Primary ICD Diagnostic Code

Change History
DSCN 2022 / 06	Main Specialty (Consultant) (AMD)
DSCN 2019 / 09	National Cancer Data Standards for Wales – Core
DSCN 2016 / 05	The International Classification of Diseases Tenth Revision (ICD-10) 5th Edition
DSCN 2015 / 03	Radiotherapy Data Set

This data item is / was included in the following data sets / collections between the dates shown:

Data Set / Collection	Valid From	Valid To
APC ds99	1^st April 1999
OP ds	1^st April 1999
RTDS	1^st April 2014
National Cancer Ds - Core

This is the patient diagnosis for:

• the main condition treated or investigated during the relevant episode of healthcare and

• where there is no definitive diagnosis, the main symptom, abnormal findings or problem.

It is a classification of diseases, injuries and causes of death according to the 10^th Revision of International Statistical Classification of Diseases and Health Related Problems (ICD10).

ICD Version	Valid From	Valid To
ICD-9		30^th September 1994
ICD-10	1^st August 1994	30^th June 2012
ICD-10 4^th Edition	1^st July 2012	31^st March 2016
ICD-10 5^th Edition	1^st April 2016

Format: 6 character alpha-numeric

Value	Meaning
ANNXXX	ICD10 code
Spaces	Not applicable
Character position	Valid Values
1	A-Z
2-3	00-99
4	0-9, or 'X' if absent
5	0-9, or space if absent
6	A, D or space