HL7 v2.3.1 Vocabulary
0.1.0 - ci-build

HL7 v2.3.1 Vocabulary, published by HL7/FO. This guide is not an authorized publication; it is the continuous build for version 0.1.0 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/frankoemig/hl7.v2.terminology.v231/ and changes regularly. See the Directory of published versions

## : Occurrence Code (2.3.1 - 1.0.0) - JSON Representation

Active as of 2026-01-27

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    {
      "resourceType" : "CodeSystem",
      "id" : "nubc-OccurrenceCode-cs",
      "text" : {
        "status" : "generated",
        "div" : "<div xmlns=\"http://www.w3.org/1999/xhtml\"><ul><li>Include all codes defined in <a href=\"CodeSystem-nubc-OccurrenceCode-cs.html\"><code>http://terminology.hl7.org/v2plusvocab/CodeSystem/nubc-OccurrenceCode-cs</code></a></li></ul></div>"
      },
      "extension" : [
        {
          "url" : "http://terminology.hl7.org/v2plusvocab/StructureDefinition/codesystem-v2versionCreated",
          "valueString" : "2.3.1"
        },
        {
          "url" : "http://terminology.hl7.org/v2plusvocab/StructureDefinition/codesystem-versionHistory",
          "valueString" : "generate correct history somehow"
        },
        {
          "url" : "http://terminology.hl7.org/v2plusvocab/StructureDefinition/codesystem-tableNo",
          "valueString" : "0350"
        }
      ],
      "url" : "http://terminology.hl7.org/v2plusvocab/CodeSystem/nubc-OccurrenceCode-cs",
      "identifier" : [
        {
          "system" : "urn:ietf:rfc:3986",
          "value" : "urn:oid:2.16.840.1.113883.6.301.7"
        }
      ],
      "version" : "1.0.0",
      "name" : "Nubc-OccurrenceCode-cs",
      "title" : "Occurrence Code (2.3.1 - 1.0.0)",
      "status" : "active",
      "experimental" : true,
      "date" : "2026-01-27T19:22:40+00:00",
      "publisher" : "HL7/FO",
      "contact" : [
        {
          "name" : "HL7/FO",
          "telecom" : [
            {
              "system" : "url",
              "value" : "http://www.hl7.org"
            }
          ]
        }
      ],
      "description" : "National Uniform Billing Committee (NUBC) UB-04 Data Specifications Manual, UB form locator 31 - 34, Occurrence Codes and Amounts - code and associated date defining a significant event relating to the bill that may affect payer processing the claim. The UB-04 Data Specifications Manual with the codes is available by subscription from NUBC at http://www.nubc.org/become.html.  Used in HL7 Version 2.x messaging in the OCD segment. Updated by NUBC annually; see the coding instructions for more detail.",
      "copyright" : "HL7 Inc., 2026",
      "caseSensitive" : true,
      "compositional" : false,
      "content" : "complete",
      "property" : [
        {
          "code" : "versionIntroduced",
          "uri" : "http://terminology.hl7.org/v2plusvocab/CodeSystem/Property#versionIntroduced",
          "description" : "version when was this code introduced",
          "type" : "string"
        },
        {
          "code" : "versionDeprecated",
          "uri" : "http://terminology.hl7.org/v2plusvocab/CodeSystem/Property#versionDeprecated",
          "description" : "version when was this code deprecated",
          "type" : "string"
        },
        {
          "code" : "status",
          "uri" : "http://hl7.org/fhir/concept-properties#status",
          "description" : "A code that indicates the status of the concept. Typical values are active, experimental, deprecated, and retired",
          "type" : "code"
        },
        {
          "code" : "comment",
          "uri" : "http://terminology.hl7.org/v2plusvocab/CodeSystem/Property#comment",
          "description" : "A string that provides additional detail pertinent to the use or understanding of the concept",
          "type" : "string"
        },
        {
          "code" : "usage",
          "uri" : "http://terminology.hl7.org/v2plusvocab/CodeSystem/Property#usage",
          "description" : "usage notes for this code",
          "type" : "string"
        },
        {
          "code" : "modified",
          "uri" : "http://terminology.hl7.org/v2plusvocab/CodeSystem/Property#modified",
          "description" : "date of last modification",
          "type" : "dateTime"
        }
      ],
      "concept" : [
        {
          "code" : "01",
          "display" : "Auto accident",
          "definition" : "Auto accident",
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.3.1"
            }
          ]
        },
        {
          "code" : "02",
          "display" : "No fault insurance involved-including auto accident/other",
          "definition" : "No fault insurance involved-including auto accident/other",
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.3.1"
            }
          ]
        },
        {
          "code" : "03",
          "display" : "Accident/tort liability",
          "definition" : "Accident/tort liability",
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.3.1"
            }
          ]
        },
        {
          "code" : "04",
          "display" : "Accident/employment related",
          "definition" : "Accident/employment related",
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.3.1"
            }
          ]
        },
        {
          "code" : "05",
          "display" : "Other accident",
          "definition" : "Other accident",
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.3.1"
            }
          ]
        },
        {
          "code" : "06",
          "display" : "Crime victim",
          "definition" : "Crime victim",
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.3.1"
            }
          ]
        },
        {
          "code" : "09",
          "display" : "Start of infertility treatment cycle",
