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 - JSON Representation

Draft as of 2026-09-06

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{
  "resourceType" : "CodeSystem",
  "id" : "icr-spatial-index-cs",
  "text" : {
    "status" : "generated",
    "div" : "<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>"
  },
  "url" : "https://icr.healthcampaigns.org/CodeSystem/icr-spatial-index-cs",
  "version" : "0.1.0",
  "name" : "ICRSpatialIndexCS",
  "title" : "ICR Spatial Index Scheme",
  "status" : "draft",
  "experimental" : false,
  "date" : "2026-09-06T21:01:27+00:00",
  "publisher" : "UNICEF",
  "contact" : [
    {
      "name" : "UNICEF",
      "telecom" : [
        {
          "system" : "url",
          "value" : "https://www.unicef.org"
        }
      ]
    }
  ],
  "description" : "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" : "http://unstats.un.org/unsd/methods/m49/m49.htm",
          "code" : "001",
          "display" : "World"
        }
      ]
    }
  ],
  "caseSensitive" : true,
  "content" : "complete",
  "count" : 3,
  "concept" : [
    {
      "code" : "quadkey",
      "display" : "Quadkey (XYZ tile key)",
      "definition" : "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."
    },
    {
      "code" : "h3",
      "display" : "H3 cell",
      "definition" : "Uber H3 hexagonal cell index (15 hex characters); level = resolution 0–15. Not prefix-hierarchical as a string — join on exact cell."
    },
    {
      "code" : "geohash",
      "display" : "Geohash",
      "definition" : "Base-32 geohash; level = precision (character count); prefixes are containing cells."
    }
  ]
}