A method for processing a video signal, of the present disclosure, comprising the steps of: parsing, from a bitstream, upper level merge with MVD (MMVD) activation information (sps_mmvd_enabled_flag) indicating whether the upper level MMVD including a current block is usable; parsing, from the bitstream, MMVD merge information (mmvd_merge_flag) indicating whether the MMVD is used in the current block, if the upper level MMVD activation information indicates the activation of the MMVD; parsing MMVD distance-related information (mmvd_distance_idx) and MMVD direction-related information (mmvd_direction_idx), if the MMVD merge information indicates that the MMVD is used in the current block; and obtaining MMVD information (mMvdLX) based on the MMVD distance-related information and the MMVD direction-related information, wherein the MMVD information is greater than or equal to −2{circumflex over ( )}17 and is less than or equal to 2{circumflex over ( )}17−1.