          "definition" : "Start of infertility treatment cycle",
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.3.1"
            }
          ]
        },
        {
          "code" : "10",
          "display" : "Last menstrual period",
          "definition" : "Last menstrual period",
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.3.1"
            }
          ]
        },
        {
          "code" : "11",
          "display" : "Onset of symptoms/illness",
          "definition" : "Onset of symptoms/illness",
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.3.1"
            }
          ]
        },
        {
          "code" : "12",
          "display" : "Date of onset for a chronically dependent individual",
          "definition" : "Date of onset for a chronically dependent individual",
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.3.1"
            }
          ]
        },
        {
          "code" : "17",
          "display" : "Date outpatient occupational therapy plan established or last reviewed",
          "definition" : "Date outpatient occupational therapy plan established or last reviewed",
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.3.1"
            }
          ]
        },
        {
          "code" : "18",
          "display" : "Date of retirement patient/beneficiary",
          "definition" : "Date of retirement patient/beneficiary",
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.3.1"
            }
          ]
        },
        {
          "code" : "19",
          "display" : "Date of retirement spouse",
          "definition" : "Date of retirement spouse",
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.3.1"
            }
          ]
        },
        {
          "code" : "20",
          "display" : "Guarantee of payment began",
          "definition" : "Guarantee of payment began",
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.3.1"
            }
          ]
        },
        {
          "code" : "21",
          "display" : "UR notice received",
          "definition" : "UR notice received",
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.3.1"
            }
          ]
        },
        {
          "code" : "22",
          "display" : "Date active care ended",
          "definition" : "Date active care ended",
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.3.1"
            }
          ]
        },
        {
          "code" : "24",
          "display" : "Date insurance denied",
          "definition" : "Date insurance denied",
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.3.1"
            }
          ]
        },
        {
          "code" : "25",
          "display" : "Date benefits terminated by primary payor",
          "definition" : "Date benefits terminated by primary payor",
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.3.1"
            }
          ]
        },
        {
          "code" : "26",
          "display" : "Date SNF bed available",
          "definition" : "Date SNF bed available",
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.3.1"
            }
          ]
        },
        {
          "code" : "27",
          "display" : "Date home health plan established",
          "definition" : "Date home health plan established",
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.3.1"
            }
          ]
        },
        {
          "code" : "28",
          "display" : "Spouse's date of birth",
          "definition" : "Spouse's date of birth",
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.3.1"
            }
          ]
        },
        {
          "code" : "29",
          "display" : "Date outpatient physical therapy plan established or last reviewed",
          "definition" : "Date outpatient physical therapy plan established or last reviewed",
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.3.1"
            }
          ]
        },
        {
          "code" : "30",
          "display" : "Date outpatient speech pathology plan established or last reviewed",
          "definition" : "Date outpatient speech pathology plan established or last reviewed",
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.3.1"
            }
          ]
        },
        {
          "code" : "31",
          "display" : "Date beneficiary notified of intent to bill (accommodations)",
          "definition" : "Date beneficiary notified of intent to bill (accommodations)",
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.3.1"
            }
          ]
        },
        {
          "code" : "32",
          "display" : "Date beneficiary notified of intent to bill (procedures or treatments)",
          "definition" : "Date beneficiary notified of intent to bill (procedures or treatments)",
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.3.1"
            }
          ]
        },
        {
          "code" : "33",
          "display" : "First day of the Medicare coordination period for ESRD beneficiaries covered by EGHP",
          "definition" : "First day of the Medicare coordination period for ESRD beneficiaries covered by EGHP",
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.3.1"
            }
          ]
        },
        {
          "code" : "34",
          "display" : "Date of election of extended care facilities",
          "definition" : "Date of election of extended care facilities",
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.3.1"
            }
          ]
        },
        {
          "code" : "35",
          "display" : "Date treatment started for P.T.",
          "definition" : "Date treatment started for P.T.",
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.3.1"
            }
          ]
        },
        {
          "code" : "36",
