ICD-10-CM code · FY2027
I20.9 Angina pectoris, unspecified
BillableValid for claims as a specific diagnosis code
About I20.9
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Coding notes for I20.9
Applicable to Other names for conditions reported with this code.
- Angina NOS
- Anginal syndrome
- Cardiac angina
- Ischemic chest pain
Also applies, from I20 Angina pectoris
Excludes1 Not coded here: never report these together with this code (use the code given instead).
Use additional code Add a second code for the detail named here.
Block I20-I25 notes (apply to every code in it)
Chapter 9 notes (apply to every code in it)
Excludes2 Not part of this condition, but a patient can have both: report both codes when both apply.
- certain conditions originating in the perinatal period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
- endocrine, nutritional and metabolic diseases (E00-E88)
- injury, poisoning and certain other consequences of external causes (S00-T88)
- neoplasms (C00-D49)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
- systemic connective tissue disorders (M30-M36)
- transient cerebral ischemic attacks and related syndromes (G45.-)
Related codes in I20
Latest research on angina
- #VisualAbstract: Coronary CT Angiography-Guided Care Reduced Heart Disease death After 10 Years in Patients with Stable Chest Pain
- Percutaneous coronary intervention associated with decreased stable angina symptoms
- #VisualAbstract: A Placebo-Controlled Trial of Percutaneous Coronary Intervention for Stable Angina
- The CorMicA Trial: Medical therapy guided by invasive coronary function testing offers symptomatic improvement of angina for patients with nonobstructive coronary artery disease
- Elevated low-density lipoprotein cholesterol is a risk factor for atherosclerotic disease irrespective of familial hypercholesterolemia status
Landmark trials from 2MM Classics
- The ROMICAT 2 trial: Coronary computed tomographic angiography shortens hospital stays for acute chest pain [Classics Series]
- The ROMICAT 1 trial: Coronary computed tomographic angiography highly sensitive for acute coronary syndrome in patients with acute chest pain [Classics Series]
- REDUCE-IT Trial: Cardiovascular Risk Reduction with Icosapent Ethyl for Hypertriglyceridemia [Classics Series]
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See 2MM+ plansICD-10-CM FY2027 code set, as published by the CDC National Center for Health Statistics (NCHS) and CMS, effective October 1, 2026 to September 30, 2027. Codes, titles and notes are shown as published. Check payer rules and the official guidelines before billing. This page is not medical advice.
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