If, at the end of 2023, you were age 55 or older and married, use the Additional
Contribution Amount Worksheet if both of the following apply.
- You or your spouse had family coverage under an HDHP and were, or were considered to be, an eligible individual on the first day of the month.
- You were not enrolled in Medicare for the month.
If, at the end of 2023, you were age 55 or older and unmarried or married with self-only HDHP coverage for the entire year, do not make an entry here. Instead use the entry for line 3 ("If you changed your coverage during the tax year, follow the instructions on the Form 8889 Line 3 Limitation Worksheet to determine this amount").