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Pulmonology Coding Alert

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Are Modifiers Required for PFTs?

Question: We’ve always reported 94640 with 94664, using modifier 59 on the nebulizer demonstration, and we have recently been getting denials. What went wrong? Kentucky Subscriber Answer: When you bill 94664 (Demonstration and/or evaluation of patient utilization of an aerosol generator, nebulizer, metered dose inhaler or IPPB device) along with 94640 (Pressurized or nonpressurized inhalation treatment for acute airway obstruction [...]

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