# Identification of Questionnaire codes

**URL:** <https://forum.loinc.org/t/identification-of-questionnaire-codes/2633>\
**Category:** General\
**Tags:** fhir\
**Created:** [July 8, 2025, 1:48pm UTC](https://forum.loinc.org/t/identification-of-questionnaire-codes/2633 "2025-07-08T13:48:15Z")\
**Posts on this page:** 1\
**Showing post:** 3

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**Author:** ![achattopadhyay](https://forum.loinc.org/letter_avatar_proxy/v4/letter/a/e274bd/32.png) [@achattopadhyay](https://forum.loinc.org/u/achattopadhyay)\
**Post date:** [June 22, 2026, 6:50am UTC](https://forum.loinc.org/t/identification-of-questionnaire-codes/2633/3 "2026-06-22T06:50:18Z")

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Thanks for the response. Yes, I mean Patient Health Questionnaire (PHQ) codes. “Physical” was a typo. I want a filter that gives me a complete list of all PHQ codes from the set of LOINC codes. Is the filter “SURVEY.PHQ” sufficient for that? I am using the file PanelsandForms.csv for reference. Also, is there any FHIR API resource for fetching the same?

[LOINC Questionnaire definition - #5 by timbriscoe](https://forum.loinc.org/t/loinc-questionnaire-definition/2484/5) the API hit did not work as expected, earlier.

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