HL7 v2.5.1 Specificationsv2.5.1

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CTI segment

The CTI segment is an optional segment that contains information to identify the clinical trial, phase and time point with which an order or result is associated. 7.8.4.0 CTI field definitions 7.8.4.1 CTI-1 Sponsor Study ID (EI) 01011 Definition: This field contains the universal identifier for the clinical trial. The coding system is as described in CSR-1-sponsor study ID.

The shape of one line

segmentCTI|CTI-1Sponsor Study ID|CTI-2Study Phase Identifier|CTI-3Study Scheduled Time…

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 CTI-2 and its value arrives as CTI-1, so the receiver stores Study Phase Identifier as Sponsor Study ID.

This page carries the CTI 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 CTI.

Every field

SEQLENDTOPTRP/#TBL#ITEM#Element nameCardinality
60EIR01011Sponsor Study ID1..1

CTI-1 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
250CEC01022Study Phase Identifier0..1

CTI-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
250CEO01055Study Scheduled Time Point0..1

CTI-3 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

Message types carrying CTI

CTI appears in 16 message structures, belonging to 11 message types.