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 2026, 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.
Tetraploidy
The presence of four sets of chromosomes. It is associated with ABNORMALITIES, MULTIPLE; and MISCARRAGES.
About the Q92 Code Range
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.
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, 2025 through September 30, 2026. 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 2026 ICD-10-CM Tabular List and order file, effective October 1, 2025 through September 30, 2026.
