(Axios) – About $1.5 billion in annual Medicare payments to hospitals will be on the line Tuesday when the Supreme Court hears arguments in a case over whether the federal government shortchanges facilities that care for low-income seniors. Why it matters: It’s the latest legal skirmish over so-called disproportionate share payments that have steadily declined in recent years but are a lifeline for hospitals that treat a substantial number of poor patients, who typically are sicker and have more complex needs. (Read More)