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ICD-10-CM Diagnosis Codes →
section notes
9. Diseases of the circulatory system (I00-I99) →
section notes
I20-I25 Ischemic heart diseases (I20-I25) →
section notes
I20 Angina pectoris →
section notes
I20.0   Unstable angina
I20.1   Angina pectoris with documented spasm
I20.2   Refractory angina pectoris
I20.81‑I20.89   I20.8 Other forms of angina pectoris
I20.9   Angina pectoris, unspecified
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