(iv) The DOL, HHS, and Treasury shall jointly examine the impact of the suspension in (ii) and whether it delays payment determinations or impatcs early, alternative resolutoin of claims (such as thorugh open negotiations), and shall submit to Congress, not later than 2 years after the effective date of (ii), an interim report (and within 4 years, a final report) on whether any GHPs/GHCs have a pattern or practice of routine denial, low payment, or down-coding of claims, or otherwise abuse the 90-day period described in such clause, including recommendations on ways to discourage such a pattern or practice.