The ACA was upheld in its entirety by the Supreme Court.
Almost correct. The ACA's individual mandate and its penalty was upheld as a valid exercise of Congress' Taxing and Spending powers, but the Medicaid expansion was declared unconstitutionally coercive.
Here is a penalty flowchart:
http://healthreform.kff.org/the-basics/requirement-to-buy-coverage-flowchart.aspx