Limited Cardiac Echos

Is it correct to bill for a limited (follow up) echo with 93308, 93321 and 93325 all with modifier 26?

93308

Yes, the add-on codes can be separately reported with 93308. CPT add-on codes for spectral Doppler (+93320, +93321) and color flow Doppler (+93325) should no longer be reported with newly revised echocardiography CPT code 93307.