Documented Influenza illness



Coding system
CTV3 (Read V3) with TPP extensions
Project
OpenSAFELY
Codelist ID
opensafely/documented-influenza-illness
Version
2020-05-18

Description

Codes indicating a diagnosis of influenza or influenza-like illness

Methodology

This codelist was derived by the following method:

  • Read 2 Codelist provided by LSHTM. This was from Jennifer Davidson's list. In addition the following codes were added:
    • Telephone consultation suspected influenza A virus subtype H1N1
    • Telephone consultation for suspected swine flu
    • Encephalitis due to influenza-specific virus not identified
    • Encephalitis due to influenza-virus identified
  • Codes from Quality Outcome Framework (QOF) were examined and no relevant terms were found
  • Codes from SNOMED were taken by searching for relevant influenza terms and a list was created.

These 2 lists were mapped into CTV3 by TPP to create one list. This list was examined by 2 people and the following logic applied (see github issue for more detail):

References

Signed off by

  • Caroline Morton, EBM Datalab (May 18, 2020)
  • Harriet Forbes, LSHTM (May 18, 2020)
CTV3PreferredTermDesc CTV3ID CTV3Source
Acute myocarditis - influenzal G5203 CTV3Map_Code_And_Term
Avian influenza XaMih CTV3Map_Code_And_Term
Avian influenza virus nucleic acid detection XaLT5 CTV3Map_Code_And_Term
Encephalitis due to influenza-specific virus not identified XaEGX CTV3_Children
Encephalitis due to influenza-virus identified XaC2H CTV3Map_Code_And_Term
Influenza H27.. CTV3Map_Code_And_Term
Influenza A nucleic acid detection XaYKq CTV3Map_Code_And_Term
Influenza A virus H1N1 subtype detected XaQVd CTV3Map_Code_And_Term
Influenza A virus, other or untyped strain detected XaPIR CTV3Map_Code_And_Term
Influenza B nucleic acid detection XaZMV CTV3Map_Code_And_Term
Influenza B virus detected XaPIS CTV3Map_Code_And_Term
Influenza H1 virus detected XaPIN CTV3Map_Code_And_Term
Influenza H2 virus detected XaPIO CTV3Map_Code_And_Term
Influenza H3 virus detected XaPIP CTV3Map_Code_And_Term
Influenza H5 virus detected XaPIQ CTV3Map_Code_And_Term
Influenza NOS XE0YK CTV3Map_Code_And_Term
Influenza due to Influenza A virus subtype H1N1 XaQQp CTV3Map_Code_And_Term
Influenza with bronchopneumonia H2700 CTV3Map_Code_And_Term
Influenza with encephalopathy H27y0 CTV3Map_Code_And_Term
Influenza with gastrointestinal tract involvement H27y1 CTV3Map_Code_And_Term
Influenza with laryngitis H2710 CTV3Map_Code_And_Term
Influenza with other manifestations H27y. CTV3Map_Code_And_Term
Influenza with other manifestations NOS H27yz CTV3Map_Code_And_Term
Influenza with other respiratory manifestation H271. CTV3Map_Code_And_Term
Influenza with pharyngitis H2711 CTV3Map_Code_And_Term
Influenza with pneumonia NOS H270z CTV3Map_Code_And_Term
Influenza with pneumonia, influenza virus identified H2701 CTV3Map_Code_And_Term
Influenza with respiratory manifestations NOS H271z CTV3Map_Code_And_Term
Influenza-like symptoms XaIBK CTV3Map_Code_And_Term
Other specified pneumonia or influenza H2y.. CTV3Map_Code_And_Term
Pneumonia and influenza H2... CTV3Map_Code_And_Term
Pneumonia or influenza NOS H2z.. CTV3Map_Code_And_Term
Possible influenza A virus H1N1 subtype XaQVc CTV3Map_Code_And_Term
Suspected influenza A virus subtype H1N1 infection XaQSm CTV3Map_Code_And_Term
Telephne consultatn suspected influenza A virus subtype H1N1 XaR6o CTV3Map_Code_Only
[X]Flu+oth respiratory manifestations,'flu virus identified Hyu04 CTV3Map_Code_And_Term
[X]Influenza+oth respiratory manifestatns,virus not identifd Hyu06 CTV3Map_Code_And_Term
[X]Influenza+other manifestations,influenza virus identified Hyu05 CTV3Map_Code_And_Term
(Influenza NOS) or (influenza-like illness) XE0ZJ High_Level_SNOMED
(Influenza like illness) or (influenza NOS) H27z. High_Level_SNOMED
Avian influenza virus nucleic acid detection assay Xab7R CTV3_Children
Avian influenza virus ribonucleic acid detection assay Xabob CTV3_Children
Encephalitis due to influenza XaC1s CTV3Map_Code_And_Term
Flu-like illness NOS XM0s0 CTV3_Children
Influenza A nucleic acid detection assay Xab85 CTV3_Children
Influenza A virus ribonucleic acid detection assay XabpY CTV3_Children
Influenza B nucleic acid detection assay Xab86 CTV3_Children
Influenza B virus ribonucleic acid detection assay XabpZ CTV3_Children
Influenza NOS XE0YK CTV3Map_Code_Only
Influenza due to Influenza A virus subtype H1N1 XaQQp CTV3Map_Code_Only
Influenza due to pandemic influenza virus XaeVL CTV3_Children
Influenza due to seasonal influenza virus XaeVM CTV3_Children
Influenza due to zoonotic influenza virus XaeVK CTV3_Children
Influenza with pneumonia due to seasonal influenza virus XaeVN CTV3_Children
Influenza-like illness XM0rz CTV3Map_Code_Only
Influenza-like illness XM0rz CTV3Map_Code_And_Term
Influenzal pneumonia H270. CTV3Map_Code_Only
Influenzal pneumonia H270. CTV3Map_Code_And_Term
Pneumonia and influenza &/or pneumonia XE0ZF High_Level_SNOMED
Suspected influenza A virus subtype H1N1 infection XaQSm CTV3Map_Code_Only
Swine influenza Y0b97 CTV3_Children
Telephne consultatn suspected influenza A virus subtype H1N1 XaR6o CTV3Map_Code_And_Term
[X]Influenza with other manifestations, virus not identified Hyu07 CTV3Map_Code_And_Term

Codes not in the full codelist are in faint grey.