Metadata

Name Alopecia areata
Type Disease or Syndrome
Group Skin
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 (GeiZN7PXDaTyPtwR8UNAbG)

Primary care

Disease Readcode Medcode ReadcodeDescr Category
Alopecia areata M240100 685.0 Alopecia areata Diagnosis of Alopecia areata
Alopecia areata M240111 60422.0 Ophiasis Diagnosis of Alopecia areata
Alopecia areata M240B00 2449.0 Alopecia totalis Diagnosis of Alopecia areata
Alopecia areata M240K00 2154.0 Alopecia universalis Diagnosis of Alopecia areata
Alopecia areata M240U00 99217.0 Ophiasis Diagnosis of Alopecia areata
Alopecia areata Myu6200 53782.0 [X]Other alopecia areata Diagnosis of Alopecia areata

Secondary care

Diagnoses

Disease ICD10code ICD10codeDescr Category
Alopecia areata L63 Alopecia areata Diagnosis of Alopecia areata

Implementation

At the specified date, a patient is defined as having had 'Alopecia areata' IF they meet the criteria for any of the following on or before the specified date. 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:

Primary care
1. 'Alopecia areata' diagnosis or history of diagnosis during a consultation 
OR
Secondary care (ICD10)
1. ALL diagnoses of 'Alopecia areata' or history of diagnosis during a hospitalization

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