Table 1

Coding frame for coronary heart disease, 1931 to 2005

ICD revision
ICD code
Primary description
Secondary description

ICD-4
94
Diseases of the coronary arteries, Angina pectoris

ICD-5
94b
Angina pectoris without mention of coronary disease

ICD-5
94a
Diseases of the coronary arteries

ICD-6
4202
Arteriosclerotic heart disease, including coronary disease
Angina pectoris without mention of coronary disease
ICD-6
4201
Arteriosclerotic heart disease, including coronary disease
Heart disease specified as involving coronary arteries
ICD-6
4200
Arteriosclerotic heart disease, including coronary disease
Arteriosclerotic heart disease so described
ICD-7
4202
Arteriosclerotic heart disease, including coronary disease
Angina pectoris without mention of coronary disease
ICD-7
4201
Arteriosclerotic heart disease, including coronary disease
Heart disease specified as involving coronary arteries
ICD-7
4200
Arteriosclerotic heart disease, including coronary disease
Artetriosclerotic heart disease so described
ICD-8
4149
Asymptomatic ischaemic heart disease
Without mention of hypertensive disease
ICD-8
4140
Asymptomatic ischaemic heart disease
With hypertensive disease
ICD-8
4139
Angina pectoris
Without mention of hypertensive disease
ICD-8
4130
Angina pectoris
With hypertensive disease
ICD-8
4129
Chronic ischaemic heart disease
Other endocardial structures
ICD-8
4124
Chronic ischaemic heart disease
Cardiovascular disease without mention of hypertension or chronic ischaemic heart disease
ICD-8
4123
Chronic ischaemic heart disease
Chronic ischaemic heart disease with no mention of hypertension
ICD-8
4122
Chronic ischaemic heart disease
Cardiovascular disease with hypertension but no mention of chronic ischaemic heart disease
ICD-8
4121
Chronic ischaemic heart disease
Chronic ischaemic heart disease with hypertension
ICD-8
4120
Chronic ischaemic heart disease
Chronic ischaemic heart disease
ICD-8
4119
Other acute and sub-acute forms of ischaemic heart disease
Without mention of hypertensive disease
ICD-8
4110
Other acute and sub-acute forms of ischaemic heart disease
With hypertensive disease
ICD-8
4109
Acute myocardial infarction
Without mention of hypertensive disease
ICD-8
4100
Acute myocardial infarction
With hypertensive disease
ICD-9
4149
Other forms of chronic ischaemic heart disease
Unspecified
ICD-9
4148
Other forms of chronic ischaemic heart disease
Other
ICD-9
4141
Other forms of chronic ischaemic heart disease
Aneurysm of heart
ICD-9
4140
Other forms of chronic ischaemic heart disease
Coronary atherosclerosis
ICD-9
4130
Angina pectoris
Angina pectoris
ICD-9
4120
Old myocardial infarction
Old myocardial infarction
ICD-9
4110
Other acute and subacute forms of ischaemic heart disease
Other acute and subacute forms of ischaemic heart disease
ICD-9
4100
Acute myocardial infarction
Acute myocardial infarction
ICD-10
I20
Angina pectoris

ICD-10
I21
Acute myocardial infarction (AMI)

ICD-10
I22
Subsequent myocardial infarction

ICD-10
I23
Certain current complications following AMI

ICD-10
I24
Other acute ischaemic diseases

ICD-10
I25
Chronic ischaemic heart disease


Allender et al. BMC Public Health 2008 8:148   doi:10.1186/1471-2458-8-148