The highest rank that a CSS (Central Superior Services) officer can achieve in Pakistan is "Grade 22." Grade 22 is the highest administrative grade in the civil service hierarchy. It is reserved for top-level positions and is associated with significant responsibilities and decision-making authority. Officers in Grade 22 often hold key leadership positions in government departments and agencies, such as federal secretaries, chief secretaries, or heads of autonomous bodies. These positions involve formulating policies, managing major projects, and overseeing the implementation of government initiatives. Attaining the rank of Grade 22 is considered a prestigious achievement in the CSS career, representing years of experience, expertise, and dedication to public service.