I'm currently waiting for surgery on my severe endometriosis and large ovarian cyst. I had surgery last year, I've had scans, I'm having a camera up the bum - the lot.
So it involves quite a few hospital appointments, as well as a few days off sick when my period is too painful or I'm bleeding too heavily. My line manager and colleagues all know what's going on and everyone has been brilliant.
But we have a new sickness recording system, which requires my manager to fill in the reason for sickness. In the past, we just filled in a form, and you could write what you wanted on there. Now, the new system has pre set categories and you have to pick one from a drop down list.
The categories cover a range of problems, so in the category which my sickness falls under, there is also stuff like 'Cystitis, Period problems, fertility problems, gynaecological etc'. But when listing past absences it abbreviates it so that only the first few ailments in the category are visible.
Consequently, my absence record looks like this:
UnGoogleable sick days:
day 1 "Cystitis...."
Day 2 "Cystitis...."
Day 3 "Cystitis...."
Day 3,4,5 "Cystitis...."
Day 6 "Cystitis...."
Day 7-28 "Cystitis..."
The problem is, this system also services our finance system, so the finance team also have access to it. As it's a new system we have had a lot of teething problems so there is a dedicated helpline with a team to help you through it - that team obviously also have full access to the system.
I told my line manager that while I'm fine for her to know what's going on, I'm not entirely comfortable with the entire HR and finance team to have full access to it, plus the way it's displayed makes it look like I have frequent days off for cystitis!
Line manager agreed, and said she would just record my sickness without a reason next to it from now on. We said that I wasn't comfortable with all the finance staff etc being able to access it and I was told that they're all bound by the same HR confidentiality rules so it's OK. But that doesn't stop me feeling uncomfortable with them all being able to see it! For example, I recently had to use the helpdesk to sort out a finance issue on the system with me. She was able to access my files and I had to sit there when she opened the above mentioned sick leave record in front of me 
Then today, I've had an email from someone in Payroll demanding to know the reason for my recent sickness. I find this a huge invasion of privacy and was tempted to give him the full details of my upcoming extensive gynaecological surgery for good measure!
Surely if I've told my LM the reason, and she's OKd it, then why does anyone else need to know the details? And
There's a deeper issue to this - once I'm done with my surgery, I'm likely to be referred for IVF. I haven't discussed this with work yet, but it will be very private and I really don't feel comfortable with that being plastered all over our system for all to see.
Can I refuse this? Is this a breach of my right to privacy?