Q92.6Marker chromosomes

Q92.6 is the ICD-10-CM diagnosis code for marker chromosomes. It belongs to category Q92 (other trisomies and partial trisomies of 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 2 subcodes must be used instead.

Within Q92 (other trisomies and partial trisomies of the autosomes, not elsewhere classified), Q92.6 is specifically for marker chromosomes. Related codes cover whole chromosome trisomy, nonmosaicism (meiotic nondisjunction) (Q92.0), whole chromosome trisomy, mosaicism (mitotic nondisjunction) (Q92.1), partial trisomy (Q92.2), Duplications with other complex rearrangements (Q92.5), Triploidy and polyploidy (Q92.7), other specified trisomies and partial trisomies of autosomes (Q92.8) and trisomy and partial trisomy of autosomes, unspecified (Q92.9).

To report this condition, pick the subcode that matches the documentation: Q92.61 (in normal individual) and Q92.62 (in abnormal individual).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.