Alopecia areata

• Metadata
• Primary care
• Secondary care
  • Diagnoses
• Implementation
• Publications

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)

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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