2026 ICD-10-CM Diagnosis Code Q92.8Other specified trisomies and partial trisomies of autosomes

ICD-10-CM Codes›Q00-Q99›Q90-Q99›Q92

ICD-10-CM Q92.8
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

Q92.8 is a billable ICD-10-CM diagnosis code for other specified trisomies and partial trisomies of autosomes. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026). The code is exempt from POA reporting. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Chromosomal abnormalities.

Code Identity

ICD-10-CM Code
Q92.8
Billable Status
Yes — Valid for Submission
Code Describes
Other specified trisomies and partial trisomies of autosomes
Short Description
Other specified trisomies and partial trisomies of autosomes
Same as the full description in the CMS dataset.
Parent Code
Q92
Other trisomies and partial trisomies of the autosomes, not elsewhere classified

Code Classification

ChapterQ00-Q99Congenital malformations, deformations and chromosomal abnormalities
SectionQ90-Q99Chromosomal abnormalities, not elsewhere classified
CategoryQ92Other trisomies and partial trisomies of the autosomes, not elsewhere classified
This CodeQ92.8Other specified trisomies and partial trisomies of autosomes

Present on Admission (POA)Billing

Q92.8 is exempt from POA reporting on inpatient claims to general acute care hospitals. Review other POA exempt codes.

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • 10p partial trisomy syndrome
  • 10q partial trisomy syndrome
  • 10q22.3q23.3 microduplication syndrome
  • 11p15.4 microduplication syndrome
  • 11q partial trisomy syndrome
  • 12p partial trisomy syndrome
  • 14q partial distal trisomy syndrome
  • 14q partial proximal trisomy syndrome
  • 14q partial trisomy
  • 14q11.2 microduplication syndrome
  • 15q11q13 microduplication syndrome
  • 17p partial trisomy syndrome
  • 17p13.3 microduplication syndrome
  • 17q partial trisomy syndrome
  • 17q11.2 microduplication syndrome
  • 18p partial trisomy syndrome
  • 19q partial trisomy syndrome
  • 1q21.1 microduplication syndrome
  • 20p partial trisomy syndrome
  • 20q partial trisomy
  • 22q partial trisomy
  • 22q11.2 duplication syndrome
  • 2p partial trisomy syndrome
  • 2q partial trisomy syndrome
  • 3p partial trisomy syndrome
  • 3q partial trisomy syndrome
  • 3q26 microduplication syndrome
  • 3q29 microduplication
  • 4p partial trisomy syndrome
  • 4q partial trisomy syndrome
  • 5p partial trisomy
  • 5p13 microduplication syndrome
  • 5q35 microduplication syndrome
  • 6q partial trisomy syndrome
  • 7q partial trisomy
  • 8q partial trisomy syndrome
  • 8q12 microduplication syndrome
  • Cat eye syndrome
  • Complete trisomy 16 syndrome
  • Complete trisomy 20 syndrome
  • Complete trisomy 22 syndrome
  • Complete trisomy 8 syndrome
  • Complete trisomy 9 syndrome
  • Congenital nystagmus
  • Distal 7q11.23 microduplication syndrome
  • Distal trisomy 11q
  • Distal trisomy 16q
  • Distal trisomy 19q
  • Distal trisomy 1p36
  • Distal trisomy 20q syndrome
  • Distal trisomy 2p
  • Distal trisomy 2q
  • Distal trisomy 3p
  • Distal trisomy 4q
  • Distal trisomy 5q syndrome
  • Distal trisomy 6q
  • Distal trisomy 8q
  • Duplication of part of long arm of chromosome 16
  • Duplication seen only at prometaphase
  • MECP2 duplication syndrome
  • MECP2 related disorder
  • Mosaic trisomy 8 syndrome
  • Partial duplication of long arm of chromosome 15
  • Partial trisomy of chromosome 10
  • Partial trisomy of chromosome 11
  • Partial trisomy of chromosome 12
  • Partial trisomy of chromosome 14
  • Partial trisomy of chromosome 15
  • Partial trisomy of chromosome 16
  • Partial trisomy of chromosome 18
  • Partial trisomy of chromosome 19
  • Partial trisomy of chromosome 2
  • Partial trisomy of chromosome 20
  • Partial trisomy of chromosome 22
  • Partial trisomy of chromosome 3
  • Partial trisomy of chromosome 4
  • Partial trisomy of chromosome 5
  • Partial trisomy of chromosome 6
  • Partial trisomy of chromosome 7
  • Partial trisomy of chromosome 8
  • Partial trisomy of long arm of chromosome 1
  • Partial trisomy of long arm of chromosome 5
  • Partial trisomy of short arm of chromosome 1
  • Partial trisomy of short arm of chromosome 8
  • Pendular nystagmus
  • Pseudotrisomy 18
  • Syndactyly, nystagmus syndrome due to 2q31.1 microduplication
  • Trisomy 10
  • Trisomy 11
  • Trisomy 12
  • Trisomy 17p
  • Trisomy 1q syndrome
  • Trisomy 22
  • Trisomy 6
  • Trisomy 7
  • Trisomy 8
  • Trisomy 8p syndrome
  • Trisomy 9

