom>
      <system value="url"/>
      <value value="https://medicinosnk.lt"/>
    </telecom>
    <telecom>
      <system value="email"/>
      <value value="info@medicinosnk.lt"/>
    </telecom>
  </contact>
  <description value="Extension codes for breast diagnostics concepts not yet available in SNOMED CT. These codes are intended to be replaced by official SNOMED CT codes when they become available."/>
  <jurisdiction>
    <coding>
      <system value="urn:iso:std:iso:3166"/>
      <code value="LT"/>
    </coding>
  </jurisdiction>
  <caseSensitive value="true"/>
  <content value="complete"/>
  <count value="5"/>
  <concept>
    <code value="parenchyma-fatty"/>
    <display value="Homogeneous adipose tissue"/>
    <definition value="Ultrasound breast parenchyma structure: homogeneous adipose tissue"/>
  </concept>
  <concept>
    <code value="parenchyma-fibroglandular"/>
    <display value="Homogeneous fibroglandular"/>
    <definition value="Ultrasound breast parenchyma structure: homogeneous fibroglandular tissue"/>
  </concept>
  <concept>
    <code value="parenchyma-heterogeneous"/>
    <display value="Heterogeneous"/>
    <definition value="Ultrasound breast parenchyma structure: heterogeneous tissue"/>
  </concept>
  <concept>
    <code value="ducts-normal"/>
    <display value="Ducts not expanded"/>
    <definition value="Breast duct condition: ducts not expanded (normal)"/>
  </concept>
  <concept>
    <code value="ducts-expanded"/>
    <display value="Ducts expanded"/>
    <definition value="Breast duct condition: ducts expanded (dilated)"/>
  </concept>
</CodeSystem>