When two or more diagnoses equally meet the definition for principal diagnosis, either one can be selected as the principal diagnosis.

Question

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According to coding guidelines from the Centers for Medicare and Medicaid Services (CMS), if two or more diagnoses meet the definition for principal diagnosis, either one can be selected as the principal diagnosis. However, the final selection should be based on the circumstances of the admission, the diagnostic workup and the healthcare provider's clinical judgment.

When Two or More Diagnoses Equally Meet the Definition for Principal