Segment

Field

Component

Description

Example

Data Model

MSH

Message header. This conforms to PKB's standard definition.

PID

Patient identification. This conforms to PKB's standard definition.

[ ORC ]

Common order.

[ ORC-3 ]

Filler order number. This will be overridden by OBR-3.1 if present. At least one of either ORC-3.1 or OBR-3.1 must be provided.

ORC-3.1

Filler order number

MYORDER0001

[[Radiology Report.External ID]]

if OBR-3 was not provided

[ ORC-13 ]

Enterer's Location

ORC-13.9

Description

Laboratory 1

[[Radiology Report.Enterer Location]]

OBR

Observation request

[ OBR-3 ]

Filler order number. If present, this will override any value in ORC-3.1. At least one of either ORC-3.1 or OBR-3.1 must be provided.

OBR-3.1

Filler order number

MYORDER0001

[[Radiology Report.External ID]]

[ OBR-4 ]

Universal service identifier.

This is used to set the title of the report. If not provided here then the first provided value from an OBX-3 will be used instead. The message will be rejected if neither OBR-4, nor any OBX-3, contains a name.

See here for more information on code sets.

[ OBR-4.2 ]

Service name

CHEST XRAY

[[Radiology Report.Title]]

[ OBR-4.5 ]

Alternative service name

XRAY (CHEST)

[[Radiology Report.Title]]

if OBR-4.2 was not provided

OBR-7

This is mandatory for radiology reports.

OBR-7.1

Observation timestamp

201505191657

[[Radiology Report.Timestamp]]

[ OBR-16 ]

Ordered by. If present, at least the family name must be given.

[[Radiology Report->Source.Source Text]]

OBR-16.2

Family name

Foster

[ OBR-16.3 ]

Given name

John

[ OBR-16.4 ]

Middle names

Harry

[ OBR-16.6 ]

Title

Dr

[ OBR-25 ]

Result status.

If a value of R is provided: any radiology reports received previously for this report ID will be marked as deleted. OBX segments are not required and will be ignored.

Otherwise: the report is processed as documented.

OBR-25.1

Result status

F

{ [ NTE ] }

NTE segments can be used to include comments.

NTE-3

Comment

NTE-3.1

Comment

This is a comment.

These OBR-level comments are set in

[[Radiology Report.Description]]

{ OBX }

Observation or result

OBX-2

Value type. Radiology messages only support: FT, TX or ED.

OBX-2.1

Value type

ED

OBX-3

Observation identifier. Although both names are individually optional, the message will be rejected if neither OBR-4, nor any OBX-3, contains a name.

See here for more information on code sets.

[ OBX-3.2 ]

Test name

CHEST XRAY

[[Radiology Report.Title]]

if OBR-4 was not provided and this is the first OBX with a name.

In addition,

[[Radiology Report->Attachment.Filename]]

will be set if an attachment is created. If a test name was not provided, then the attachment filename is set to

radiology<timestamp_in_millis>.<lowercase_OBX-5.3>

[ OBX-3.5 ]

Alternative test name

XRAY (CHEST)

[[Radiology Report.Title]]

if OBR-4 was not provided, this is the first OBX with a name, and OBX-3.2 was not provided.

In addition,

[[Radiology Report->Attachment.Filename]]

will be set if an attachment is created and OBX-3.2 was not provided. If a test name was not provided, then the attachment filename is set to

radiology<timestamp_in_millis>.<lowercase_OBX-5.3>

OBX-5

Test result value. Field contents vary based on value type (OBX-2.1).

Currently, we only support TEXT/HTML and IM/* data types for ED values.

[ OBX-5.1 ]

Application (if OBX-2.1 = ED); Value (otherwise)

APP

If the OBX does not contain an image attachment, then this value is appended to

[[Radiology Report.Description]]

[ OBX-5.2 ]

Data type (if OBX-2.1 = ED)

IM

[ OBX-5.3 ]

Sub-data type (if OBX-2.1 = ED)

TIFF

[[Radiology Report->Attachment.Media Type]]

[ OBX-5.4 ]

Encoding (if OBX-2.1 = ED)

Base64

[ OBX-5.5 ]

Value (if OBX-2.1 = ED)

JVi0xLjMKJeTjz ...

For ED data, this value is set in

[[Radiology Report->Attachment.Content]]

after being decoded according to OBX-5.4

OBX-11

Result status. Only values of F and C will be processed. Values of I, O, P or X (which indicate pending or no results) are silently ignored, whilst any other values will cause an error.

OBX-11.1

Result status

F

[ OBX-13 ]

Custom access rules. Currently supported: "{patientDelay:NUMBERdays}" with any whole number in place of "NUMBER" (no spaces). The patient will see that a radiology report has arrived, but the result value will not be revealed until the set number of days past the date/time of observation have passed. If this field is not specified the patient will be able to see their report immediately.

OBX-13.1

Custom access rules

{patientDelay:3days}

{ [ NTE ] }

NTE segments can be used to include comments.

NTE-3

Comment

NTE-3.1

Comment

This is a comment.

Finally, any OBX-level comments are also appended to

[[Radiology Report.Description]]