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

## CodeSystem: Occurrence Code (2.3.1 - 1.0.0) (Experimental)

Official URL: http://terminology.hl7.org/v2plusvocab/CodeSystem/nubc-OccurrenceCode-cs | Version: 1.0.0
Active as of 2026-01-27 | Computable Name: Nubc-OccurrenceCode-cs
Other Identifiers: OID:2.16.840.1.113883.6.301.7
Copyright/Legal: HL7 Inc., 2026

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.

This Code system is referenced in the content logical definition of the following value sets:

- Hl7VSoccurrenceCode

Properties

This code system defines the following properties for its concepts

Name | Code | URI | Type | Description
versionIntroduced | versionIntroduced | http://terminology.hl7.org/v2plusvocab/CodeSystem/Property#versionIntroduced | string | version when was this code introduced
versionDeprecated | versionDeprecated | http://terminology.hl7.org/v2plusvocab/CodeSystem/Property#versionDeprecated | string | version when was this code deprecated
status | status | http://hl7.org/fhir/concept-properties#status | code | A code that indicates the status of the concept. Typical values are active, experimental, deprecated, and retired
comment | comment | http://terminology.hl7.org/v2plusvocab/CodeSystem/Property#comment | string | A string that provides additional detail pertinent to the use or understanding of the concept
usage | usage | http://terminology.hl7.org/v2plusvocab/CodeSystem/Property#usage | string | usage notes for this code
modified | modified | http://terminology.hl7.org/v2plusvocab/CodeSystem/Property#modified | dateTime | date of last modification

Concepts

This case-sensitive code system `http://terminology.hl7.org/v2plusvocab/CodeSystem/nubc-OccurrenceCode-cs` defines the following codes:

