Can my students sit IGCSE (9-1) ICT 0983 in the same series as IGCSE (9-1) Computer Science 0984?

Yes, candidates can sit both Cambridge IGCSE (9-1) ICT and Cambridge IGCSE (9-1) Computer Science in the same series, there are no restrictions. You can check whether Cambridge IGCSE (9-1) Computer Science 0984 has a restriction in Section 5, the Combining with other syllabus sub-section in the 2023-2025 syllabus here.