The XSAPT + MBD approach method starts from the charge-embedded XPol version of SAPT0(KS) but replaces the second-order dispersion energy (eq. 3) with a variant of the range-separated and self-consistently screened MBD (or "MBD@rsSCS") model developed by Tkatchenko and co-workers, although the original approach must be modified at short range for use with SAPT. For a dimer system, this completes the specification of the XSAPT + MBD method.