I work in PT and we have found that these denials are related to bundling. We have tried everything from appealing them after the claims process, sending in notes with the claims on paper and even with these steps are only occasionally successful in getting those codes paid and it sometimes took months and months of follow up or a response back from the plan with very few denials being over turned anyways. We even got our network contracting company involved and were initially told this was a known issue and would be corrected but eventually nothing panned out and we had no success going that route either. Even the times a bundled code would go through and pay, Humana will eventually end up recouping it for no documentation to support the code. Finally what we did was just add a billing rule to our system so that the code 97530(theraputic activity) would not go out on our claims for this specific payer or if it was billed and denied we would just write it off and created a special adj code for this. They also bundle 97002 and 97004 (re-evals), those codes we do not restrict billing for because we have to do re-evals periodically however we generally just end up adjusting them as appealing is not usually worth the time and effort with the large amount of claims we have. Obviously I don't feel we should have to do this but we just haven't found a successful way for them to review our documentation in order to appeal the bundling denials and it was not worth it.