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slash UK slash AI for people. The Justice Department is investigating United Health,

pulling down healthcare stocks. Plus, new data

shows the housing slump continues. Some economists may have been expecting that the sales decline

would be smaller because there's been an increase in inventory in the homes available for sale.

But really what we've seen is a lot of buyers are just deterred by these

current mortgage rates and the high prices. And one fast food chain's high-tech way of getting

you your sandwiches quicker. It's Friday, February 21st. I'm Alex Oslo for the Wall Street Journal.

This is the PM edition of What's News, the top headlines and business stories that move the world today.

We report exclusively that the Justice Department has launched an investigation into United Health Group's Medicare billing practices.

According to people familiar with the matter, the new civil fraud investigation is examining how the company recorded diagnoses that trigger extra payments to its Medicare Advantage plans.

Here to tell us more is Christopher Weaver, who covers U.S. healthcare companies for the journal.

Chris, break this down a little bit for us. What is the DOJ looking into?

Yeah, so what we know now is that attorneys for the DOJ's civil

division and at the U.S. Attorney's Office in Minnesota have questioned a number of medical

providers who either used to work for United or had contracts with the company.

About its practices for recording diagnoses for Medicare billing purposes. The way United's

Medicare Advantage plans work is they get paid basically a lump sum that goes up when people are

sicker, creating an incentive to add more diagnoses. And as the journal reported in December,

doctors working for United were adding such diagnoses at much higher than usual rates. And in some

cases, say they've experienced various forms of encouragement or even pressure to record diagnosis.

...