Other trisomies and partial trisomies of the autosomes, not elsewhere classified (Q92) ICD-10-CM
The Q92 code range covers other trisomies and partial trisomies of the autosomes, not elsewhere classified with 11 ICD-10-CM diagnosis codes. 9 of them are billable and valid for claim submission in fiscal year 2027, and the category headers group them but cannot themselves be billed.
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.
Codes in the Q92 Range 11 codes · 9 billable
- Q92 Other trisomies and partial trisomies of the autosomes, not elsewhere classifiedNon-billable
- 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 chromosomesNon-billable
- 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
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the Q92 range.
Polyploidy
The chromosomal constitution of a cell containing multiples of the normal number of CHROMOSOMES; includes triploidy (symbol: 3N), tetraploidy (symbol: 4N), etc.
Triploidy
Polyploidy with three sets of chromosomes. Triploidy in humans are 69XXX, 69XXY, and 69XYY. It is associated with HOLOPROSENCEPHALY; ABNORMALITIES, MULTIPLE; PARTIAL HYDATIDIFORM MOLE; and MISCARRAGES.
Trisomy
The possession of a third chromosome of any one type in an otherwise diploid cell.
About the Q92 Code Range
These chromosome abnormalities involve trisomies of whole autosomes or parts of autosomes. Autosomes are chromosomes other than sex chromosomes.
Q92.0 and Q92.1 separate nonmosaic and mosaic whole-chromosome trisomy. Q92.2 identifies partial trisomy, while Q92.5 identifies duplications with other complex rearrangements. Marker chromosomes fall under Q92.6, with subdivisions for a normal or abnormal individual. Q92.7 identifies triploidy and polyploidy. The remaining subdivisions identify other specified or unspecified trisomies and partial trisomies of autosomes.
Questions About This Page
How many billable codes are in the Q92 range?
Of the 11 codes in this range, 9 are billable and valid for claim submission from October 1, 2026 through September 30, 2027. Category header codes group them but cannot be reported on claims.
What does the Q92 range classify?
The range classifies other trisomies and partial trisomies of the autosomes, not elsewhere classified. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2027 ICD-10-CM Tabular List and order file, effective October 1, 2026 through September 30, 2027.
