DGCAT 00M00 in the drg_logic table
2022-02-01 00:00
Mats Fernström, the National Board of Health and Welfare, Sweden 2022-02-01 (Swe ID C909) Cases with a principal diagnosis with DGCAT 00M00 are ungroupable or grouped to DRG Z71 ‘Huvuddiagnos ogiltig i NordDRG …’ (DRG 470 + rtc 8 ‘Principal diagnosis not applicable’ in Combined version). This is hardcoded in the grouper but not visible in the logic. To make the grouping logic more transparent we suggest that rules for DGCAT 00M00 are inserted in the table drg_logic. The rules should look like the existing rules with DGCAT 99M00 but with 00M00 instead of 99M00 in the field ‘dgcat’. See TC_C909 for details. The DRG change will be none. This is just a way to get rid of one of the “black holes” in NordDRG. Another way to make the grouping logic more transparent is to give DGCAT 99M00 to all codes with DGCAT 00M00 but then we will lose the information that originally was meant with DGCAT 00M00, namely that these codes have no other features than just DGCAT 00M00. At the same time, we should correct incorrect rtc codes in the rules with DGCAT 99M00. The code should be ‘8’ in all these rules. See TC_C909. During the work with this case, we noticed some missing Swedish DRGs for inpatients in primary care without a principal diagnosis or with a diagnosis with DGCAT 99M00. These DRGs and the rules for them must be inserted in the Swedish version 2023PL. See TC_C909.
