OH3 - Usual Work Segment

The OH3 segment contains information about the occupation which the subject has held for the longest duration through his or her working history, at the point in time the statement is recorded. Longest-held occupations can be associated with conditions that develop slowly over time or even after the person is no longer performing that type of work, e.g., some respiratory conditions and cancers. It optionally includes a total duration observation, because a person can be in and out of a given occupation over time. In addition, knowing when the person began working in this occupation can provide information about potential exposures and allows the clinician to assess whether sufficient time has elapsed for a chronic condition to appear, i.e. the latency period. This guides appropriate use of screening tests to detect early disease. This segment may be related to either patient or to the Next of Kin.

Examples:

A person/patient may have worked as a waiter for 3 years, and worked as a nurse for 20 years. The Usual Work would reflect an occupation of nurse as the longest held occupation.

The intent is for the segment to be allowed to repeat within a message definition to enable communication of Usual Work for multiple family members, but not the patient. For instance, the Usual Work segment may be repeated in multiple Next of Kin groups in order to allow for inclusion of mother, father, or other related persons, but not more than one usual job is permitted for one person.

HL7 Attribute Table - OH3 - Usual Work segment

Seq#	Data Element Name	DataType	Usage	Vocabulary	Cardinality	Item #	Length	C.LEN	Flags
OH3
1	Set ID	SI	R		[1..1]	03535
2	Action Code	ID	O	0206(R) Segment Action Code(Required)	[0..1]	00816	[2..2]
3	Occupation	CWE	R	0958	[1..1]	03537
4	Industry	CWE	R	0955	[1..1]	03538
5	Usual Occupation Duration (years)	NM	O		[0..1]	03539
6	Start year	DT	O		[0..1]	03540
7	Entered Date	DT	O		[0..1]	03542
8	Work Unique Identifier	EI	O		[0..1]	02446

OH3-1: Set ID (SI) 03535

Definition: This field contains the sequence number used to identify the OH3 segment instances in message structures where the OH3 segment repeats. For the first occurrence of the segment, the sequence number shall be one, for the second occurrence, the sequence number shall be two, etc. If the subject of the OH3 segment changes (e.g. Patient vs Next of Kin) the Set ID sequence will be reset.

OH3-2: Action Code (ID) 00816

Definition: This field contains a code defining the action to be taken for this segment. It allows this segment to be sent to delete or update, for example, previously sent information. Refer to HL7 Table 0206 – Segment Action Code in Chapter 2C, Code Tables, for valid values.

OH3-3: Occupation (CWE) 03537

Definition: This field contains a code defining the occupation a person has held for the longest time during his or her life, regardless of the occupation currently held and regardless of whether or not it has been continuous time. Refer to HL7 Table 0958 – Occupation Code in Chapter 2C, Code Tables, for suggested values. In the US, this field should use the Occupation CDC Census 2010 codes published at https://phinvads.cdc.gov/vads/ViewValueSet.action?oid=2.16.840.1.114222.4.11.7186

OH3-4: Industry (CWE) 03538

Definition: This field contains a code defining the industry a person has worked in for the longest time while in the usual occupation. Refer to HL7 Table 0955 – Industry Code in Chapter 2C, Code Tables, for suggested values. In the US, this field should use the Industry CDC Census 2010 codes published at https://phinvads.cdc.gov/vads/ViewValueSet.action?oid=2.16.840.1.114222.4.11.7187

OH3-5: Usual Occupation Duration (years) (NM) 03539

Definition: This field asserts the number of years that the person has been working in the usual occupation. Decimals shall be used to indicate a duration shorter than 1 year.

OH3-6: Start year (DT) 03540

Definition: This field identifies the year that the person began work in their usual occupation.

OH3-7: Entered Date (DT) 03542

Definition: This field records the date that the information was entered into the patient record.

OH3-8: Work Unique Identifier (EI) 02446

Definition: This field contains a value the uniquely identifies a single work for a person.