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Same-day admission and discharge isn't a one-size-fits-all code — and 99235 is the tier that gets the most second-guessing. This guide breaks down what actually separates 99235 from 99234 and 99236, how MDM and time-based selection work, the documentation that holds up, and where these claims tend to run into trouble.

Same-day admission and discharge isn't a one-size-fits-all code and 99235 is the tier that gets the most second-guessing. This guide breaks down what actually separates 99235 from 99234 and 99236, how MDM and time-based selection work, the documentation that holds up, and where these claims tend to run into trouble.

A patient gets admitted and discharged on the same calendar day, and the claim doesn't automatically know that. This guide breaks down CPT 99234 the 8-to-24-hour rule, the two-encounter requirement, MDM vs. time-based selection, how it compares to 99235 and 99236, and where these claims most often run into denials.