Researchers are utilizing advanced diagnostic methods, including whole-genome sequencing, to characterize and identify mycobacterium isolates, particularly those from the Mycobacterium abscessus complex. The use of genomics and artificial intelligence is aiding in the diagnosis of nontuberculous mycobacterial infections and revealing significant genomic diversity among strains. Studies are shedding light on the complexity of these infections and the potential for new methods to improve species and subspecies identification.