DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

Q92 Other trisomies and partial trisomies of the autosomes, not elsewhere classified

  • Header · not billable

Q92 is not billable. The category heads 9 billable codes in FY2027, grouped under 8 subdivisions.

Index → code

Where it sits

  1. Chapter 17 Congenital malformations, deformations, chromosomal abnormalities, and genetic disorders (Q00-QA1)
  2. Q90-Q99 Chromosomal abnormalities, not elsewhere classified (Q90-Q99)
  3. Q92 Other trisomies and partial trisomies of the autosomes, not elsewhere classified
Billable codes
9
Subdivisions
8
CC / MCC codes
0 / 0
HCC V28 codes
0
New FY2027
0
Index entries
33

Codes in Q92

  1. Q92.0
    Whole chromosome trisomy, nonmosaicism (meiotic nondisjunction)
    BillableExempt
  2. Q92.1
    Whole chromosome trisomy, mosaicism (mitotic nondisjunction)
    BillableExempt
  3. Q92.2
    Partial trisomy
    BillableExempt
    Inclusion terms 2, Excludes1 1

    Inclusion terms

    • Less than whole arm duplicated
    • Whole arm or more duplicated

    Excludes1

    • partial trisomy due to unbalanced translocation (Q92.5) Q92.5
  4. Q92.5
    Duplications with other complex rearrangements
    BillableExempt
    Inclusion terms 1, Code also 1

    Inclusion terms

    • Partial trisomy due to unbalanced translocations

    Code also

    • any associated deletions due to unbalanced translocations, inversions and insertions (Q93.7) Q93.7
  5. Q92.6
    Marker chromosomes
    Header
    Inclusion terms 4

    Inclusion terms

    • Trisomies due to dicentrics
    • Trisomies due to extra rings
    • Trisomies due to isochromosomes
    • Individual with marker heterochromatin
  6. Q92.61
    Marker chromosomes in normal individual
    BillableExempt
  7. Q92.62
    Marker chromosomes in abnormal individual
    BillableExempt
  8. Q92.7
    Triploidy and polyploidy
    BillableExempt
  9. Q92.8
    Other specified trisomies and partial trisomies of autosomes
    BillableExempt
    Inclusion terms 3

    Inclusion terms

    • Duplications identified by fluorescence in situ hybridization (FISH)
    • Duplications identified by in situ hybridization (ISH)
    • Duplications seen only at prometaphase
  10. Q92.9
    Trisomy and partial trisomy of autosomes, unspecified
    BillableExempt

Sources of each column.

Instructions

At Q92

Includes

  • unbalanced translocations and insertions

Excludes1

  • trisomies of chromosomes 13, 18, 21 (Q90-Q91) Q90 Q91

Notes that also apply

Block Q90-Q99 instructions (Excludes2 1): printed on the block page.

Chapter 17 instructions (Notes 1, Excludes2 1): printed on the chapter 17 page.

Index entries

  • Polyploidy → Q92.7
  • Triploidy → Q92.7
  • Trisomy (syndrome) → Q92.9
  • Extramarker chromosomes (normal individual) → Q92.61
  • Cateye syndrome → Q92.8
  • Syndromecat eye → Q92.8
  • Trisomy (syndrome)chromosome specified NEC → Q92.8
  • Trisomy (syndrome)specified NEC → Q92.8
  • Trisomy (syndrome)20 → Q92.8
  • Trisomy (syndrome)22 → Q92.8
  • Accessory (congenital)chromosome(s) NEC (nonsex) → Q92.9
  • Syndrometrisomy → Q92.9
  • Trisomy (syndrome)autosomes → Q92.9
  • Trisomy (syndrome)whole chromosome → Q92.9
  • Trisomy (syndrome)whole chromosomemeiotic nondisjunction → Q92.0
  • Trisomy (syndrome)whole chromosomemitotic nondisjunction → Q92.1
  • Trisomy (syndrome)whole chromosomemosaicism → Q92.1
  • Trisomy (syndrome)chromosome specified NECpartial → Q92.2
  • Accessory (congenital)chromosome(s) NEC (nonsex)with complex rearrangements NEC → Q92.5
  • Duplication, duplexchromosome NECwith complex rearrangements NEC → Q92.5
  • Extramarker chromosomes (normal individual)in abnormal individual → Q92.62
  • Duplication, duplexchromosome NECseen only at prometaphase → Q92.8
  • Syndrometrisomy20 (q)(p) → Q92.8
  • Syndrometrisomy22 → Q92.8
  • Trisomy (syndrome)chromosome specified NECspecified NEC → Q92.8
  • Trisomy (syndrome)whole chromosomespecified NEC → Q92.8
  • Accessory (congenital)chromosome(s) NEC (nonsex)partial → Q92.9
  • Trisomy (syndrome)whole chromosomepartial → Q92.9
  • Trisomy (syndrome)chromosome specified NECwhole (nonsex chromosome)meiotic nondisjunction → Q92.0
  • Trisomy (syndrome)chromosome specified NECwhole (nonsex chromosome)mitotic nondisjunction → Q92.1
  • Trisomy (syndrome)chromosome specified NECwhole (nonsex chromosome)mosaicism → Q92.1
  • Trisomy (syndrome)chromosome specified NECpartialdue to unbalanced translocation → Q92.5
  • Accessory (congenital)chromosome(s) NEC (nonsex)with complex rearrangements NECseen only at prometaphase → Q92.8

NCHS Alphabetic Index. Index first, then the Tabular List.

Hierarchy