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    v1.0.28
    OpenPayerBilling CodesIschemic heart diseasesICD-10-CM i25-chronic-ischemic-heart-disease
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    ICD-10-CM Code For Chronic Ischemic Heart Disease: Group Overview

    The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group I25 includes chronic ischemic heart disease diagnoses such as old myocardial infarction sequelae, chronic ischemic cardiomyopathy, and coronary atherosclerosis affecting native coronary arteries and grafts. These ICD-10-CM diagnosis codes are used to document long-standing coronary artery disease and its sequelae, capturing chronicity, prior infarction, and native or graft vessel involvement relevant to cardiac function. Accurate coding within the ICD-10-CM I25 group supports proper claim adjudication / complete clinical documentation / appropriate reimbursement.

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    ICD-10-CM I25: Chronic Ischemic Heart Disease Overview

    The diagnoses in this group represent chronic ischemic conditions of the heart, including old myocardial infarction sequelae, coronary atherosclerosis, and chronic coronary artery disease affecting myocardial perfusion. These conditions target the cardiovascular system and often reflect long-term coronary artery disease and its complications. Accurate coding matters for reimbursement because it ties clinical documentation to the specific ischemic heart disease diagnosis and supports correct claim adjudication.

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    When to Use

    Use a code from this group when clinical documentation indicates chronic coronary artery disease, prior myocardial infarction with sequelae, or chronic ischemic cardiomyopathy rather than an acute ischemic event. Select the specific code that reflects vessel type, graft status, and any documented sequelae to align with the clinical record.

    ICD-10-CM Codes

    56 rows

    ICD-10-CM CodeDescription
    I25.10Atherosclerotic heart disease of native coronary artery without angina pectoris
    I25.110Atherosclerotic heart disease of native coronary artery with unstable angina pectoris
    I25.111Atherosclerotic heart disease of native coronary artery with angina pectoris with documented spasm
    I25.112Atherosclerotic heart disease of native coronary artery with refractory angina pectoris
    I25.118Atherosclerotic heart disease of native coronary artery with other forms of angina pectoris
    I25.119Atherosclerotic heart disease of native coronary artery with unspecified angina pectoris
    I25.2Old myocardial infarction
    I25.3Aneurysm of heart
    I25.41Coronary artery aneurysm
    I25.42Coronary artery dissection
    I25.5Ischemic cardiomyopathy
    I25.6Silent myocardial ischemia
    I25.700Atherosclerosis of coronary artery bypass graft(s), unspecified, with unstable angina pectoris
    I25.701Atherosclerosis of coronary artery bypass graft(s), unspecified, with angina pectoris with documented spasm
    I25.702Atherosclerosis of coronary artery bypass graft(s), unspecified, with refractory angina pectoris
    I25.708Atherosclerosis of coronary artery bypass graft(s), unspecified, with other forms of angina pectoris
    I25.709Atherosclerosis of coronary artery bypass graft(s), unspecified, with unspecified angina pectoris
    I25.710Atherosclerosis of autologous vein coronary artery bypass graft(s) with unstable angina pectoris
    I25.711Atherosclerosis of autologous vein coronary artery bypass graft(s) with angina pectoris with documented spasm
    I25.712Atherosclerosis of autologous vein coronary artery bypass graft(s) with refractory angina pectoris

    Showing 1–20 of 56

    DRG Codes

    7 rows

    DRG CodeDescription
    302Atherosclerosis with MCC
    303Atherosclerosis without MCC
    314Other Circulatory System Diagnoses with MCC
    315Other Circulatory System Diagnoses with CC
    316Other Circulatory System Diagnoses without CC/MCC
    791Prematurity with Major Problems
    793Full Term Neonate with Major Problems

    Typical Clinical Scenarios

    • An older adult with chronic chest pressure on exertion and known coronary artery disease presents for routine follow-up and medication management; stress testing shows fixed ischemia and the clinician documents stable angina due to prior myocardial ischemia rather than acute infarction. A chronic ischemic heart disease code is assigned to capture long-standing coronary atherosclerotic disease without current acute ischemia. Typical codes: I25.10, I25.110.
    • A middle-aged patient arrives to the emergency department with increasing dyspnea and lower extremity edema weeks after a remote myocardial infarction; evaluation attributes symptoms to ischemic cardiomyopathy with reduced ejection fraction and heart failure symptoms. A code from this group is used to indicate chronic ischemic heart disease as the underlying etiology contributing to the cardiomyopathy and heart failure. Typical codes: I25.5, I25.6.
    • A patient with history of prior coronary stent placement is seen for evaluation of recurrent angina and is found to have in-stent restenosis on coronary angiography; the encounter documents chronic ischemic coronary disease with recurrent angina due to restenosis rather than an acute coronary syndrome. A chronic ischemic heart disease code is assigned to reflect the ongoing ischemic coronary condition and prior revascularization status. Typical codes: I25.110, I25.119.

    Related Codes

    I20-ANGINA-PECTORIS

    ICD-10-CM Code For Angina Pectoris: Group Overview

    I21-ACUTE-MYOCARDIAL-INFARCTION

    ICD-10-CM Code For Acute Myocardial Infarction: Group Overview

    I22-SUBSEQUENT-MYOCARDIAL-INFARCTION

    ICD-10-CM Code For Subsequent ST Elevation (STEMI) And Non-ST Elevation (NSTEMI) Myocardial Infarction: Group Overview

    I23-CERTAIN-CURRENT-COMPLICATIONS-FOLLOWING-MYOCARDIAL-INFARCTION

    ICD-10-CM Code For Certain Current Complications Following STEMI And NSTEMI: Group Overview

    I24-OTHER-ACUTE-ISCHEMIC-HEART-DISEASES

    ICD-10-CM Code For Other Acute Ischemic Heart Diseases: Group Overview

    Frequently Asked Questions

    References

    1. 1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
    2. 2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
    3. 3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.
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