I believe it could easily be argued, and Scripturally supported, that all laws of the Church are extensions of just two laws, The greatest commandment to love God completely and the 2nd commandment to love our neighbor as ourself.
The ten commandments can each be regarded as applying to one of those two and all others commandments (at least all those that I can think of) can likewise be regarded as generally applying to one of those two commandments.
peace.
-Jim