<p>A descriptive cross-sectional study was conducted in Mekelle health facilities from May 22-27, 2024. We collected the data using an adapted semi-structured questionnaire by Kobo-collect. The study was conducted in 7 health facilities, and 70 case report forms (CRF) samples were calculated using a single population proportion formula, to evaluate data quality, timeliness, and validity. After ordering CRF chronologically every other CRF was selected. The HIV CS system attributes, core functions, and implementation status of HIV CS were measured from 100% based on the tools used.&nbsp;</p>