Operational handbook on tuberculosis. Module 4: Treatment of drug-resistant tuberculosis treatment, is a derivative product arising from the guideline on the same topic. This operational handbook is designed to facilitate implementation of the policy at country level. The target audience includes, implementing partners, programme managers, clinicians and other stakeholders engaged in TB care. The 2022 updated version of the operational handbook includes a new section stemming from the most recent round of guidelines development – the recommendation for 6-month regimen, and a new composition of the 9-month regimen for the treatment of DR-TB. Besides, the updated operational handbook includes three new web annexes: Tuberculosis medicines information sheets, management of adverse events and Active TB drug safety monitoring and management (aDSM).