COVID identification in primary care - antigen test negative



Coding system
CTV3 (Read V3)
Coding system release
unknown
Organisation
OpenSAFELY
Codelist ID
opensafely/covid-identification-in-primary-care-antigen-test-negative
Version ID
702547ee

Versions

Description

Codes indicating COVID-19 antigen test negative (1 of 13 possible types of CTV3 codes that contain information related to COVID-19)

Methodology

Search of TPP CTV3 codes for terms relating to coronavirus, with additional (manual) check for any missing terms against the SNOMED list of COVID-19 related codes. Classification as "antigen test negative" was then performed following review of terms by six OpenSAFELY team members (including epidemiologists, clinicians, statisticians and infectious disease modellers).

References

Signed off by

  • Kevin Wing, (June 24, 2020)
  • Alex Walker, (June 24, 2020)

Codelists are developed by a broad community of users for individual study purposes, which may or may not meet the needs of other studies. They should not be thought of as universal definitions of a particular condition.

We don't offer any guarantees about what they do or don't identify. Users should carefully check that any codelist meets their needs, and seek clinical input where appropriate.

CTV3ID CTV3PreferredTermDesc
Y20d2 SARS-CoV-2 (severe acute respiratory syndrome coronavirus 2) RNA (ribonucleic acid) detection result negative
Y22a2 Coronavirus disease 19 caused by severe acute respiratory syndrome coronavirus 2 excluded by laboratory test (situation)
Y23f4 SARS-CoV-2 (severe acute respiratory syndrome coronavirus 2) detection result negative
Y2a3c SARS-CoV-2 (severe acute respiratory syndrome coronavirus 2) RNA (ribonucleic acid) detection result negative
Y269e SARS-CoV-2 (severe acute respiratory syndrome coronavirus 2) antigen detection result negative
Y26a2 SARS-CoV-2 (severe acute respiratory syndrome coronavirus 2) antibody detection result negative

Codes not in the full codelist are in faint grey.