Error in Accessing HL7 v2 field information

[sandeep59]

Hi, I have customized the ADT templates as per the version of HL7 v2, I could access the information from a field PV1-2 earlier and after few days I again run the templates but this time the information from PV1-2 is not accessible, then I used PV1-2-1 to access the same information in partial templates, and now this doesn't work any more, I have to use PV1-2-1-1 to access the same information.

It seems that this is happening after I configured for subcomponents for HL7 v2 in few fields but not sure.

Note:- PV1 segment is an example

[ACMoretxj]

Sorry for can't understand your issue, could you please descript your issue with more details?

[sandeep59]

Sorry for can't understand your issue, could you please descript your issue with more details?

I have updated the comments.

[ACMoretxj]

Can you provide the templates and sample data you used in this scenario? (Of course please desensitize sensitive data)

[sandeep59]

Can you provide the templates and sample data you used in this scenario? (Of course please desensitize sensitive data)

Template used is ADT_A01 it is being customized as per our requirements.

MSH|^~\&|AccMgr|1|||20050110045504||ADT^A01|599102|P|2.3||| EVN|A01|20050110045502||||| PID|1||10006579^^^1^MR^1||DUCK^DONALD^D||19241010|M||1|111 DUCK ST^^FOWL^CA^999990000^^M|1|8885551212|8885551212|1|2||40007716^^^AccMgr^VN^1|123121234|||||||||||NO NK1|1|DUCK^HUEY|SO|3583 DUCK RD^^FOWL^CA^999990000|8885552222||Y|||||||||||||| PV1|1|I|PREOP^101^1^1^^^S|3|||37^DISNEY^WALT^^^^^^AccMgr^^^^CI|||01||||1|||37^DISNEY^WALT^^^^^^AccMgr^^^^CI|2|40007716^^^AccMgr^VN|4|||||||||||||||||||1||G|||20050110045253|||||| GT1|1|8291|DUCK^DONALD^D||111^DUCK ST^^FOWL^CA^999990000|8885551212||19241010|M||1|123121234||||#Cartoon Ducks Inc|111^DUCK ST^^FOWL^CA^999990000|8885551212||PT| DG1|1|I9|71596^OSTEOARTHROS NOS-L/LEG ^I9|OSTEOARTHROS NOS-L/LEG ||A| IN1|1|MEDICARE|3|MEDICARE|||||||Cartoon Ducks Inc|19891001|||4|DUCK^DONALD^D|1|19241010|111^DUCK ST^^FOWL^CA^999990000|||||||||||||||||123121234A||||||PT|M|111 DUCK ST^^FOWL^CA^999990000|||||8291 IN2|1||123121234|Cartoon Ducks Inc|||123121234A|||||||||||||||||||||||||||||||||||||||||||||||||||||||||8885551212 IN1|2|NON-PRIMARY|9|MEDICAL MUTUAL CALIF.|PO BOX 94776^^HOLLYWOOD^CA^441414776||8003621279|PUBSUMB|||Cartoon Ducks Inc||||7|DUCK^DONALD^D|1|19241010|111 DUCK ST^^FOWL^CA^999990000|||||||||||||||||056269770||||||PT|M|111^DUCK ST^^FOWL^CA^999990000|||||8291 IN2|2||123121234|Cartoon Ducks Inc||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||8885551212 IN1|3|SELF PAY|1|SELF PAY|||||||||||5||1

[ACMoretxj]

Hi, after parsing the data you provided, I found the result points that the content of PV1-2 is as follows:

[
    [
        "1"
    ]
]

Apparantly the PV1-2, PV1-2-1 and PV1-2-1-1 are all equal to 'I' ([['I']] == 'I' will return true in node). This can explain why you can one side change the identifier and one side still get a workable result.

On the other hand, if you changes the sample data or something else which causes the PV1-2 becoming more complex than a single [['I']], the condition will no longer be true.

Hope it helps for you, if I missed anything, please feel free to point out.

[sandeep59]

Can you please explain by utilizing some hl7 v2 message, how does it change by changing data in message?

[ACMoretxj]

Sure. Replace the PV1 line in the data you provided with the following one:

PV1|1|I^text|PREOP^101^1^1^^^S|3|||37^DISNEY^WALT^^^^^^AccMgr^^^^CI|||01||||1|||37^DISNEY^WALT^^^^^^AccMgr^^^^CI|2|40007716^^^AccMgr^VN|4|||||||||||||||||||1||G|||20050110045253|||||| 

And the PV1-2 will subsequently becomes:

[
    [
        "1"
    ],
    [
        "text"
    ]
]

Then using the following template:

And you will get the following result(the condition of status-1 is false):

P.S. If you use the origin data, you will get the following result(all the conditions are true):

[sandeep59]

But in the sample message I have provided its "I" only in PV1-2, then PV1-2, PV1-2-1 and PV1-2-1-1 all should be true

[ACMoretxj]

But in the sample message I have provided its "I" only in PV1-2, then PV1-2, PV1-2-1 and PV1-2-1-1 all should be true

Yes, only a value of [['I']] for PV1-2 will not break the conditions. You said you have customized the templates, can you give me the template after your customization?

[sandeep59]

But in the sample message I have provided its "I" only in PV1-2, then PV1-2, PV1-2-1 and PV1-2-1-1 all should be true

Yes, only a value of [['I']] for PV1-2 will not break the conditions. You said you have customized the templates, can you give me the template after your customization?

using the attached template, I am unable to pick data from PID-8, which is patient gender, I have to use PID-8-1-1 to get the data. Please check Patient_resource.txt

[ACMoretxj]

But in the sample message I have provided its "I" only in PV1-2, then PV1-2, PV1-2-1 and PV1-2-1-1 all should be true

Yes, only a value of [['I']] for PV1-2 will not break the conditions. You said you have customized the templates, can you give me the template after your customization?

using the attached template, I am unable to pick data from PID-8, which is patient gender, I have to use PID-8-1-1 to get the data. Please check Patient_resource.txt

Hi, the problem you encountered about PID-8 is exactly the same with PV1-2([['M']] vs. [['I']]). Please refer the HL7V2 spec for more details.

[sandeep59]

Hi, Yes, both issues are same, It should pick up information using PID-8, PID-8-1,PID-8-1-1 as we only receive a single value in PID-8 either "M" or "F" But it is only true when I use PID-8-1-1

[ACMoretxj]

It seems that some modifications influence the comparison logic. How about trying to downgrade the FHIR-Converter project to the online master version and see whether the behaviors can meet your expection or not?

If the behaviors are normal, then try to append your customizations step by step to see which part is the actual reason :-)

[ACMoretxj]

Now close this issue, please feel free to reopen it for any questions.