REL - Clinical Relationship Segment

The Clinical Relationship segment contains the data necessary to relate two data elements within and/or external to the message at run-time. It also includes information about the relationship.

Relationships are constrained to being between explicit segments of messages rather than beween the identities of entities they reference. Segments are available within the message but related persistent information may not be. Because of the transient nature of messages applications must manage the associations with entities which persist outside or across messages.

Examples:

• Problem is a consequence of a diagnosis.

• Diagnosis is supported by observation.

• Observation is a manifestation of a diagnosis.

• Complication is a consequence of a procedure.

HL7 Attribute Table - REL - Clinical Relationship Segment

Seq#	Data Element Name	DataType	Usage	Vocabulary	Cardinality	Item #	Length	C.LEN	Flags
REL
1	Set ID –REL	SI	C		[0..1]	02240	[1..4]
2	Relationship Type	CWE	R	0948(S) Relationship Type(Suggested)	[1..1]	02241
3	This Relationship Instance Identifier	EI	R		[1..1]	02242
4	Source Information Instance Identifier	EI	R		[1..1]	02243
5	Target Information Instance Identifier	EI	R		[1..1]	02244
6	Asserting Entity Instance ID	EI	O		[0..1]	02245
7	Asserting Person	XCN	O		[0..1]	02246
8	Asserting Organization	XON	O		[0..1]	02247
9	Assertor Address	XAD	O		[0..1]	02248
10	Assertor Contact	XTN	O		[0..1]	02249
11	Assertion Date Range	DR	O		[0..1]	02250
12	Negation Indicator	ID	O	0136(R) Yes/no Indicator(Required)	[0..1]	02251	[1..1]
13	Certainty of Relationship	CWE	O		[0..1]	02252
14	Priority No	NM	O		[0..1]	02253		5	#
15	Priority Sequence No	NM	O		[0..1]	02254		5	#
16	Separability Indicator	ID	O	0136(R) Yes/no Indicator(Required)	[0..1]	02255	[1..1]
17	Source Information Instance Object Type	ID	O	0203(S) Identifier Type(Suggested)	[0..1]	02455
18	Target Information Instance Object Type	ID	O	0203(S) Identifier Type(Suggested)	[0..1]	02456

REL-1: Set ID –REL (SI) 02240

Definition: This field contains the Set ID of the specific relationship Record.

REL-2: Relationship Type (CWE) 02241

Definition: This field contains the type of the relationship. Refer to User-defined Table 0948 – Relationship Type, as defined in Chapter 2C, Code Tables for suggested values.

REL-3: This Relationship Instance Identifier (EI) 02242

Definition: This field contains the instance identifier of this relationship.

REL-4: Source Information Instance Identifier (EI) 02243

Definition: This field contains the Instance ID of the Source Segment.

REL-5: Target Information Instance Identifier (EI) 02244

Definition: This field contains the Instance ID of the Target Segment.

REL-6: Asserting Entity Instance ID (EI) 02245

Definition: This field contains the Instance ID of the Person or Organization that asserted the relationship.

REL-7: Asserting Person (XCN) 02246

Definition: This field contains the Identifier details of the Person who asserted the relationship.

REL-8: Asserting Organization (XON) 02247

Definition: This field contains the Identifier details of the Organization that asserted the relationship.

REL-9: Assertor Address (XAD) 02248

Definition: This field contains the address of the Person or Organization that asserted the relationship.

REL-10: Assertor Contact (XTN) 02249

Definition: This field contains the address of the Person or Organization that asserted the relationship.

REL-11: Assertion Date Range (DR) 02250

Definition: This field contains the date range during which assertion of the relationship took place.

REL-12: Negation Indicator (ID) 02251

Definition: This field asserts the absence of the relationship for this particular REL segment. This field, if populated and set a value of 'Y', indicates that the given relationship does not exist.

REL-13: Certainty of Relationship (CWE) 02252

Definition: This field contains the certainty of existence of the relationship.

NOTE that there are no suggested values for this coded element.

REL-14: Priority No (NM) 02253

Definition: This field contains the priority number as used, for example, in relative ordering, plans, and workflows.

REL-15: Priority Sequence No (NM) 02254

Definition: This field contains the priority sequence number as used, for example, in relative preference for consideration.

REL-16: Separability Indicator (ID) 02255

Definition: This field indicates whether source and target can be interpreted independently. Refer to HL7 Table 0136 – Yes/no Indicator, as defined in Chapter 2C, Code Tables.

REL-17: Source Information Instance Object Type (ID) 02455

Definition: This field contains the identifier type code drawn from coding system HL70203 describing the object identifed by the Source Information Instance Identifier (REL-4).

REL-18: Target Information Instance Object Type (ID) 02456

Definition: This field contains the identifier type code drawn from coding system HL70203 describing the object identifed by the Target Information Instance Identifier (REL-5).