Q92.2 vs Q92.5
Q92.2 and Q92.5 can never be reported together. ICD-10-CM declares them mutually exclusive with an Excludes1 note, meaning the two conditions cannot occur in the same patient — so exactly one of them is correct for any given encounter.
The official note, declared on Q92.2
partial trisomy due to unbalanced translocation (Q92.5)
Q92.2
Partial trisomy
Billable
- Chapter 17
- Congenital malformations, deformations, chromosomal abnormalities, and genetic disorders
- Section
- Q90-Q99
Use when the record says
- Less than whole arm duplicated
- Whole arm or more duplicated
Indexed under
- Trisomy › chromosome specified NEC › partial (syndrome)
Q92.5
Duplications with other complex rearrangements
Billable
- Chapter 17
- Congenital malformations, deformations, chromosomal abnormalities, and genetic disorders
- Section
- Q90-Q99
Use when the record says
- Partial trisomy due to unbalanced translocations
Indexed under
- Accessory › chromosome › with complex rearrangements NEC (congenital)
- Duplication, duplex › chromosome NEC › with complex rearrangements NEC
- Trisomy › chromosome specified NEC › partial › due to unbalanced translocation (syndrome)
Excludes1 is not always absolute: where two conditions covered by the note are genuinely unrelated, CMS guidance permits reporting both. Document the reasoning rather than assuming it. More on Excludes1 vs Excludes2 · FY2027