Metadata

Name Unstable Angina
Type Disease or Syndrome
Group Cardiovascular
Data Sources

Clinical Terminologies Read Version 2
ICD-10
Codelists
Valid Event Data Range 01/01/1999 - 01/07/2016
Sex Female
Male
Authors Kuan V, Denaxas S, Gonzalez-Izquierdo A, Direk K, Bhatti O, Husain S, Sutaria S, Hingorani M, Nitsch D, Parisinos C, Lumbers T, Mathur R, Sofat R, Casas JP, Wong I, Hemingway H, Hingorani A
Agreement Date 20 May 2019
Version (UUID) 1 (CCQUoFjx2ZzPrqrX8ubGDQ)

Primary care

Disease Readcode Medcode ReadcodeDescr Category
Unstable Angina 662K300 29300 Angina control - worsening Worsening angina (2)
Unstable Angina G311300 34328 Refractory angina Worsening angina (2)
Unstable Angina G311400 18118 Worsening angina Worsening angina (2)
Unstable Angina G311.00 36523 Preinfarction syndrome Unstable angina (3)
Unstable Angina G311.11 4656 Crescendo angina Unstable angina (3)
Unstable Angina G311.12 39655 Impending infarction Unstable angina (3)
Unstable Angina G311.13 1431 Unstable angina Unstable angina (3)
Unstable Angina G311.14 19655 Angina at rest Unstable angina (3)
Unstable Angina G311100 7347 Unstable angina Unstable angina (3)
Unstable Angina G311200 17307 Angina at rest Unstable angina (3)
Unstable Angina G311z00 54251 Preinfarction syndrome NOS Unstable angina (3)
Unstable Angina G312.00 39449 Coronary thrombosis not resulting in myocardial infarction Unstable angina (3)
Unstable Angina G31y000 9276 Acute coronary insufficiency Unstable angina (3)
Unstable Angina G33z000 66388 Status anginosus Unstable angina (3)
Unstable Angina G311500 11983 Acute coronary syndrome ACS diagnosed (3)

Secondary care

Diagnoses

Disease ICD10code ICD10codeDescr Category
Unstable Angina I200 Unstable angina yes (1)

Implementation

Use MODIFIED CALIBER 'Unstable Angina' phenotyping algorithm:

At the specified date, a patient is considered to have had 'Unstable Angina' IF they meet the criteria for any of the following on or before the specified date: 
A hospitalization with the non-specific diagnosis of 'angina' as the primary diagnosis, where there is no procedure giving a reason for admission (PCI or CABG), is considered to be 'Unstable Angina'.

The earliest date on which the individual meets any of the following criteria on or before the specified date is defined as the first event date:
1.	Primary care
    a)	Diagnosis of 'Unstable Angina'; unangina_gprd,  category 2, 3
    b)	Diagnosis of acute coronary syndrome not otherwise specified; acs_gprd, category 3
2.	Secondary care
    a)	Primary or secondary diagnosis of unspecified angina (ICD-10 I20.9) during a hospitalization that did not have a PCI or CABG procedure performed
    b)	Primary or secondary diagnosis of acute ischaemic heart disease during a hospitalization; acute_ihd_hes, category 3
    c)	Primary or secondary diagnosis of 'Unstable Angina' during a hospitalization; uangina_hes, category 1

Publications

Kuan V., Denaxas S., Gonzalez-Izquierdo A. et al. A chronological map of 308 physical and mental health conditions from 4 million individuals in the National Health Service. The Lancet Digital Health - DOI 10.1016/S2589-7500(19)30012-3