HL7 v2.5.1 Specificationsv2.5.1

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PTH segment

The pathway segment contains the data necessary to add, update, correct, and delete from the record pathways that are utilized to address an individual’s health care. 12.4.4.0 PTH - Field Definitions 12.4.4.1 PTH-1 Action Code (ID) 00816 Definition: This field reveals the intent of the message. Refer to HL7 table 0287 – Problem/goal action code for valid values.

The shape of one line

segmentPTH|PTH-1Action Code|PTH-2Pathway ID|PTH-3Pathway Instance ID|PTH-4Pathway Established…|PTH-5Pathway Life Cycle…|PTH-6Change Pathway Life…

required required in some cases optional

Count the pipes to find a field, and count the empty ones too: an empty field still holds its place. Leave out the separator before PTH-2 and its value arrives as PTH-1, so the receiver stores Pathway ID as Action Code.

This page carries the PTH field table as published and nothing beyond it. The field notes, vendor behaviour, FHIR mapping and parsing guidance that thePID page has are still to be written for PTH.

Every field

SEQLENDTOPTRP/#TBL#ITEM#Element nameCardinality
PTH-12IDR028700816Action Code1..1
250CER01207Pathway ID1..1

PTH-2 is a CE, which holds 6 components separated by carets.

SEQLENDTOPTTBL#Component name
CE.120STOIdentifier
CE.2199STOText
CE.320IDO0396Name of Coding System
CE.420STOAlternate Identifier
CE.5199STOAlternate Text
CE.620IDO0396Name of Alternate Coding System
60EIR01208Pathway Instance ID1..1

PTH-3 is a EI, which holds 4 components separated by carets.

SEQLENDTOPTTBL#Component name
EI.1199STOEntity Identifier
EI.220ISO0363Namespace ID
EI.3199STCUniversal ID
EI.46IDC0301Universal ID Type
26TSR01209Pathway Established Date/Time1..1

PTH-4 is a TS, which holds 2 components separated by carets.

SEQLENDTOPTTBL#Component name
TS.124DTMRTime
TS.21IDB0529Degree of Precision
250CEO01210Pathway Life Cycle Status0..1

PTH-5 is a CE, which holds 6 components separated by carets.

SEQLENDTOPTTBL#Component name
CE.120STOIdentifier
CE.2199STOText
CE.320IDO0396Name of Coding System
CE.420STOAlternate Identifier
CE.5199STOAlternate Text
CE.620IDO0396Name of Alternate Coding System
26TSC01211Change Pathway Life Cycle Status Date/Time0..1

PTH-6 is a TS, which holds 2 components separated by carets.

SEQLENDTOPTTBL#Component name
TS.124DTMRTime
TS.21IDB0529Degree of Precision

Message types carrying PTH

PTH appears in 8 message structures, belonging to 8 message types.