Documented Influenza illness



Coding system
CTV3 (Read V3)
Coding system release
unknown
Organisation
OpenSAFELY
Codelist ID
opensafely/documented-influenza-illness
Version Tag
2020-05-18
Version ID
2313bf7e

Versions
  • 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, (May 18, 2020)
  • Harriet Forbes, (May 18, 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.

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.