Lower Respiratory Tract Infection

Coding system
CTV3 (Read V3)
Codelist ID

  • 2020-05-19


Codes indicating a diagnosis of a lower respiratory tract infection excluding pneumonia


The LRTI codelist was developed in line with Rothnie et al (see reference list) in order to identify COPD patients who were experiencing exacerbations of COPD. It is linked with the corresponding COPD exacerbation list.

This codelist was derived by the following method:

  • Read 2 Codelist provided by LSHTM.
  • Codes from Quality Outcome Framework (QOF) were examined and there were no relevant codes for LRTI
  • Codes from SNOMED were taken by searching for relevant codes

These 3 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): - Pneumonia codes were removed as per Rothnie protocol

After discussion, bronchiolitis and virus detected codes were kept in to keep in line with Rothnie protocol.


Signed off by

  • Brian MacKenna, (May 15, 2020)
  • Ian Douglas, (May 15, 2020)
CTV3PreferredTermDesc CTV3ID CTV3Source
[X]Acute bronchiolitis due to other specified organisms Hyu11 CTV3Map_Code_And_Term
[X]Acute bronchitis due to other specified organisms Hyu10 CTV3Map_Code_And_Term
[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
[X]Other acute lower respiratory infections Hyu1. CTV3Map_Code_And_Term
Acute bacterial bronchitis X1007 CTV3_Children
Acute bacterial bronchitis unspecified H060x CTV3Map_Code_And_Term
Acute bronchiolitis H061. CTV3Map_Code_And_Term
Acute bronchiolitis due to adenovirus X100D CTV3_Children
Acute bronchiolitis due to human metapneumovirus XaYYt CTV3_Children
Acute bronchiolitis due to other specified organisms H0616 CTV3Map_Code_And_Term
Acute bronchiolitis due to respiratory syncytial virus H0615 CTV3Map_Code_And_Term
Acute bronchiolitis NOS H061z CTV3Map_Code_And_Term
Acute bronchiolitis with bronchospasm H0612 CTV3Map_Code_And_Term
Acute bronchitis XE0Xr CTV3Map_Code_Only
Acute bronchitis XE0Xr CTV3Map_Code_And_Term
Acute bronchitis (& wheezy) H060. CTV3_Children
Acute bronchitis and bronchiolitis H06.. CTV3Map_Code_And_Term
Acute bronchitis due to rhinovirus H060E CTV3Map_Code_And_Term
Acute bronchitis NOS H060z CTV3Map_Code_And_Term
Acute bronchitis or bronchiolitis NOS H06z. CTV3Map_Code_And_Term
Acute capillary bronchiolitis H0610 CTV3Map_Code_And_Term
Acute chlamydial bronchitis X100A CTV3_Children
Acute coxsackievirus bronchitis H060B CTV3Map_Code_And_Term
Acute croupous bronchitis H0604 CTV3Map_Code_And_Term
Acute echovirus bronchitis H060F CTV3Map_Code_And_Term
Acute exudative bronchiolitis H0613 CTV3Map_Code_And_Term
Acute fibrinous bronchitis H0600 CTV3_Children
Acute haemophilus influenzae bronchitis H0608 CTV3Map_Code_And_Term
Acute infective bronchitis XaDtB CTV3_Children
Acute lower respiratory tract infection XE0Xt CTV3Map_Code_Only
Acute lower respiratory tract infection XE0Xt CTV3Map_Code_And_Term
Acute membranous bronchitis H0601 CTV3Map_Code_And_Term
Acute mycoplasmal bronchitis X1009 CTV3_Children
Acute Neisseria catarrhalis bronchitis H0609 CTV3Map_Code_And_Term
Acute obliterating bronchiolitis H0611 CTV3Map_Code_And_Term
Acute parainfluenza virus bronchitis H060C CTV3Map_Code_And_Term
Acute pneumococcal bronchitis H0606 CTV3Map_Code_And_Term
Acute pseudomembranous bronchitis H0602 CTV3Map_Code_And_Term
Acute purulent bronchitis H0603 CTV3Map_Code_And_Term
