Q93.5Other deletions of part of a chromosome

Q93.5 is the ICD-10-CM diagnosis code for other deletions of part of a chromosome. It belongs to category Q93 (Monosomies and deletions from the autosomes, not elsewhere classified), block Q90-Q99 (chromosomal abnormalities, not elsewhere classified) and chapter 17 (congenital malformations, deformations, chromosomal abnormalities, and genetic disorders). It is a header code, so it can't be reported by itself; one of its 3 subcodes must be used instead.

Within Q93, choose Q93.5 (Other deletions of part of a chromosome) only when documentation doesn't support a more specific option: whole chromosome monosomy, nonmosaicism (meiotic nondisjunction) (Q93.0), whole chromosome monosomy, mosaicism (mitotic nondisjunction) (Q93.1), chromosome replaced with ring, dicentric or isochromosome (Q93.2), deletion of short arm of chromosome 4 (Q93.3), deletion of short arm of chromosome 5 (Q93.4), deletions with other complex rearrangements (Q93.7), other deletions from the autosomes (Q93.8) and deletion from autosomes, unspecified (Q93.9).

To report this condition, pick the subcode that matches the documentation: Q93.51 (syndrome), Q93.52 (syndrome) and Q93.59 (chromosome).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015, and changed in FY2019 (expanded into subcodes).

Before ICD-10, this condition was coded in ICD-9-CM as 758.39 (other autosomal deletions).