Integrated Campaign Registry (ICR) Implementation Guide - Local Development build (v0.1.0) built by the FHIR (HL7® FHIR® Standard) Build Tools. See the Directory of published versions

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: ICR Spatial Index Scheme - XML Representation

Draft as of 2026-09-06

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<CodeSystem xmlns="http://hl7.org/fhir">
  <id value="icr-spatial-index-cs"/>
  <text>
    <status value="generated"/>
    <div xmlns="http://www.w3.org/1999/xhtml"><p class="res-header-id"><b>Generated Narrative: CodeSystem icr-spatial-index-cs</b></p><a name="icr-spatial-index-cs"> </a><a name="hcicr-spatial-index-cs"> </a><p>This case-sensitive code system <code>https://icr.healthcampaigns.org/CodeSystem/icr-spatial-index-cs</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">quadkey<a name="icr-spatial-index-cs-quadkey"> </a></td><td>Quadkey (XYZ tile key)</td><td>Bing/XYZ tile quadkey: base-4 digits, one per zoom level from 1; the string length is the zoom; every prefix is the containing tile at that shorter zoom.</td></tr><tr><td style="white-space:nowrap">h3<a name="icr-spatial-index-cs-h3"> </a></td><td>H3 cell</td><td>Uber H3 hexagonal cell index (15 hex characters); level = resolution 0–15. Not prefix-hierarchical as a string — join on exact cell.</td></tr><tr><td style="white-space:nowrap">geohash<a name="icr-spatial-index-cs-geohash"> </a></td><td>Geohash</td><td>Base-32 geohash; level = precision (character count); prefixes are containing cells.</td></tr></table></div>
  </text>
  <url
       value="https://icr.healthcampaigns.org/CodeSystem/icr-spatial-index-cs"/>
  <version value="0.1.0"/>
  <name value="ICRSpatialIndexCS"/>
  <title value="ICR Spatial Index Scheme"/>
  <status value="draft"/>
  <experimental value="false"/>
  <date value="2026-09-06T21:01:27+00:00"/>
  <publisher value="UNICEF"/>
  <contact>
    <name value="UNICEF"/>
    <telecom>
      <system value="url"/>
      <value value="https://www.unicef.org"/>
    </telecom>
  </contact>
  <description
               value="The tiling scheme a spatial-index cell belongs to. Each scheme has its own notion of level: quadkey zoom (1–23; the cell string is the zoom-length base-4 tile key, so a prefix is the containing tile at a coarser zoom), H3 resolution (0–15; the cell is the 15-hex-character index), geohash precision (the character count)."/>
  <jurisdiction>
    <coding>
      <system value="http://unstats.un.org/unsd/methods/m49/m49.htm"/>
      <code value="001"/>
      <display value="World"/>
    </coding>
  </jurisdiction>
  <caseSensitive value="true"/>
  <content value="complete"/>
  <count value="3"/>
  <concept>
    <code value="quadkey"/>
    <display value="Quadkey (XYZ tile key)"/>
    <definition
                value="Bing/XYZ tile quadkey: base-4 digits, one per zoom level from 1; the string length is the zoom; every prefix is the containing tile at that shorter zoom."/>
  </concept>
  <concept>
    <code value="h3"/>
    <display value="H3 cell"/>
    <definition
                value="Uber H3 hexagonal cell index (15 hex characters); level = resolution 0–15. Not prefix-hierarchical as a string — join on exact cell."/>
  </concept>
  <concept>
    <code value="geohash"/>
    <display value="Geohash"/>
    <definition
                value="Base-32 geohash; level = precision (character count); prefixes are containing cells."/>
  </concept>
</CodeSystem>