Person—coronary artery disease intervention (history), code N

Identifying and definitional attributes

Metadata item type:Data Element
Short name:Coronary artery disease—history of intervention or procedure
METeOR identifier:270227
Registration status:Health, Standard 01/03/2005
Definition:Whether the individual has undergone a coronary artery by-pass grafting (CABG), angioplasty or stent, as represented by a code.
Data Element Concept:Person—coronary artery disease intervention

Value domain attributes

Representational attributes

Representation class:Code
Data type:Number
Maximum character length:1
Permissible values:
1CABG, angioplasty or stent - undertaken in last 12 months
2CABG, angioplasty or stent - undertaken prior to the last 12 months
3CABG, angioplasty or stent - both within and prior to the last 12 months
4No CABG, angioplasty or stent undertaken
Supplementary values:
9Not stated/inadequately described

Collection and usage attributes


CABG is known as 'bypass surgery' when a piece of vein (taken from the leg) or of an artery (taken from the chest or wrist) is used to form a connection between the aorta and the coronary artery distal to the obstructive lesion, making a bypass around the blockage. Angioplasty is an elective surgery technique of blood vessels reconstruction.

Stenting is a non-surgical treatment used with balloon angioplasty or after, to treat coronary artery disease to widen a coronary artery. A stent is a small, expandable wire mesh tube that is inserted. The purpose of the stent is to help hold the newly treated artery open, reducing the risk of the artery re-closing (re-stenosis) over time.

Angioplasty with stenting typically leaves less than 10% of the original blockage in the artery (Heart Center Online).

These three procedures are commonly used to improve blood flow to the heart muscle when the heart's arteries are narrowed or blocked.

The sooner procedures are done, the greater the chances of saving heart muscle.

Data element attributes

Collection and usage attributes

Collection methods:Ask the individual if he/she has had a CABG, angioplasty or coronary stent. If so determine when it was undertaken within or prior to the last 12 months (or both).

Source and reference attributes

Submitting organisation:National Diabetes Data Working Group
Origin:National Diabetes Outcomes Quality Review Initiative (NDOQRIN) data dictionary.

Relational attributes

Related metadata references:

Supersedes Coronary artery disease - history of intervention or procedure, version 1, DE, NHDD, NHIMG, Superseded 01/03/2005.pdf (16.3 KB)

Implementation in Data Set Specifications:

Diabetes (clinical) DSS Health, Superseded 21/09/2005

Diabetes (clinical) NBPDS Health, Standard 21/09/2005

Diabetes (clinical) NBPDS Health, Candidate 15/05/2017