Human Resources - Retiree Benefits

Administration Division

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Catastrophic Health Reimbursement Account (CatHRA)

Retirees with an extremely high usage of prescription drugs may reach the Medicare Part D catastrophic coverage limit. To help these retirees, USG has created a special program called the Catastrophic Health Reimbursement Account (HRA).

How does the Catastrophic HRA work?

Beginning January 1, 2016, USG began offering the Catastrophic HRA (CatHRA) as a reimbursement account for reimbursing retirees for the full amount of any Medicare Part D co-payment and coinsurance expenses incurred in the catastrophic phase of coverage for prescription drugs covered under Medicare Part D.

What You Should Know About the USG Retiree Catastrophic HRA

In addition to a Health Reimbursement Account, you also have access to a Catastrophic Prescription Drug Benefit. This plan offers coverage to retirees who reach the catastrophic coverage stage of their Medicare Part D program, and reimburses them for out-of-pocket prescription expenses. The account can only be used for prescription expenses incurred after reaching the catastrophic benefit stage, and coverage continues through the end of the calendar year.

Who is Eligible for the Plan?

All retirees and eligible dependents that reach the catastrophic coverage stage under their Medicare Part D program are eligible for the plan.

How Do I Activate the Account?

Before submitting any claims, an account must for be opened for you. The activation form is available on the Your Spending Account (YSA) website or by calling Aon Retiree Health Exchange. You will need to complete the form and provide you Medicare Part D Summary from your carrier showing that you have reached the catastrophic coverage phase.

After confirming you’ve reached the catastrophic coverage stage of your plan, an account will be created for you. You can then submit claims for your out-of-pocket prescription costs incurred from the date you met the catastrophic coverage stage through the end of the year. Claims incurred during your eligibility period must be submitted to YSA by March 31st of the following year.

Did You Know?

Because your Medicare limits reset each year, you will need to submit a new activation form annually.

How Do I Receive Reimbursement?

After your account is activated, eligible prescription expenses can be submitted online via the YSA website. Additionally, a paper claim form is available for download on the YSA website or by calling Aon Retiree Health Exchange. With each claim form, you’ll need to provide documentation substantiating the amount.

What should I do if I reach the catastrophic coverage limit?

If you or your covered spouse reaches the catastrophic coverage limit, your Medicare Part D insurance company you are enrolled with through the Aon Retiree Health Exchange will send you a Medicare Part D Monthly Prescription Drug Summary statement showing you have reached the catastrophic coverage limit. You will need to review this statement each month, so that you are aware of which drug coverage phase you are currently in.


  • Save the Medicare Part D Monthly Prescription Drug Summary statement
  • Contact your Aon Retiree Health Exchange Benefits Advisor immediately to access Catastrophic HRA support

Remember, an Aon Benefits Advisor is available to help you with your health care questions and concerns. Call the Aon Retiree Health Exchange at 1-866-212-5052 and ask to speak with a licensed Benefits Advisor.

How does a retiree move through the Medicare Part D Prescription Drug Phases?

CATHRA Drug Coverage flow chart.

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