What is the appropriate code to use for a limited follow-up follicular transvaginal ultrasound? There is no established code for this. Should a 52 modifier be used if all the complete ultrasound measurements are not taken? What about a limited follow up transvaginal ultrasound?
Is it allowable to bill 89250 for the culture of embryos after thaw for a frozen embryo transfer (FET) cycle? Is there a certain time that the embryos must be in culture? The CPT code says <4 days.