COVID identification in primary care - potential historic case



Project
OpenSAFELY
Coding system
CTV3 (Read V3) with TPP extensions
Version
2020-06-23
Codelist ID
opensafely/covid-identification-in-primary-care-potential-historic-case

Description

Codes indicating COVID-19 case (1 of 7 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 "potential historic case" 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, LSHTM (June 23, 2020)
  • Alex Walker, EBM Datalab (June 23, 2020)

This definition has been computed by taking the manually created full codelist and converting it to a list of rules that define the codelist.

CTV3ID CTV3PreferredTermDesc
Y210f Measurement of severe acute respiratory syndrome coronavirus 2 antibody (procedure)
Y240e Point of care measurement of severe acute respiratory syndrome coronavirus 2 antibody (procedure)
Y23ea SARS-CoV-2 (severe acute respiratory syndrome coronavirus 2) IgG detection result negative
Y23ee SARS-CoV-2 (severe acute respiratory syndrome coronavirus 2) IgM detection result negative
Y23f8 SARS-CoV-2 (severe acute respiratory syndrome coronavirus 2) IgG detection result unknown
Y23f3 SARS-CoV-2 (severe acute respiratory syndrome coronavirus 2) IgM detection result unknown
Y247c Severe acute respiratory syndrome coronavirus 2 immunoglobulin A not detected (finding)
Y23e7 SARS-CoV-2 (severe acute respiratory syndrome coronavirus 2) immunity status equivocal
Y23eb SARS-CoV-2 (severe acute respiratory syndrome coronavirus 2) IgG detection result equivocal
Y23ef SARS-CoV-2 (severe acute respiratory syndrome coronavirus 2) IgM detection result equivocal
Y23e8 SARS-CoV-2 (severe acute respiratory syndrome coronavirus 2) immunity status unknown
Y247b Severe acute respiratory syndrome coronavirus 2 immunoglobulin A detection result unknown (finding)
Y23e6 Does not have immunity to SARS-CoV-2 (severe acute respiratory syndrome coronavirus 2)
Y247a Severe acute respiratory syndrome coronavirus 2 immunoglobulin A detection result equivocal (finding)

Codes in the definition are underlined. Codes in the full codelist are in blue. Related codes not in the codelist are in black.