I20.89
BillableOther forms of angina pectoris
HCC Category Mapping
V24HCC 88 — Angina Pectoris
0.000ESRDHCC 88 — Angina Pectoris
0.000RxHCCHCC 188 — Coronary Artery Disease and Angina
0.000What This Code Means
Chest pain caused by reduced blood flow to the heart that doesn't fit into other specific angina categories, such as vasospastic angina or angina occurring after exertion.
Coding Tips
Clinical Significance
Other forms of angina pectoris represent atypical angina variants that may indicate underlying coronary artery disease requiring risk stratification. Accurate capture ensures appropriate resource allocation for patients with ischemic symptoms that fall outside classic angina patterns. These patients often need further cardiac workup to rule out more severe ischemic heart disease.
Documentation Requirements
- ✓Description of the specific angina variant (e.g., angina decubitus, nocturnal angina, slow coronary flow angina)
- ✓Clinical presentation including onset, duration, frequency, and provocative factors
- ✓Diagnostic workup results (electrocardiogram, stress testing, cardiac catheterization if performed)
- ✓Current treatment plan and medication management
- ✓Exclusion of unstable angina (I20.0) and vasospastic angina (I20.1)
Commonly Confused Codes
I20.0 — Unstable angina: indicates worsening or new-onset angina at rest, a more acute and dangerous presentationI20.1 — Angina pectoris with documented spasm (Prinzmetal/vasospastic): requires documented coronary artery spasmI20.9 — Angina pectoris, unspecified: used only when the type of angina is not documented at allI25.111 — Atherosclerotic heart disease of native coronary artery with angina pectoris with documented spasm: combination code when coronary artery disease is also presentR07.9 — Chest pain, unspecified: should not be used when angina is the established diagnosis
Code Hierarchy
└I20Angina pectoris└I20.8Other forms of angina pectoris└I20.89Other forms of angina pectoris
└I20.89Other forms of angina pectoris