I23.7 vs I24.1
I23.7 and I24.1 can never be reported together. ICD-10-CM declares them mutually exclusive with an Excludes1 note, meaning the two conditions cannot occur in the same patient — so exactly one of them is correct for any given encounter.
The official note, declared on I24.1
postinfarction angina (I23.7)
I23.7
Postinfarction angina
Billable
- Chapter 9
- Diseases of the circulatory system
- Section
- I20-I25
Indexed under
- Angina › following acute myocardial infarction (attack) (cardiac) (chest) (heart) (pectoris) (syndrome) (vasomotor)
- Angina › post-infarctional (attack) (cardiac) (chest) (heart) (pectoris) (syndrome) (vasomotor)
- Complication › following › acute myocardial infarction NEC › angina (s) (from) (of)
I24.1
Dressler's syndrome
Billable
- Chapter 9
- Diseases of the circulatory system
- Section
- I20-I25
Use when the record says
- Postmyocardial infarction syndrome
Indexed under
- Dressler's syndrome
- Pericarditis › postinfarction (with decompensation) (with effusion)
- Syndrome › Dressler's
- Syndrome › postinfarction
- Syndrome › postmyocardial infarction
Excludes1 is not always absolute: where two conditions covered by the note are genuinely unrelated, CMS guidance permits reporting both. Document the reasoning rather than assuming it. More on Excludes1 vs Excludes2 · FY2027