| Q93 | Monosomies and deletions from the autosomes, not elsewhere classified | NON-BILLABLE CODE |
| Q93.0 | Whole chromosome monosomy, nonmosaicism (meiotic nondisjunction) | BILLABLE CODE |
| Q93.1 | Whole chromosome monosomy, mosaicism (mitotic nondisjunction) | BILLABLE CODE |
| Q93.2 | Chromosome replaced with ring, dicentric or isochromosome | BILLABLE CODE |
| Q93.3 | Deletion of short arm of chromosome 4 | BILLABLE CODE |
| Q93.5 | Other deletions of part of a chromosome | NON-BILLABLE CODE |
| Q93.51 | Angelman syndrome | BILLABLE CODE |
| Q93.52 | Phelan-McDermid syndrome | BILLABLE CODE |
| Q93.59 | Other deletions of part of a chromosome | BILLABLE CODE |
| Q93.7 | Deletions with other complex rearrangements | BILLABLE CODE |
| Q93.8 | Other deletions from the autosomes | NON-BILLABLE CODE |
| Q93.81 | Velo-cardio-facial syndrome | BILLABLE CODE |
| Q93.82 | Williams syndrome | BILLABLE CODE |
| Q93.88 | Other microdeletions | BILLABLE CODE |
| Q93.89 | Other deletions from the autosomes | BILLABLE CODE |
| Q93.9 | Deletion from autosomes, unspecified | BILLABLE CODE |
