MDM does NOT have to be 1 of the 2 key components for an established patient visit (which requires 2 of 3 components to meet or exceed the requirements to bill for a level of service.)
I'm not sure where this "MDM must be 1 of the 2" rumor comes from, I've heard it a few times before. I've never heard of anybody requiring the MDM to be one of the 2. Of course, we all know that medical necessity must support the level of history an exam performed. M
ake no mistake -- Medical Decision Making IS NOT medical necessity! MDM is a matrix of check-boxes and grids that a very had-working panel came up with to attempt to quantify the cognitive labor that goes through a physician's mind when they are treating patients. It is fairly reliable, but it is not the be-all-end-all final say on what level of service was provided. Many coders and auditors are not clinicians, so it's not our place to arbitrarily decide which elements of the history or exam were medically necessary.
Let me give you an example to illustrate the point:
-Let's say a patient sees their oncologist for follow-up of their cancer. They have a 10-year history of cancer, and they have had reoccurence once before. Right now they are cancer-free but they have a check-up periodically to make sure there is no reoccurence. The oncologist documents a detailed interval history, and performs a detailed exam (like you would hope if you were the pt!) The MDM may calculate to low.
Diagnosis Points - Stable, established problem - 1 point
Data points - Order/review radiology tests - 1 point
Risk - One stable chronic problem - Low risk
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Straight-Forward Medical Decision Making Complexity
So in this case, we have a follow-up of cancer, the oncologist performed a detailed exam and documented a detailed history -- should we hold them to a level 2 service just because the patient ended up showing no signs of reoccurence of cancer?? I would say no- it is certainly medically necessary to perform a detailed history and exam, and a level 4 service is justified here.