The article that I am referencing was regarding an epidemic in catheter billing fraud to Medicare that has affected over 450,000 beneficiaries, and those are only the ones that have been reported. It is suspected that it is similar to an issue that happened in 2020 where there was a fraud case brought against another company for billing Medicare for Covid tests that were never sent out. What is the main subject of the article?
1) Catheter billing fraud
2) Medicare beneficiaries
3) Fraud case in 2020
4) Covid tests billing