Which of the following is correct? a. when the heart expands, it fills with air from the atmosphere. b. when the lungs contract, they fill with air from the atmosphere. c. when the lungs expand, they fill with air from the atmosphere. d. when the heart contracts, it fills with air from the atmosphere.

17. susie jones is in the office today to see her regular physician for her 5 year well child check. she is getting ready to start school in a month and needs to have her immunizations updated. what modifier will be used with the preventative service code? explain why the modifier is required for reimbursed of both the well child check and the immunizations