a partnership can not deduct partner health insurance - it is treated as a guaranteed payment. the additional income on the K-1 you pick up is offset by the deduction on your 1040 for SE health insurance (schedule 1 line 16). in addition 1/2 of all SE tax is deducted automatically by TT on schedule 1 line 14.
from instructions for form 1065:
Guaranteed payments are payments made by a partnership to a partner that are determined without regard to the partnership's income. Some examples of guaranteed payments to partners include:
Payments for salaries, health insurance, ....