Code | Display | Definition | versionIntroduced
01 | Auto accident | Auto accident | 2.3.1
02 | No fault insurance involved-including auto accident/other | No fault insurance involved-including auto accident/other | 2.3.1
03 | Accident/tort liability | Accident/tort liability | 2.3.1
04 | Accident/employment related | Accident/employment related | 2.3.1
05 | Other accident | Other accident | 2.3.1
06 | Crime victim | Crime victim | 2.3.1
09 | Start of infertility treatment cycle | Start of infertility treatment cycle | 2.3.1
10 | Last menstrual period | Last menstrual period | 2.3.1
11 | Onset of symptoms/illness | Onset of symptoms/illness | 2.3.1
12 | Date of onset for a chronically dependent individual | Date of onset for a chronically dependent individual | 2.3.1
17 | Date outpatient occupational therapy plan established or last reviewed | Date outpatient occupational therapy plan established or last reviewed | 2.3.1
18 | Date of retirement patient/beneficiary | Date of retirement patient/beneficiary | 2.3.1
19 | Date of retirement spouse | Date of retirement spouse | 2.3.1
20 | Guarantee of payment began | Guarantee of payment began | 2.3.1
21 | UR notice received | UR notice received | 2.3.1
22 | Date active care ended | Date active care ended | 2.3.1
24 | Date insurance denied | Date insurance denied | 2.3.1
25 | Date benefits terminated by primary payor | Date benefits terminated by primary payor | 2.3.1
26 | Date SNF bed available | Date SNF bed available | 2.3.1
27 | Date home health plan established | Date home health plan established | 2.3.1
28 | Spouse's date of birth | Spouse's date of birth | 2.3.1
29 | Date outpatient physical therapy plan established or last reviewed | Date outpatient physical therapy plan established or last reviewed | 2.3.1
30 | Date outpatient speech pathology plan established or last reviewed | Date outpatient speech pathology plan established or last reviewed | 2.3.1
31 | Date beneficiary notified of intent to bill (accommodations) | Date beneficiary notified of intent to bill (accommodations) | 2.3.1
32 | Date beneficiary notified of intent to bill (procedures or treatments) | Date beneficiary notified of intent to bill (procedures or treatments) | 2.3.1
33 | First day of the Medicare coordination period for ESRD beneficiaries covered by EGHP | First day of the Medicare coordination period for ESRD beneficiaries covered by EGHP | 2.3.1
34 | Date of election of extended care facilities | Date of election of extended care facilities | 2.3.1
35 | Date treatment started for P.T. | Date treatment started for P.T. | 2.3.1
36 | Date of inpatient hospital discharge for covered transplant patients | Date of inpatient hospital discharge for covered transplant patients | 2.3.1
37 | Date of inpatient hospital discharge for non-covered transplant patient | Date of inpatient hospital discharge for non-covered transplant patient | 2.3.1
40 | Scheduled date of admission | Scheduled date of admission | 2.3.1
41 | Date of first test for pre-admission testing | Date of first test for pre-admission testing | 2.3.1
42 | Date of discharge | Date of discharge | 2.3.1
43 | Scheduled date of canceled surgery | Scheduled date of canceled surgery | 2.3.1
44 | Date treatment started for O.T. | Date treatment started for O.T. | 2.3.1
45 | Date treatment started for S.T. | Date treatment started for S.T. | 2.3.1
46 | Date treatment started for cardiac rehab. | Date treatment started for cardiac rehab. | 2.3.1
47 | Payer codes | Payer codes | 2.3.1
48 | Payer codes | Payer codes | 2.3.1
49 | Payer codes | Payer codes | 2.3.1
50 | Date lien released | Date lien released | 2.3.1
51 | Date treatment started for psychiatric care | Date treatment started for psychiatric care | 2.3.1
70 | Occurrence span codes and dates | Occurrence span codes and dates | 2.3.1
71 | Occurrence span codes and dates | Occurrence span codes and dates | 2.3.1
72 | Occurrence span codes and dates | Occurrence span codes and dates | 2.3.1
73 | Occurrence span codes and dates | Occurrence span codes and dates | 2.3.1
74 | Occurrence span codes and dates | Occurrence span codes and dates | 2.3.1
75 | Occurrence span codes and dates | Occurrence span codes and dates | 2.3.1
76 | Occurrence span codes and dates | Occurrence span codes and dates | 2.3.1
77 | Occurrence span codes and dates | Occurrence span codes and dates | 2.3.1
78 | Occurrence span codes and dates | Occurrence span codes and dates | 2.3.1
79 | Occurrence span codes and dates | Occurrence span codes and dates | 2.3.1
80 | Occurrence span codes and dates | Occurrence span codes and dates | 2.3.1
81 | Occurrence span codes and dates | Occurrence span codes and dates | 2.3.1
82 | Occurrence span codes and dates | Occurrence span codes and dates | 2.3.1
83 | Occurrence span codes and dates | Occurrence span codes and dates | 2.3.1
84 | Occurrence span codes and dates | Occurrence span codes and dates | 2.3.1
85 | Occurrence span codes and dates | Occurrence span codes and dates | 2.3.1
86 | Occurrence span codes and dates | Occurrence span codes and dates | 2.3.1
87 | Occurrence span codes and dates | Occurrence span codes and dates | 2.3.1
88 | Occurrence span codes and dates | Occurrence span codes and dates | 2.3.1
89 | Occurrence span codes and dates | Occurrence span codes and dates | 2.3.1
90 | Occurrence span codes and dates | Occurrence span codes and dates | 2.3.1
91 | Occurrence span codes and dates | Occurrence span codes and dates | 2.3.1
92 | Occurrence span codes and dates | Occurrence span codes and dates | 2.3.1
93 | Occurrence span codes and dates | Occurrence span codes and dates | 2.3.1
94 | Occurrence span codes and dates | Occurrence span codes and dates | 2.3.1
95 | Occurrence span codes and dates | Occurrence span codes and dates | 2.3.1
96 | Occurrence span codes and dates | Occurrence span codes and dates | 2.3.1
97 | Occurrence span codes and dates | Occurrence span codes and dates | 2.3.1
98 | Occurrence span codes and dates | Occurrence span codes and dates | 2.3.1
99 | Occurrence span codes and dates | Occurrence span codes and dates | 2.3.1
A1 | Birthdate - insured A | Birthdate - insured A | 2.3.1
A2 | Effective date - insured A policy | Effective date - insured A policy | 2.3.1
A3 | Benefits exhausted payer A | Benefits exhausted payer A | 2.3.1