I23.7
BillablePostinfarction angina
HCC Category Mapping
V28HCC 229 — Unstable Angina and Other Acute Ischemic Heart Disease
0.000V24HCC 87 — Unstable Angina and Other Acute Ischemic Heart Disease
0.274ESRDHCC 87 — Unstable Angina and Other Acute Ischemic Heart Disease
0.000RxHCCHCC 188 — Coronary Artery Disease and Angina
0.000What This Code Means
Chest pain or angina that develops after a heart attack as part of the recovery period.
Coding Tips
- •This code applies only to angina occurring as a current complication within the acute MI recovery period
- •Do not use this code if angina develops months or years after the initial MI; use chronic angina codes instead
Clinical Significance
Postinfarction angina represents chest pain occurring during the acute recovery phase following a myocardial infarction, indicating ongoing myocardial ischemia and high risk for reinfarction or death. This symptom suggests incomplete revascularization or multivessel disease and typically prompts urgent cardiac catheterization. It is a high-risk clinical marker that affects treatment decisions and prognosis.
Documentation Requirements
- ✓Documentation of angina occurring during the acute post-myocardial infarction period (within 4 weeks)
- ✓Clinical description of the anginal symptoms
- ✓Temporal relationship establishing the angina follows the acute myocardial infarction
- ✓Electrocardiogram changes during anginal episodes if documented
- ✓The underlying acute myocardial infarction coded separately (I21.x)
- ✓Treatment response and management plan
Commonly Confused Codes
I20.0 — Unstable angina: chest pain without prior myocardial infarction or angina beyond the acute post-myocardial infarction periodI20.89 — Other forms of angina pectoris: chronic angina not related to recent myocardial infarctionI25.111-I25.119 — Atherosclerotic heart disease with angina: chronic coronary artery disease with angina, not acute post-myocardial infarctionI23.8 — Other current complications following acute myocardial infarction: less specific