CAMBODIA – CRIMINAL PROCEDURE CODE
BOOK 8 EXECUTION PROCEDURES
TITLE 2 - EXECUTION OF PRE-TRIAL DETENTION AND PUNISHMENT DEPRIVING LIBERTY
CHAPTER 1 - Rules governing Detention
Article 503. Inclusion of the Duration of Pre-trial Detention
The duration of a pre-trial detention shall be wholly included in the sentence which has been declared or eventually the total duration of sentence to be imposed after combining all sentences.
Reduction of national sentence following pre-trial detention - national proceedings
EDIT.