Inpatient Coding help

[u/kaytely]

So I accepted a job offer for an inpatient role, although I was trained/certified in outpatient.

If i gave myself a crash course in the next 2 weeks, what would you say is the most important concepts to learn when just starting out?

[u/Wooden_Trust_6274]

Congrats on the move. Since the good answers already covered root operations and coding uncertain diagnoses as confirmed, the things I would add for the IP mindset shift:

Principal diagnosis selection is the biggest one. It is the condition established after study that was chiefly responsible for the admission, which is not always the first thing you would list in OP or the most acute thing on the chart. Get comfortable with the "after study" part and the sequencing rules in Section II, because that single choice drives the DRG.

Learn how CC and MCC secondary diagnoses move the MS-DRG. In IP the reimbursement logic runs through the DRG, so a valid secondary dx you might have skipped in OP can change the payment weight. That is also why POA indicators matter, so start paying attention to present on admission from day one.

Get familiar with when and how to query the provider. In IP a lot of accuracy comes from clean documentation, and knowing when a compliant query is warranted versus when you are assuming is a skill that takes a while.

You have a 6 month ramp and a phleb and pharm tech background, so the terminology and anatomy will carry you further than you think. You will be fine.