          "display" : "Date of inpatient hospital discharge for covered transplant patients",
          "definition" : "Date of inpatient hospital discharge for covered transplant patients",
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.3.1"
            }
          ]
        },
        {
          "code" : "37",
          "display" : "Date of inpatient hospital discharge for non-covered transplant patient",
          "definition" : "Date of inpatient hospital discharge for non-covered transplant patient",
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.3.1"
            }
          ]
        },
        {
          "code" : "40",
          "display" : "Scheduled date of admission",
          "definition" : "Scheduled date of admission",
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.3.1"
            }
          ]
        },
        {
          "code" : "41",
          "display" : "Date of first test for pre-admission testing",
          "definition" : "Date of first test for pre-admission testing",
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.3.1"
            }
          ]
        },
        {
          "code" : "42",
          "display" : "Date of discharge",
          "definition" : "Date of discharge",
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.3.1"
            }
          ]
        },
        {
          "code" : "43",
          "display" : "Scheduled date of canceled surgery",
          "definition" : "Scheduled date of canceled surgery",
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.3.1"
            }
          ]
        },
        {
          "code" : "44",
          "display" : "Date treatment started for O.T.",
          "definition" : "Date treatment started for O.T.",
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.3.1"
            }
          ]
        },
        {
          "code" : "45",
          "display" : "Date treatment started for S.T.",
          "definition" : "Date treatment started for S.T.",
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.3.1"
            }
          ]
        },
        {
          "code" : "46",
          "display" : "Date treatment started for cardiac rehab.",
          "definition" : "Date treatment started for cardiac rehab.",
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.3.1"
            }
          ]
        },
        {
          "code" : "47",
          "display" : "Payer codes",
          "definition" : "Payer codes",
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.3.1"
            }
          ]
        },
        {
          "code" : "48",
          "display" : "Payer codes",
          "definition" : "Payer codes",
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.3.1"
            }
          ]
        },
        {
          "code" : "49",
          "display" : "Payer codes",
          "definition" : "Payer codes",
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.3.1"
            }
          ]
        },
        {
          "code" : "50",
          "display" : "Date lien released",
          "definition" : "Date lien released",
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.3.1"
            }
          ]
        },
        {
          "code" : "51",
          "display" : "Date treatment started for psychiatric care",
          "definition" : "Date treatment started for psychiatric care",
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.3.1"
            }
          ]
        },
        {
          "code" : "70",
          "display" : "Occurrence span codes and dates",
          "definition" : "Occurrence span codes and dates",
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.3.1"
            }
          ]
        },
        {
          "code" : "71",
          "display" : "Occurrence span codes and dates",
          "definition" : "Occurrence span codes and dates",
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.3.1"
            }
          ]
        },
        {
          "code" : "72",
          "display" : "Occurrence span codes and dates",
          "definition" : "Occurrence span codes and dates",
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.3.1"
            }
          ]
        },
        {
          "code" : "73",
          "display" : "Occurrence span codes and dates",
          "definition" : "Occurrence span codes and dates",
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.3.1"
            }
          ]
        },
        {
          "code" : "74",
          "display" : "Occurrence span codes and dates",
          "definition" : "Occurrence span codes and dates",
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.3.1"
            }
          ]
        },
        {
          "code" : "75",
          "display" : "Occurrence span codes and dates",
          "definition" : "Occurrence span codes and dates",
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.3.1"
            }
          ]
        },
        {
          "code" : "76",
          "display" : "Occurrence span codes and dates",
          "definition" : "Occurrence span codes and dates",
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.3.1"
            }
          ]
        },
        {
          "code" : "77",
          "display" : "Occurrence span codes and dates",
          "definition" : "Occurrence span codes and dates",
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.3.1"
            }
          ]
        },
        {
          "code" : "78",
          "display" : "Occurrence span codes and dates",
          "definition" : "Occurrence span codes and dates",
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.3.1"
            }
          ]
        },
        {
          "code" : "79",
          "display" : "Occurrence span codes and dates",
          "definition" : "Occurrence span codes and dates",
