HISO 10004:2019 New Zealand Pathology Observation Code Sets

Published online: 
01 April 2015

The New Zealand Pathology Observation Code Sets (NZPOCS) standard comprises code sets for ordering and reporting laboratory tests and results. HISO maintains NZPOCS in partnership with the National Pathology and Laboratory Round Table.

The code sets are based on international standards LOINC and SNOMED CT, and cover all commonly performed pathology tests in biochemistry, haematology, immunology, microbiology, virology/serology and toxicology. NZPOCS will be extended to new test types such as molecular tests and multi-drug resistant organism screening tests.

Coding for COVID-19 lab tests

Regular updates will be included in NZPOCS to incorporate new LOINC codes for COVID-19 related tests. New Zealand laboratories are advised to use the new codes when reporting COVID-19 test results.

Regenstrief Institute has created these ‘special use’ codes in response to the pandemic. The codes are deemed ‘in development’ and are subject to change prior to inclusion in a public release.

Download the current release that incorporates the 17 June 2020 release and new LOINC codes for COVID-19 tests:

For all COVID-19 tests that have been added to NZPOCS, refer to:

See the LOINC website for more information on the COVID-19 test codes.

View the changes from previous NZPOCS releases in the spreadsheets below:

Regular updates to NZPOCS will be published in April and October every year.

HISO expects laboratories and other agencies to have applied the latest release of NZPOCS by 30 December 2020.

To submit changes or new code requests email [email protected].

Microorganism code set

NZPOCS now has a microorganism code set that includes all 18,000 concepts in the SNOMED microorganism hierarchy. The code set is published in the SNOMED NZ Edition.

This choice of code set of was agreed in 2018 between HISO, the National Pathology and Laboratory Round Table and the New Zealand Microbiology Network. Laboratory information managers and their industry partners were consulted on the changes at the time.

The code set considerably extends the Royal College of Pathology of Australasia (RCPA) microorganism code set of about 3000 concepts, to provide better cover and avoid difficulties in using and maintaining a restricted set. We will work with our RCPA partners when requesting additions to the microorganism content in SNOMED. 

A related decision concerns how resistance mechanisms such as methicillin resistant staphylococcus aureus (MRSA), extended spectrum beta lactamase (ESBL) and vancomycin resistant enterococcus (VRE) are recorded. In these cases, the decision is to code the microorganism and the resistance mechanism as separate data elements in the report. Resistance mechanism should be coded as a SNOMED concept under Infection caused by resistant organism (disorder). We will work with RCPA on any additions needed.

HISO's expectation is that SNOMED will be implemented in all systems exchanging laboratory information, for end-to-end interoperability that doesn’t depend on mapping. This applies to laboratory information systems and repositories, infection control systems and clinical information systems.


The SNOMED NZ Edition can be downloaded in standard release file format from the SNOMED Member Licensing and Distribution Service. Laboratory information systems need to be loaded with each new release to stay up-to-date with the microorganism code set.

Other developing content in the SNOMED NZ Edition includes the RCPA laboratory order code set.

The SNOMED browser and the SNOMED reference set tool are available to end users and developers for viewing and downloading content such as the microorganism code set.

LOINC terms of use

The above documents contain material from the LOINC table, LOINC codes, and LOINC panels and forms file, which are copyright (c) 1995–2020 Regenstrief Institute, Inc and the Logical Observation Identifiers Names and Codes (LOINC) Committee. These resources are available at no cost but are subject to the LOINC terms of use.

Publishing information

  • Date of publication:
    01 April 2015
  • Ordering information:
    Only soft copy available to download
  • Copyright status:

    Third-party content. Please check the document or email the Web Manager to find out how to obtain permission to re-use content.

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