3. Verification of sickness under Section 14 F. 2. is required when:
42 a. a pilot has used more than 100 hours of unverified sick leave in a sick leave year,
43 or
44 b. a pilot has been absent on a single sick occurrence for 15 or more than seven
45 consecutive days.
Section 14 – Sick Leave
14-10
1 4. When individual circumstances exist that give the Company a good faith basis to
2 inquire regarding the medical reason for a pilot’s use of sick leave, such pilot is
3 notmay be required to state the nature of his sickness to Crew Scheduling. He may be
4 required to describe his sicknessillness in general terms to his Chief Pilot. Following
5 such discussion, the Chief Pilot may:
6 a. consider the current sick leave occurrence to be verified, or
7 b. require verification of sickness from the pilot under Section 14 F. 2.
8 Note: Such individual circumstances may not be derived solely from the amount of
9 sick leave used by the pilot or the frequency of his sick occurrences.
10 5. In the event the Company requires a doctor’s certificate for verification, a pilot may
11 submit a reimbursement claim through DBMS for any reasonable expense incurred
12 in obtaining such verification.

I personally don't see all the fuss in this. I would expect that such usage highlighted above would most probably already be seeing a Dr. anyway. In the end, if they're requiring the verification, then it appears DAL still has to reimburse you for the Dr. appointment.