Q92.8 Other specified trisomies and partial trisomies of autosomes

Billable ICD-10-CM code, FY2026. Exempt from present-on-admission (POA) reporting.

Applicable to

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

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

Includes

• unbalanced translocations and insertions

Excludes1 (never code together)

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

Risk adjustment (HCC)

• RxHCC V08: HCC 148 — Mild or Unspecified Intellectual Disability/Developmental Disorder

MS-DRG index

Defines the logic of DRG(s) 951 in MDC 23.

Approximate ICD-9-CM (GEMs)

• 758.5 Other conditions due to autosomal anomalies (approximate)

Code annotations containing back-references to Q92.8

Back-references to Q92

• Code First: D84.81 Immunodeficiency due to conditions classified elsewhere ("chromosomal abnormalities (Q90-Q99)")
• Type 1 Excludes: E25 Adrenogenital disorders ("chromosomal abnormalities (Q90-Q99)")
• Type 1 Excludes: Z15 Genetic susceptibility to disease ("chromosomal anomalies (Q90-Q99)")

Diagnosis Index entries for Q92.8

• 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

Nearby codes

• Q92.5 Duplications with other complex rearrangements
• Q92.6 Marker chromosomes
• 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 (this code)
• Q92.9 Trisomy and partial trisomy of autosomes, unspecified