established pt e/m

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    Wiki Established patient codes (99211-15) vs Subseq hosp codes (99231-33) for outpt stay

    Question pertaining billing established patient codes versus subsequent hospital codes for an outpatient stay, POS 22: Why we would use E/M 99212-99215 with POS 22 instead of the subsequent observation care codes 99224-99226? Is there an advantage of using one set of codes over another, or...
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