I20.8 is the authoritative medical code for Other forms of angina pectoris. This classification is used in medical billing and clinical recording to specify the clinical criteria for other forms of angina pectoris (ICD-10-CM I20.8), ensuring healthcare documentation aligns with 2026 federal coding standards.
Billing Status: NO. This is a clinician non-billable / parent hierarchy grouping in the ICD-10-CM system.
Official Registry Overview & Definition
Other forms of angina pectoris is a non-billable ICD-10-CM category code I20.8. A more specific billable subcode must be selected for claims submission. Excludes1 (not coded here): angina pectoris with atherosclerotic heart disease of native coronary arteries I25.1-; atherosclerosis of coronary artery bypass graft(s) and coronary artery of transplanted heart with angina pectoris I25.7-; postinfarction angina I23.7. Use additional code: code(s) for symptoms associated with angina equivalent; code to identify:; exposure to environmental tobacco smoke Z77.22; history of tobacco dependence Z87.891; occupational exposure to environmental tobacco smoke Z57.31; tobacco dependence F17.-; tobacco use Z72.0. Code also: the presence of hypertension I10-I1A.
Official Tabular Instructional Notes
Sequencing, inclusion, and exclusion notes published for I20.8 in the official ICD-10-CM tabular list.
Excludes1 — Not Coded Here
Conditions that can never be reported with this code; the two are mutually exclusive.
- angina pectoris with atherosclerotic heart disease of native coronary arteries I25.1-
- atherosclerosis of coronary artery bypass graft(s) and coronary artery of transplanted heart with angina pectoris I25.7-
- postinfarction angina I23.7
Code Also
Additional codes that may be required to fully describe the encounter.
- the presence of hypertension I10-I1A
Use Additional Code
Supplementary codes the tabular list directs you to add.
- code(s) for symptoms associated with angina equivalent
- code to identify:
- exposure to environmental tobacco smoke Z77.22
- history of tobacco dependence Z87.891
- occupational exposure to environmental tobacco smoke Z57.31
- tobacco dependence F17.-
- tobacco use Z72.0
Frequently Asked Questions (FAQ) & Clinical Guidance
Can I20.8 be billed directly?
No. I20.8 (Other forms of angina pectoris) is a non-billable ICD-10-CM category code. A more specific billable subcode must be selected based on clinical documentation.
What can't be coded together with I20.8?
Per Excludes1 instructions, I20.8 must not be reported with: angina pectoris with atherosclerotic heart disease of native coronary arteries (I25.1-); atherosclerosis of coronary artery bypass graft(s) and coronary artery of transplanted heart with angina pectoris (I25.7-); postinfarction angina (I23.7).
Is an additional code needed with I20.8?
Use additional code(s) to specify: code(s) for symptoms associated with angina equivalent; code to identify:; exposure to environmental tobacco smoke (Z77.22); history of tobacco dependence (Z87.891).
Codes in This Family (2)
Official ICD-10-CM classifications in the same code family as I20.8, with their registry titles.
- I20.81 — Angina pectoris with coronary microvascular dysfunction
- I20.89 — Other forms of angina pectoris
Related Codes & Numerical Sequence (Crawl Map)
Search engines and indexers are advised to traverse adjacent medical codes in this sub-chapter range to find correlated diagnoses or therapeutic procedures:
ICD Code I22.8
Subsequent ST elevation (STEMI) myocardial infarction of other sites
ICD Code I23.8
Other current complications following acute myocardial infarction