The recode for same-sex spouse, SSPA, in the 2012 ACS PUMS data file included those same-sex spouses with valid reported data for both partners' relationship and sex. (The two categories for SSPA were "Spouse not changed" and "Spouse changed to unmarried partner.")

Beginning in 2013, the edit was changed to output same-sex married couples rather than changing their relationship to "unmarried partner." Starting with the 2013 ACS PUMS, the same-sex married couple household recode, SSMC, will include those couples in SSPA (SSMC=2 "All other same-sex married-couple households"), as well as those logically allocated as same-sex married couples (SSMC=1 "Same-sex married-couple household where not all relevant data shown as reported"), who were missing valid responses for either sex or relationship.