Max, age $28,$ is insured under an individual medical expense policy that is part of a preferred provider organization $($PPO$)$ network. The policy has a calendar$-$year deductible of $$1,000,\frac{75}{25}$ coinsurance, and an annual out$-$of$-$pocket limit of $$2,000.$ Max recently had outpatient arthroscopic surgery on his knee, which he injured in a skiing accident. The surgery was performed in an outpatient surgical center. Max incurred the following medical expenses. $($Assume that the charges shown are the charges approved by Max's insurer and that all providers are in the PPO network$)$

$\backslash$table$[[$Outpatient X$-$rays and diagnostic tests,$$800$