HSA Contribution showing as other income

My son is a recent college graduate that contributed to his HSA account in 2019.  In the personal information portion of Turbo Tax, he answered that he was at least a part-time student in 2019, and that someone else can claim him as a dependent, but they will not.  His HSA contribution of $800 in 2019 is showing as other income.  Since he is not listed as a dependent on his parents taxes, should the $800 HSA contribution show as other income on his return?