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.3.1"
            }
          ]
        },
        {
          "code" : "80",
          "display" : "Occurrence span codes and dates",
          "definition" : "Occurrence span codes and dates",
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.3.1"
            }
          ]
        },
        {
          "code" : "81",
          "display" : "Occurrence span codes and dates",
          "definition" : "Occurrence span codes and dates",
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.3.1"
            }
          ]
        },
        {
          "code" : "82",
          "display" : "Occurrence span codes and dates",
          "definition" : "Occurrence span codes and dates",
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.3.1"
            }
          ]
        },
        {
          "code" : "83",
          "display" : "Occurrence span codes and dates",
          "definition" : "Occurrence span codes and dates",
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.3.1"
            }
          ]
        },
        {
          "code" : "84",
          "display" : "Occurrence span codes and dates",
          "definition" : "Occurrence span codes and dates",
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.3.1"
            }
          ]
        },
        {
          "code" : "85",
          "display" : "Occurrence span codes and dates",
          "definition" : "Occurrence span codes and dates",
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.3.1"
            }
          ]
        },
        {
          "code" : "86",
          "display" : "Occurrence span codes and dates",
          "definition" : "Occurrence span codes and dates",
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.3.1"
            }
          ]
        },
        {
          "code" : "87",
          "display" : "Occurrence span codes and dates",
          "definition" : "Occurrence span codes and dates",
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.3.1"
            }
          ]
        },
        {
          "code" : "88",
          "display" : "Occurrence span codes and dates",
          "definition" : "Occurrence span codes and dates",
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.3.1"
            }
          ]
        },
        {
          "code" : "89",
          "display" : "Occurrence span codes and dates",
          "definition" : "Occurrence span codes and dates",
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.3.1"
            }
          ]
        },
        {
          "code" : "90",
          "display" : "Occurrence span codes and dates",
          "definition" : "Occurrence span codes and dates",
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.3.1"
            }
          ]
        },
        {
          "code" : "91",
          "display" : "Occurrence span codes and dates",
          "definition" : "Occurrence span codes and dates",
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.3.1"
            }
          ]
        },
        {
          "code" : "92",
          "display" : "Occurrence span codes and dates",
          "definition" : "Occurrence span codes and dates",
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.3.1"
            }
          ]
        },
        {
          "code" : "93",
          "display" : "Occurrence span codes and dates",
          "definition" : "Occurrence span codes and dates",
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.3.1"
            }
          ]
        },
        {
          "code" : "94",
          "display" : "Occurrence span codes and dates",
          "definition" : "Occurrence span codes and dates",
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.3.1"
            }
          ]
        },
        {
          "code" : "95",
          "display" : "Occurrence span codes and dates",
          "definition" : "Occurrence span codes and dates",
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.3.1"
            }
          ]
        },
        {
          "code" : "96",
          "display" : "Occurrence span codes and dates",
          "definition" : "Occurrence span codes and dates",
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.3.1"
            }
          ]
        },
        {
          "code" : "97",
          "display" : "Occurrence span codes and dates",
          "definition" : "Occurrence span codes and dates",
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.3.1"
            }
          ]
        },
        {
          "code" : "98",
          "display" : "Occurrence span codes and dates",
          "definition" : "Occurrence span codes and dates",
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.3.1"
            }
          ]
        },
        {
          "code" : "99",
          "display" : "Occurrence span codes and dates",
          "definition" : "Occurrence span codes and dates",
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.3.1"
            }
          ]
        },
        {
          "code" : "A1",
          "display" : "Birthdate - insured A",
          "definition" : "Birthdate - insured A",
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.3.1"
            }
          ]
        },
        {
          "code" : "A2",
          "display" : "Effective date - insured A policy",
          "definition" : "Effective date - insured A policy",
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.3.1"
            }
          ]
        },
        {
          "code" : "A3",
          "display" : "Benefits exhausted payer A",
          "definition" : "Benefits exhausted payer A",
          "property" : [
            {
              "code" : "versionIntroduced",
              "valueString" : "2.3.1"
            }
          ]
        }
      ]
    }