HHNUMMN (MV002) is the number identifying the household in which the male respondent was interviewed, within each men's sample.
To identify unique households in most samples, researchers must use HHNUMMN with CLUSTERNOMN (MV001).
For most samples, HHNUMMN (MV002) and CLUSTERNOMN (MV001) can be used to merge IPUMS-DHS data from the men's file to DHS Household Recode files, to incorporate household variables not yet available in the IPUMS-DHS. However, in some household files, HHNUM (V002) and CLUSTERNO (V001) do not uniquely identify households in the DHS Household Recode file.
For information about the IPUMS-DHS samples where HHNUM and CLUSTERNO are not sufficient to uniquely identify households, and for guidance on what further steps to take for linking files in such cases, please consult the User Note on Linking. [URL omitted from DDI.]