The Bassa Vah block spans U+16AD0–U+16AFF, 48 codepoints in Plane 1 (Supplementary Multilingual Plane). 36 are assigned in Unicode 16.0; the other 12 are reserved for future characters.
All of its characters belong to the Bassa Vah script.
By general category: 30 other letters (Lo), 5 non-spacing marks (Mn), 1 other punctuation (Po).
The first 36 arrived in Unicode 7.0 (2014).
Because it lies outside the BMP, every character here takes four bytes in UTF-8 and a surrogate pair in UTF-16.