Preventive Health Savings Act This bill requires the Congressional Budget Office (CBO), upon receiving a request from Congress, to determine if proposed legislation would reduce spending outside of the 10-year budget window through the use of preventive health and preventive health services. If CBO determines that the legislation would result in substantial spending reductions from the use of preventive health and preventive health services, a description and estimate of the spending reductions must be included in CBO projections.