Chronic Disease Flexible Coverage ActThis bill provides statutory authority for guidance from the Internal Revenue Service (IRS) that expands the types of preventive care that may be offered under a high deductible health plan (HDHP) without requiring a deductible or with a deductible below the minimum threshold.Under current law, to be considered health savings account-eligible, an HDHP must have a deductible above a certain minimum threshold amount, which is adjusted annually. However, an HDHP may cover certain types of preventive care without requiring a deductible or with a deductible below the minimum threshold. The IRS issued guidance expanding the types of preventive care that may be covered by an HDHP without requiring a deductible or with a deductible below the minimum threshold to includeangiotensin converting enzyme inhibitors for individuals with congestive heart failure, diabetes, or coronary artery disease;anti-resorptive therapy for individuals with osteoporosis or osteopenia;beta-blockers for individuals with congestive heart failure or coronary artery disease;blood pressure monitors for individuals with hypertension;inhaled corticosteroids and peak flow meters for individuals with asthma;insulin and other glucose lowering agents, retinopathy screening, glucometers, and hemoglobin A1c testing for individuals with diabetes;international normalized ratio testing for individuals with liver disease or bleeding disorders;low-density lipoprotein testing for individuals with heart disease;statins for individuals with heart disease or diabetes; andselective serotonin reuptake inhibitors for individuals with depression. The bill provides statutory authority for the IRS's guidance.