I25.9
BillableChronic ischemic heart disease, unspecified
HCC Category Mapping
RxHCCHCC 188 — Coronary Artery Disease and Angina
0.000What This Code Means
A chronic condition where the heart muscle doesn't receive adequate blood flow due to coronary artery disease, but the specific cause or type is not documented.
Coding Tips
- •This is the least specific code in the chronic ischemic heart disease category; query the provider for more specific documentation when possible
- •Use only when no other I25 code can be determined from the medical record
Clinical Significance
This code represents the least specific designation for chronic ischemic heart disease. It is used when the provider documents chronic ischemic heart disease without further characterization of the specific type, location, or manifestation. This code should trigger a documentation improvement initiative as more specific coding is almost always achievable through provider query and record review.
Documentation Requirements
- ✓Provider documentation of chronic ischemic heart disease
- ✓Documentation insufficient to classify to a more specific I25 subcategory
- ✓Provider query initiated to determine specific type of ischemic heart disease
- ✓Basic cardiac evaluation results if available
- ✓Treatment plan for ischemic heart disease
Commonly Confused Codes
I25.10 — Atherosclerotic heart disease of native coronary artery; more specific and preferred when atherosclerosis is documentedI25.89 — Other forms of chronic ischemic heart disease; for documented conditions not fitting specific subcategoriesI25.5 — Ischemic cardiomyopathy; when ischemia has caused cardiomyopathyI20.9 — Angina pectoris, unspecified; symptom code rather than disease code
Code Hierarchy
└I25Chronic ischemic heart disease└I25.9Chronic ischemic heart disease, unspecified
└I25.9Chronic ischemic heart disease, unspecified