Other trisomies and partial trisomies of the autosomes, not elsewhere classified (Q92)
ICD-10 code Q92 covers various other trisomies and partial trisomies of autosomes that are not classified elsewhere. These codes are used to identify specific types of chromosomal abnormalities involving extra copies or duplications of autosomes, which are chromosomes other than sex chromosomes.
The section includes codes for whole chromosome trisomies such as Q92.0 for nonmosaicism caused by meiotic nondisjunction, and Q92.1 for mosaicism due to mitotic nondisjunction, covering conditions like mosaic trisomy 10, 12, and 22 syndromes. Q92.2 refers to partial trisomies involving duplications of chromosome segments, with many recognized syndromes such as 13q partial trisomy and 8q partial trisomy. Complex rearrangements with duplications fall under Q92.5, while marker chromosomes are coded in Q92.6 series. Q92.7 addresses triploidy and polyploidy cases. Other specified trisomies and partial trisomies have dedicated codes like Q92.8, and unspecified cases are under Q92.9. These codes aid medical coders in accurately describing chromosomal duplication variants when assigning diagnosis for genetic and congenital disorders.
Congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
Chromosomal abnormalities, not elsewhere classified (Q90-Q99)
Q92 Other trisomies and partial trisomies of the autosomes, not elsewhere classified
- Q92.0 Whole chromosome trisomy, nonmosaicism (meiotic nondisjunction)
- Q92.1 Whole chromosome trisomy, mosaicism (mitotic nondisjunction)
- Q92.2 Partial trisomy
- Q92.5 Duplications with other complex rearrangements
Q92.6 Marker chromosomes
- Q92.61 Marker chromosomes in normal individual
- Q92.62 Marker chromosomes in abnormal individual
- Q92.7 Triploidy and polyploidy
- Q92.8 Other specified trisomies and partial trisomies of autosomes
- Q92.9 Trisomy and partial trisomy of autosomes, unspecified
Other trisomies and partial trisomies of the autosomes, not elsewhere classified (Q92)
Instructional Notations
Includes
This note appears immediately under a three character code title to further define, or give examples of, the content of the category.
- unbalanced translocations and insertions
Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
Clinical Terms
The following clinical terms provide additional context, helping users better understand the clinical background and common associations for each diagnosis listed in this section. Including related terms alongside ICD-10-CM codes supports coders, billers, and healthcare professionals in improving accuracy, enhancing documentation, and facilitating research or patient education.
Tetraploidy
The presence of four sets of chromosomes. It is associated with ABNORMALITIES, MULTIPLE; and MISCARRAGES.
