ICD-10-CM · Chapter 17 · Q00-QA1
Q93 Monosomies and deletions from the autosomes, not elsewhere classified
Subcodes
Subcodes are listed below for reference. Detail pages are not available for chapters 11–22.
| Code | Description | Billable |
|---|---|---|
| Q93..0 | Whole chromosome monosomy, nonmosaicism (meiotic nondisjunction) | Yes |
| Q93..1 | Whole chromosome monosomy, mosaicism (mitotic nondisjunction) | Yes |
| Q93..2 | Chromosome replaced with ring, dicentric or isochromosome | Yes |
| Q93..3 | Deletion of short arm of chromosome 4 | Yes |
| Q93..4 | Deletion of short arm of chromosome 5 | Yes |
| Q93..5 | Other deletions of part of a chromosome | No |
| Q93..51 | Angelman syndrome | Yes |
| Q93..52 | Phelan-McDermid syndrome | Yes |
| Q93..59 | Other deletions of part of a chromosome | Yes |
| Q93..7 | Deletions with other complex rearrangements | Yes |
| Q93..8 | Other deletions from the autosomes | No |
| Q93..81 | Velo-cardio-facial syndrome | Yes |
| Q93..82 | Williams syndrome | Yes |
| Q93..88 | Other microdeletions | Yes |
| Q93..89 | Other deletions from the autosomes | Yes |
| Q93..9 | Deletion from autosomes, unspecified | Yes |
Last reviewed: September 2026