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3.3.8 MRG - merge patient information segment

The MRG segment provides receiving applications with information necessary to initiate the merging of patient data as well as groups of records. It is intended that this segment be used throughout the standard to allow the merging of registration, accounting, and clinical records within specific applications.

Figure 3-8. MRG attributes

SEQ

LEN

DT

OPT

RP/#

TBL#

ITEM#

ELEMENT NAME

1

20

CX

R

Y


00211

Prior Patient ID - Internal

2

16

CX

O

Y


00212

Prior Alternate Patient ID

3

20

CX

O



00213

Prior Patient Account Number

4

16

CX

O



00214

Prior Patient ID - External

5

15

CX

O



01279

Prior Visit Number

6

20

CX

O



01280

Prior Alternate Visit ID

7

48

XPN

O



01281

Prior Patient Name

3.3.8.0 MRG field definitions

3.3.8.1 Prior patient ID - internal (CX) 00211

Components: <ID (ST)> ^ <check digit (ST)> ^ <code identifying the check digit scheme employed (ID)> ^ <assigning authority (HD)> ^ <identifier type code (IS)> ^ <assigning facility (HD)>

Subcomponents of assigning authority: <namespace ID (IS)> & <universal ID (ST)> & <universal ID type (ID)>

Subcomponents of assigning facility: <namespace ID (IS)> & <universal ID (ST)> & <universal ID type (ID)>

Definition: This field contains the internal prior patient identifier. This field contains a list of potential "old" numbers to match. Only one old number can be merged with one new number in a transaction. When merging patient IDs (A34 and A36), the patient ID contained in the PID segment cannot repeat. Refer to HL7 table 0061 - Check digit scheme as defined in Chapter 2.

3.3.8.2 Prior alternate patient ID (CX) 00212

Components: <ID (ST)> ^ <check digit (ST)> ^ <code identifying the check digit scheme employed (ID)> ^ <assigning authority (HD)> ^ <identifier type code (IS)> ^ <assigning facility (HD)>

Subcomponents of assigning authority: <namespace ID (IS)> & <universal ID (ST)> & <universal ID type (ID)>

Subcomponents of assigning facility: <namespace ID (IS)> & <universal ID (ST)> & <universal ID type (ID)>

Definition: This field contains the prior alternate patient identifier. Refer to HL7 table 0061 - Check digit scheme as defined in Chapter 2.

3.3.8.3 Prior patient account number (CX) 00213

Components: <ID (ST)> ^ <check digit (ST)> ^ <code identifying the check digit scheme employed (ID)> ^ <assigning authority (HD)> ^ <identifier type code (IS)> ^ <assigning facility (HD)>

Subcomponents of assigning authority: <namespace ID (IS)> & <universal ID (ST)> & <universal ID type (ID)>

Subcomponents of assigning facility: <namespace ID (IS)> & <universal ID (ST)> & <universal ID type (ID)>

Definition: This field contains the prior patient account number. Refer to HL7 table 0061 - Check digit scheme as defined in Chapter 2.

3.3.8.4 Prior patient ID - external (CX) 00214

Components: <ID (ST)> ^ <check digit (ST)> ^ <code identifying the check digit scheme employed (ID)> ^ <assigning authority (HD)> ^ <identifier type code (IS)> ^ <assigning facility (HD)>

Subcomponents of assigning authority: <namespace ID (IS)> & <universal ID (ST)> & <universal ID type (ID)>

Subcomponents of assigning facility: <namespace ID (IS)> & <universal ID (ST)> & <universal ID type (ID)>

Definition: This field contains the external prior patient identifier. Refer to HL7 table 0061 - Check digit scheme as defined in Chapter 2.

3.3.8.5 Prior visit number (CX) 01279

Components: <ID (ST)> ^ <check digit (ST)> ^ <code identifying the check digit scheme employed (ID)> ^ <assigning authority (HD)> ^ <identifier type code (IS)> ^ <assigning facility (HD)>

Subcomponents of assigning authority: <namespace ID (IS)> & <universal ID (ST)> & <universal ID type (ID)>

Subcomponents of assigning facility: <namespace ID (IS)> & <universal ID (ST)> & <universal ID type (ID)>

Definition: This field contains the prior visit number. Refer to HL7 table 0061 - Check digit scheme as defined in Chapter 2,

3.3.8.6 Prior alternate visit ID (CX) 01280

Components: <ID (ST)> ^ <check digit (ST)> ^ <code identifying the check digit scheme employed (ID)> ^ <assigning authority (HD)> ^ <identifier type code (IS)> ^ <assigning facility (HD)>

Subcomponents of assigning authority: <namespace ID (IS)> & <universal ID (ST)> & <universal ID type (ID)>

Subcomponents of assigning facility: <namespace ID (IS)> & <universal ID (ST)> & <universal ID type (ID)>

Definition: This field contains the prior alternate visit number. Refer to HL7 table 0061 - Check digit scheme as defined in Chapter 2.

3.3.8.7 Prior patient name (XPN) 01281

Components: <family name (ST)> ^ <given name (ST)> ^ <middle initial or name (ST)> ^ <suffix (e.g., JR or III) (ST)> ^ <prefix (e.g., DR) (ST)> ^ <degree (e.g., MD) (ST)> ^ <name type code (ID) >

Definition: This field contains the prior name of the patient This field is not used to change a patient name. Refer to Chapter 2 for the name type code table.

3.3.8.8 Segment notes: MRG merge patient information

The assigning facility ID, the fourth component of the patient identifiers, is an HD data type that is uniquely associated with the facility that originally assigned the number. A given institution, or group of intercommunicating institutions, should establish a list of facilities that may be potential assigners of patient identification (and other important identification) numbers. The list will be one of the institution’s master dictionary lists. Since third parties (other than the assigners of patient identification numbers) may send or receive HL7 messages containing patient identification numbers, the assigning facility ID in the patient identification numbers may not be the same as those of the sending and receiving systems identified in the MSH. The assigning facility ID must be unique across applications at a given site. This field is required in HL7 implementations that have more than a single ADT/REG application assigning such numbers.

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