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Inclusion Terms

  • Duplications identified by fluorescence in situ hybridization (FISH)
  • Duplications identified by in situ hybridization (ISH)
  • Duplications seen only at prometaphase

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Accessory(congenital)
      • chromosome (s) NEC (nonsex)
        • with complex rearrangements NEC
          • seen only at prometaphase
    • Cat
      • eye syndrome
    • Duplication, duplex
      • chromosome NEC
        • seen only at prometaphase
    • Syndrome
      • cat eye
    • Syndrome
      • trisomy
        • 20 (q) (p)
    • Syndrome
      • trisomy
        • 22
    • Trisomy(syndrome)
      • chromosome specified NEC
    • Trisomy(syndrome)
      • chromosome specified NEC
        • specified NEC
    • Trisomy(syndrome)
      • specified NEC
    • Trisomy(syndrome)
      • whole chromosome
        • specified NEC
    • Trisomy(syndrome)
      • 20
    • Trisomy(syndrome)
      • 22

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR MAL009
Chromosomal abnormalities
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • Trisomy 7

    a chromosomal abnormality consisting of the presence of a third copy of chromosome 7 in somatic cells.

  • Trisomy 9

    a chromosomal abnormality consisting of the presence of a third copy of chromosome 9 in somatic cells.

  • Trisomy 10

    a chromosomal abnormality consisting of the presence of a third copy of chromosome 10 in somatic cells.

  • Trisomy 11

    the presence of a third copy of chromosome 11 in somatic cells.

  • Trisomy 12

    a chromosomal abnormality consisting of the presence of a third copy of chromosome 12 in somatic cells.

  • Chimpanzee Trisomy 22|Chimpanzee Down Syndrome

    a condition resulting from the presence of an extra copy of chromosome 22 in chimpanzees. the condition is in many respects similar to trisomy 21 in humans.

  • Trisomy 22

    a chromosomal abnormality consisting of the presence of a third copy of chromosome 22 in somatic cells.

  • Distal Trisomy 2p

    a chromosomal anomaly characterized by the partial duplication of the short arm of chromosome 2. the phenotype is highly variable but principally characterized by growth failure, global developmental delay, facial dysmorphism and ocular anomalies.

  • Trisomy 6

    a chromosomal abnormality characterized by the presence of a third copy of chromosome 6 in a cell.

Patient EducationClinical

Genetic Disorders

Genetic disorders are health conditions caused by changes (also called mutations or variants) in your genes. Genes are parts of DNA found in your cells that carry instructions for how your body grows, develops, and functions. Many genes tell your body how to make proteins, which are needed for your body to work properly.

The full article covers:

  • What are genetic disorders?
  • What causes genetic disorders?
  • What are the types of genetic disorders?
  • What are the different ways a genetic disorder can be inherited?
  • How are genetic disorders diagnosed?

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert Q92.8 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
758.5 Autosomal anomalies NEC
Approximate The match is approximate rather than exact.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About Q92.8Overview

Is Q92.8 a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report other specified trisomies and partial trisomies of autosomes on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

Is Q92.8 exempt from POA reporting?

Yes. CMS lists this code among those exempt from present on admission reporting, so hospitals do not assign a POA indicator for other specified trisomies and partial trisomies of autosomes on inpatient claims.

What is the ICD-9 equivalent of Q92.8?

Under the General Equivalence Mappings, other specified trisomies and partial trisomies of autosomes converts to ICD-9-CM 758.5 (autosomal anomalies NEC). The mapping is approximate, so confirm the match fits the documentation.

Footnotes

[1] Chronic - a chronic condition code indicates a condition lasting 12 months or longer and its effect on the patient based on one or both of the following criteria:

  • The condition results in the need for ongoing intervention with medical products,treatment, services, and special equipment
  • The condition places limitations on self-care, independent living, and social interactions.