ICD-10-CM Code For Other Trisomies And Partial Trisomies Of The Autosomes Not Elsewhere Classified: Group Overview

The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group Q92 includes rare chromosomal disorders involving whole or partial extra copies of autosomes that are not specified in other categories, covering various trisomies and partial duplications. These ICD-10-CM diagnosis codes are used to document congenital chromosomal anomalies identified prenatally, at birth, or later that affect growth, development, and multiple organ systems, capturing disease severity, organ involvement, or clinical complexity relevant to this group. Accurate coding within the ICD-10-CM Q92 group supports proper claim adjudication, complete clinical documentation, and appropriate reimbursement.

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ICD-10-CM Q92: Other Trisomies And Partial Trisomies Of The Autosomes, Not Elsewhere Classified Overview

This group includes chromosomal abnormalities characterized by extra whole or partial copies of autosomes that are not classified elsewhere. These conditions affect genetic and developmental processes and can involve multiple organ systems depending on the chromosomal material involved. Accurate coding matters for clinical records, epidemiology, and correct reimbursement for services related to genetic diagnosis and management.

When to Use

Use a code from this group when a clinician documents a diagnosis of an autosomal trisomy or partial trisomy that is not classified under another specific International Classification of Diseases, Tenth Revision, Clinical Modification code. Assign these codes when genetic testing or clinical assessment confirms the presence of an unspecified or uncommon autosomal extra chromosomal segment causing clinical findings.

ICD-10-CM Codes

9 rows

ICD-10-CM Code	Description
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
Q92.61	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

DRG Codes

1 rows

DRG Code	Description
951	Other Factors Influencing Health Status

Typical Clinical Scenarios

A neonate is delivered with multiple dysmorphic features including low-set ears, micrognathia, congenital heart defects (ventricular septal defect), and hypotonia detected on newborn exam; prenatal karyotype or postnatal chromosomal microarray confirms a full or mosaic trisomy of an autosome such as trisomy 13 (Patau) or trisomy 18 (Edwards). The infant is admitted to the neonatal unit for stabilization and evaluation of associated organ anomalies; a code from this group is assigned to document the specific autosomal trisomy identified after cytogenetic testing. Typical codes: Q92.5, Q92.2
An adult with a history of developmental delay, short stature, and recurrent infertility presents to genetics clinic for evaluation of suspected partial autosomal trisomy after abnormal findings on prior chromosomal microarray showing duplication of a chromosome segment. The visit documents long-standing congenital features and the molecular cytogenetic report; a code from this group is used to capture the partial trisomy as the primary chromosomal abnormality contributing to the patient’s phenotype and management. Typical codes: Q92.8, Q92.7
A pregnant woman undergoes second-trimester ultrasound showing fetal growth restriction and multiple structural anomalies; amniocentesis returns a diagnosis of mosaic autosomal trisomy confined to the fetus. Obstetrics documents the fetal chromosomal abnormality as the reason for increased surveillance, counseling, and delivery planning; a specific code from this group is assigned to represent the fetal trisomy as a significant factor in prenatal care. Typical codes: Q92.61, Q92.62

Related Codes

Q90-DOWN-SYNDROME

ICD-10-CM Code For Down Syndrome: Group Overview

Q91-TRISOMY-18-AND-TRISOMY-13

ICD-10-CM Code For Trisomy 18 And Trisomy 13: Group Overview

Q93-MONOSOMIES-AND-DELETIONS

ICD-10-CM Code For Monosomies And Deletions From The Autosomes Not Elsewhere Classified: Group Overview

Q95-BALANCED-REARRANGEMENTS-AND-STRUCTURAL-MARKERS

ICD-10-CM Code For Balanced Rearrangements And Structural Markers Not Elsewhere Classified: Group Overview

Q96-TURNERS-SYNDROME

ICD-10-CM Code For Turner's Syndrome: Group Overview

Q97-OTHER-SEX-CHROMOSOME-ABNORMALITIES-FEMALE-PHENOTYPE

ICD-10-CM Code For Other Sex Chromosome Abnormalities Female Phenotype Not Elsewhere Classified: Group Overview

Q98-OTHER-SEX-CHROMOSOME-ABNORMALITIES-MALE-PHENOTYPE

ICD-10-CM Code For Other Sex Chromosome Abnormalities Male Phenotype Not Elsewhere Classified: Group Overview

Q99-OTHER-CHROMOSOME-ABNORMALITIES-NOT-ELSEWHERE-CLASSIFIED

ICD-10-CM Code For Other Chromosome Abnormalities, Not Elsewhere Classified: Group Overview

Frequently Asked Questions

References

1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.

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When to Use

ICD-10-CM Codes

9 rows

ICD-10-CM Code	Description
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
Q92.61	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

DRG Codes

1 rows

DRG Code	Description
951	Other Factors Influencing Health Status

Typical Clinical Scenarios

A neonate is delivered with multiple dysmorphic features including low-set ears, micrognathia, congenital heart defects (ventricular septal defect), and hypotonia detected on newborn exam; prenatal karyotype or postnatal chromosomal microarray confirms a full or mosaic trisomy of an autosome such as trisomy 13 (Patau) or trisomy 18 (Edwards). The infant is admitted to the neonatal unit for stabilization and evaluation of associated organ anomalies; a code from this group is assigned to document the specific autosomal trisomy identified after cytogenetic testing. