Health facility data are a critical input into assessing national progress and performance on an annual basis and they provide the basis for subnational/district performance assessment. This report assesses the quality of Cambodia’s health facility data collected through the health management information system (HMIS) for the period January to December 2012. The assessment focuses on four dimensions of quality and within each dimension, several indicators are used to track progress and assess the quality of the facility data generated by the HMIS, for both national level and for provinces