RETURN_CODE	DESCRIPTION
00	Grouping successful
01	From or Through Date Error
02	Invalid Period Timing
03	Other principal diagnosis code error
05	Principal diagnosis not assigned to a clinical group
07	Invalid or inconsistent value for FUNCTIONAL IMPAIRMENT  HOSPITALIZATION RISK field
08	Invalid value for FUNCTIONAL IMPAIRMENT GROOMING field
09	Invalid value for FUNCTIONAL IMPAIRMENT DRESS UPPER field
10	Invalid value for FUNCTIONAL IMPAIRMENT DRESS LOWER field
11	Invalid value for FUNCTIONAL IMPAIRMENT BATHING field
12	Invalid value for FUNCTIONAL IMPAIRMENT TOILETING field
13	Invalid value for FUNCTIONAL IMPAIRMENT TRANSFERRING field
14	Invalid value for FUNCTIONAL IMPAIRMENT AMBULATION field
50	Fatal error - Component corrupted or not set up or other internal error
