ICD-10-CM coding guidelines state that all documented conditions coexisting at the time of an encounter that require or affect patient care treatment or management must be coded as a diagnosis. As such, physicians must clearly and precisely document each diagnosis based on clinical medical record documentation from a face-to-face encounter, which means that diagnoses cannot be completely determined from test results and a patient’s past medical history.
For example, well-documented progress notes include the history of present illness, review of systems, and physical exam. They also detail the medical decision-making process. Each diagnosis must be documented in an assessment and care plan. To ensure this is the case, many organizations use the “MEAT” criteria—monitoring, evaluation, assessment, treatment—for their documentation practices, along with hierarchical condition category (HCC) assignments and ICD-10-CM diagnosis coding.
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