The goal of the health accounts project is to produce a new set of National Health Accounts which will explicitly measure health in addition to medical spending. To relate health outcomes to costs, the accounts will decompose both health and medical spending by particular diseases. Such accounts will allow researchers to ask such questions as: (1) How has the population's health changed over time? (2) To the extent health has improved, what accounts for this change? (3) What is the productivity of medical spending? (4) What changes in the medical system would increase the value of the system as a whole?