If you're providing all the post-op care, then I'd try the mod 55 approach ... of course the surgeon who performed the procedure should have used the 54 modifier.
But if the patient had some post-op care by the surgeon, s/he probably didn't use the -54 modifier, so you won't be able to use the -55 modifier.
I would then bill the appropriate E/M service for this (that's a LOT of staples! ... doctor may want to record time and include prolonged service if it takes 30 minutes more than E/M level documented) Even if it's not over 30 minutes more than the E/M you can still use the -21 modifier for DOS in 2008.
F Tessa Bartels, CPC, CPC-E/M
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