Modifiers: Approved List (modif app) - Medi-Cal

33* Preventive service Claims billed using modifier 33 are not subject to specific ICD-10-CM inclusion and/or exclusion criteria. Use of modifier 33 indicates the service was provided in accordance with a U.S. Preventive Services Task Force A or B recommendation. ... (used to identify procedures performed on the left side of the body) NB ... ................
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