From OpenStreetMap Wiki
|Used on these elements|
|Tools for this tag|
A key for diaper changing tables or separated rooms include a diaper changing table; in combination with toilets, shops, restaurants, service areas or something like that.
|diaper=yes||for existing diaper changing table|
|diaper=1 (2...)||for a known number of diaper changing tables|
|diaper=bench||for a bench present in a toilet that can be used for changing|
|diaper=room||for a separated room include a diaper changing table|