SKS diagnosis codes

SKS is Denmark’s national coding system. Diagnosis codes use the D prefix and follow the ICD-10 hierarchy with Danish conventions.

See the SKS overview for the full system description, code structure, and supported groups.

Filter by diagnosis codes

Use the is-a operator with "D" on the code property to restrict predictions to diagnosis codes. Because SKS uses a prefix-based hierarchy, is-a: "D" matches the D group itself and all descendant codes (every code starting with D). Request: restrict predictions to SKS diagnosis codes (D group) using is-a:

{
  "system": ["sks"],
  "context": [
    { "type": "text", "text": "Patient indlagt med akut hjerteinsufficiens og type 2-diabetes. Røntgen af højre knæ udført." }
  ],
  "filters": [
    {
      "systemId": "sks",
      "include": {
        "conditions": [
          { "property": "code", "op": "is-a", "value": "D" }
        ]
      }
    }
  ]
}

Response: only D-prefixed diagnosis codes are returned:

{
  "codes": [
    {
      "system": "sks",
      "code": "DI509",
      "display": "Hjertesvigt UNS",
      "evidences": [
        {
          "contextIndex": 0,
          "text": "akut hjerteinsufficiens",
          "start": 20,
          "end": 43
        }
      ]
    },
    {
      "system": "sks",
      "code": "DE119",
      "display": "Type 2-diabetes uden komplikationer",
      "evidences": [
        {
          "contextIndex": 0,
          "text": "type 2-diabetes",
          "start": 47,
          "end": 62
        }
      ]
    }
  ],
  "candidates": [],
  "usageInfo": {
    "creditsConsumed": 1.5
  }
}

API reference → See code filtering for full details on filter properties, operators, and additional examples.

Modifiers on diagnosis codes

Both diagnosis and procedure codes can carry modifiers (see Lateral modifiers for the full list). The official diag.lateral LPR3 code list defines which diagnosis codes must receive a lateral modifier; for example, DC436A (Malignt melanom i hud på skulder) is in the list. TUL7 (side cannot be specified) is a diagnosis-only modifier with no procedure equivalent. On diagnosis codes, TUL3 (bilateral) remains a single code in the response, unlike procedure codes where it is not used.

Code	Display
`DC436A+TUL1`	Melanoma, shoulder, right
`DC436A+TUL2`	Melanoma, shoulder, left
`DC436A+TUL3`	Melanoma, shoulder, bilateral

SKS overview: system description, code structure, lateral modifiers
SKS procedure codes: filter to procedure codes only

Clinical Text Generation

Medical Coding

Clinical Assistant

Filter by diagnosis codes

Modifiers on diagnosis codes

​Filter by diagnosis codes

​Modifiers on diagnosis codes

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Filter by diagnosis codes

Modifiers on diagnosis codes

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