hsa

my husband contributed to his (family) hsa. has hdhp. Turned 65 in december and so medicare enrolled on Dec 1. W-4 codes hsa deductions as W - Employer contributions so not showing up on form 8889 , line 2 as employee contributions. Shows up on line 9, employer contributions. Problem seems twofold. Is he entitled to full years deduction or 11/12? Does company have the right code (W) and if so how do we get that onto line 2 on form 8889?