Obtaining the IWPUT
You are probably wondering, “How can I learn the IWPUT for the codes I use?” You probably do not want or need to other than to gain an understanding of how they have been misused. Purchase a subscription to the Resource-Based Relative Value Scale (RBRVS) DataManager Online or access the data for free through the CMS website (https://www.cms.gov/Medicare/Medicare-Fee-for-Service-Payment/PhysicianFeeSched/PFS-Federal-Regulation-Notices-Items/CMS-1654-P.html) by downloading the CY 2017 PFS Proposed Rule Addenda, which gives you total RVUs for all CPT codes, and the CY 2017 PFS Proposed Rule Physician Time, which gives you the preservice, intraservice, and postservice times for all CPT codes.
Using CPT code 11600 as an example, the total wRVU is 1.63, while preservice evaluation time is 10 minutes, intraservice time is 10 minutes, and immediate postservice time is 5 minutes. There is also 1 global follow-up visit, a CPT 99213, built in with a wRVU of 0.97 that determines the total value of the code. Using the IWPUT formula, we have the following: {1.63 – [(10 × 0.0224) + (5 × 0.0224) + 0.97]} / 10 = 0.0324.
These data also are useful if you are negotiating a contract based on RVUs, so learn a bit more about why you get paid what you are paid.
The Importance of IWPUT
Those interested in the academic discourse behind IWPUT should consult the literature,3,9 which is open source and freely available, but for now we will concentrate on why IWPUT is an important concept. As global periods are reevaluated under the Medicare Access and CHIP Reauthorization Act of 2015,10 the removal of global period visits will cause changes in the IWPUT value of codes, which will make them outliers and therefore targeted for resurvey and revaluation. The intent of the CMS is to cut reimbursement under our fee-for-service system, so there will be pain for physicians who have flourished under the current policy. To avoid inappropriate decreases in reimbursement, we should all keep accurate records of which global postoperative services are indeed provided, which leads us back to CPT code 99024. If it is not tracked, then it may not be seen as having been done. So be sure to use it.
Remember that if you do what you document, document what you do, and report medically necessary CPT codes, you should have nothing to worry about for now.