We establish the classification of minimal mass blow-up solutions of the
\({L^{2}}\) critical inhomogeneous nonlinear Schrödinger equation
$$i\partial_t u + \Delta u + |x|^{-b}|u|^{\frac{4-2b}{N}}u = 0,$$
thereby extending the celebrated result of Merle (Duke Math J 69(2):427–454,
1993) from the classic case
\({b=0}\) to the case
\({0< b< {\rm min} \{2,N\} }\), in any dimension
\({N \geqslant 1}\).