Acute respiratory syncytial virus bronchitis H060D CTV3Map_Code_And_Term
Acute streptococcal bronchitis H0607 CTV3Map_Code_And_Term
Acute viral bronchiolitis X100C CTV3_Children
Acute viral bronchitis X100B CTV3_Children
Acute viral bronchitis unspecified H060w CTV3Map_Code_And_Term
Acute wheezy bronchitis XM1QX CTV3Map_Code_And_Term
Acute wheezy bronchitis XM1QX CTV3Map_Code_Only
Acute: [bronchitis]/[chest infections]/[tracheobronchitis] XE0Yt CTV3_Children
Avian influenza XaMih CTV3Map_Code_And_Term
Avian influenza virus nucleic acid detection XaLT5 CTV3Map_Code_And_Term
Bronchiolitis obliterans X101l CTV3Map_Code_And_Term
Bronchiolitis obliterans with usual interstitial pneumonitis X102z CTV3_Children
Chest cold H07.. CTV3Map_Code_And_Term
Chest infection - unspecified bronchitis X1006 CTV3Map_Code_And_Term
Chest infection (& NOS) H06z0 CTV3_Children
Chest infection NOS XE0Xs CTV3Map_Code_Only
Chest infection NOS XE0Xs CTV3Map_Code_And_Term
Chronic obstruct pulmonary dis with acute lower resp infectn H3y0. CTV3Map_Code_And_Term
Drug-induced bronchiolitis obliterans X101m CTV3_Children
Flu-like illness NOS XM0s0 CTV3_Children
Human parainfluenza virus detected XaPOk CTV3Map_Code_And_Term
Infection of lower respiratory tract X1004 CTV3Map_Code_Only
Infection of lower respiratory tract X1004 CTV3Map_Code_And_Term
Infection of lower respiratory tract and mediastinum XM1QV CTV3_Children
Influenza H27.. 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 virus detected XaPIS CTV3Map_Code_And_Term
Influenza due to Influenza A virus subtype H1N1 XaQQp CTV3Map_Code_Only
Influenza due to Influenza A virus subtype H1N1 XaQQp CTV3Map_Code_And_Term
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 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 NOS XE0YK CTV3Map_Code_Only
Influenza with bronchopneumonia H2700 CTV3_Children
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 due to seasonal influenza virus XaeVN CTV3_Children
Influenza with pneumonia NOS H270z CTV3_Children
Influenza with pneumonia, influenza virus identified H2701 CTV3_Children
Influenza with respiratory manifestations NOS H271z CTV3Map_Code_And_Term
Influenzal pneumonia H270. CTV3_Children
Influenza-like illness XM0rz CTV3Map_Code_And_Term
Influenza-like illness XM0rz CTV3Map_Code_Only
Influenza-like symptoms XaIBK CTV3Map_Code_And_Term
Obliterating fibrous bronchiolitis H0614 CTV3Map_Code_And_Term
Parainfluenza type 1 nucleic acid detection XaMB6 CTV3Map_Code_And_Term
Parainfluenza type 2 nucleic acid detection XaMB7 CTV3Map_Code_And_Term
Parainfluenza type 3 nucleic acid detection XaMB8 CTV3Map_Code_And_Term
Parainfluenzal pneumonia H202. CTV3_Children
Pneumonia and influenza H2... CTV3_Children
Possible influenza A virus H1N1 subtype XaQVc CTV3Map_Code_And_Term
Postoperative chest infection SP132 CTV3_Children
Respiratory tract infection (& [acute lower] or [lower]) H06z1 CTV3_Children
Subacute bronchitis unspecified H060v CTV3_Children
Suspected influenza A virus subtype H1N1 infection XaQSm CTV3Map_Code_Only
Suspected influenza A virus subtype H1N1 infection XaQSm CTV3Map_Code_And_Term
Toxic bronchiolitis obliterans H4641 CTV3_Children
Viral pneumonia (& chest infection) H20.. CTV3_Children
[X]Influenza with other manifestations, virus not identified Hyu07 CTV3Map_Code_And_Term

Codes not in the full codelist are in faint grey.