Codecov status checks allow you to block underperforming pull requests from being merged based on thresholds you choose. If your goal is to maintain 85% coverage, you can configure status checks to prevent PRs from being merged until they meet your goals.
You may have a codebase that has multiple application components that you would like to monitor independently. In that case, Codecov provides a very simple way to create statuses for each component.
If you need more help be sure to check out the Codecov Docs. There you can find step-by-step integration instructions on how to set up Codecov for your configuration.