@SaintMichael, I don't really know. I'm the only one I know of who has had this, but both doctors (@work GP and ortho) said it can be caused by chronic trauma. I do work at a desk; I don't lift weights, and I only play tennis a few times a year.
@ltt, the GP referred me to an ortho, the ortho said I could do drainage and cortisone shots if I wanted but in his experience that really just delayed the inevitable surgery. He also said I could just try to live with it, but that everyone eventually comes back and asks for the surgery. He also said that cortisone shots / drainages had a 5% incidence of infection.
@WhoopWhoop, thanks...my company has offices in CA and around the world, so I'm not sure whose rules they follow. Could be CA, could be ID.
@MDM, there's already a 2 inch egg-foam pad on my chair's armrest! (I put it there) Believe me, it's not really worth the pain to get "free" surgery. If I do get the surgery, it's like 1 day off from work for the day of, but then doc says and I plan to work the next day and through the recovery period. I have a desk job anyway, the heaviest thing I lift is a pen.
@iowajes, yeah, I don't really know. I switched into a manager job about 3 months ago and the only thing I can figure is that I started leaning on my elbow more because I'm in phone meetings a lot. The pain started about 6 weeks ago, so the timing fits. But I am not really sure either.
@jba302, thanks. That's what I sort of thought about the conservative treatment first. I am healthy otherwise. This would be my first claim in my life after working for about 25 years, and since I'm FI/OMY I am nearly certain it will be my only one.
A couple of other things...
It doesn't really seem like it would cost my employer that much more, since they'd be paying for most of it via the regular insurance vs paying for all of it via worker's comp. As I alluded to above, I don't really think I need anything more than that (I don't need time off, or accommodations, or change of job or anything like that.)
I did talk with both the GP and the ortho. In both cases, we discussed the possibility of it being a work thing, and I said I wasn't sure. In both cases I did fill out paperwork and checked the "No" box as to if it was work-related, because I wasn't sure and didn't want to be a bother. But the ortho said that in his opinion it was a chronic (like an ergonomic) type if injury since I know I didn't bump it against a wall or fall or anything. I don't know how much that might be an issue.
Honestly, I would like to take the approach that I'll talk to my work about it and see what they think. If they don't think it is, then I'm fine with it. If they think it is, I'm fine with that too. I'm willing to let them have some input on treatment if they're paying and it seems reasonable. If they want to go with five cortisone shots over one year or want to hire an intern orthopedist to do the surgery, then I'll say, "Thanks, even though it was work related I'll go my own way on this one."