ICD Code I25.110

ICD code I25.110 is a classification used to identify atherosclerotic heart disease of the native coronary artery accompanied by unstable angina pectoris. This code indicates that the patient has a condition where plaque builds up in the coronary arteries, which supply blood to the heart muscle, leading to reduced blood flow and chest pain or discomfort that occurs unpredictably and can signal an increased risk of a heart attack.

1. Presence of Atherosclerotic Heart Disease: Confirm the diagnosis of atherosclerotic heart disease affecting the native coronary arteries. This involves identifying the buildup of plaque within the coronary arteries, which can lead to reduced blood flow to the heart muscle.

2. Unstable Angina Pectoris Symptoms: Document symptoms indicative of unstable angina pectoris. These may include:

• Chest pain or discomfort that occurs at rest or with minimal exertion.
• Pain that is new in onset, more severe, or more frequent than previously experienced.
• Pain that may radiate to the shoulders, arms, neck, jaw, or back.
• Episodes of chest pain that last longer than usual or are not relieved by rest or nitroglycerin.

3. Clinical Evaluation: Conduct a thorough clinical evaluation, including a detailed patient history and physical examination, to assess the nature and severity of the angina symptoms.

4. Diagnostic Testing: Utilize appropriate diagnostic tests to support the diagnosis, such as:

• Electrocardiogram (ECG) to detect changes indicative of ischemia.
• Cardiac biomarkers to rule out myocardial infarction.
• Imaging studies, such as coronary angiography, to visualize the extent of atherosclerosis.

5. Exclusion of Other Conditions: Rule out other potential causes of chest pain, such as myocardial infarction, pericarditis, or pulmonary embolism, to confirm the diagnosis of unstable angina in the context of atherosclerotic heart disease.

6. Risk Assessment: Evaluate the patient's risk factors for coronary artery disease, including hypertension, hyperlipidemia, diabetes, smoking, and family history, to support the diagnosis and guide management.

By following these diagnostic criteria and documenting the presence of both atherosclerotic heart disease and unstable angina pectoris, healthcare providers can accurately use the ICD code in the patient's medical records.

For the ICD code I25.110, the relevant CPT codes that may be applicable include:

1. 92920 - Percutaneous transluminal coronary angioplasty (PTCA) of a single major coronary artery or branch.

2. 92928 - Percutaneous transcatheter placement of intracoronary stent(s), with coronary angioplasty when performed; single major coronary artery or branch.

3. 92941 - Percutaneous transluminal revascularization of acute total/subtotal occlusion during myocardial infarction, coronary artery or coronary artery bypass graft, any combination of intracoronary stent, atherectomy, and angioplasty, including aspiration thrombectomy when performed, single vessel.

4. 93454 - Catheterization of the coronary arteries for coronary angiography, including imaging supervision and interpretation.

5. 93571 - Intravascular Doppler velocity and/or pressure derived coronary flow reserve measurement (coronary vessel or graft) during coronary angiography including pharmacologically induced stress; initial vessel.

6. 93572 - Each additional vessel (List separately in addition to code for primary procedure).

These CPT codes are commonly associated with procedures that may be performed to treat conditions related to the ICD code I25.110. It is important for healthcare providers to verify the specific procedures performed and ensure accurate coding based on the services rendered.

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