Core Documentation Review
The record is the only evidence
Core documentation review means judging whether a note, on its face, supports the service billed. Every review passes three gates: is the entry dated and authenticated by an authorizing provider; does it describe a problem with enough clinical content to prove medical necessity; and are the elements present that the selected code requires? Attention to structure pays off - chief complaint, history of present illness, review of systems, past/family/social history, exam, and above all an assessment with a plan for each problem addressed.
Know which rule set applies. Office and outpatient E/M visits are selected under the 2021+ guidelines: medical decision making (problems addressed, data analyzed, risk) or total time on the date of service. Other E/M families and legacy settings still reference 1995/1997 concepts. Questions love to mix these.
Traps to expect: counting a problem-list entry the provider never addressed; accepting copy-forwarded text as a new history; treating a note dictated later but unsigned as complete; counting a diagnosis written as "possible," "rule out," or "suspected" - outpatient coding requires a confirmed diagnosis; crediting ancillary staff history where the setting does not allow it; and missing a correction or addendum that changes the story.
Rule of thumb: if it is not dated, authenticated, and written by the authorizing provider (or an authorized team member in a permitted setting) on or before the date of service, it did not happen. Read the note the way an appeals reviewer would - not the way the author's colleague would.