Patient presents with symptoms suggestive of a non-ST-elevation myocardial infarction (NSTEMI), specifically a Type 2 NSTEMI.  The patient reports experiencing chest pain, described as pressure or tightness,  along with shortness of breath, diaphoresis, and nausea.  Cardiac risk factors include hypertension, hyperlipidemia, and a family history of coronary artery disease.  Initial electrocardiogram (ECG) shows T-wave inversions and ST segment depression consistent with myocardial ischemia.  Cardiac biomarkers, specifically troponin I and troponin T, are elevated, confirming myocardial injury.  Based on the clinical presentation, ECG findings, and elevated cardiac biomarkers, a diagnosis of Type 2 NSTEMI secondary to myocardial oxygen supply-demand imbalance is made.  Initial treatment includes aspirin, oxygen therapy, nitroglycerin, and beta-blockers.  Further management will involve anticoagulation therapy, consideration of coronary angiography and percutaneous coronary intervention (PCI), and ongoing assessment of cardiac function.  Differential diagnoses considered included unstable angina, acute coronary syndrome, and myocardial infarction.  The patient's condition is currently stable, and continuous cardiac monitoring is initiated.  Patient education regarding lifestyle modifications, medication adherence, and cardiac rehabilitation will be provided.  This Type 2 NSTEMI diagnosis necessitates appropriate ICD-10 coding (I21.A1) for accurate medical billing and healthcare reimbursement.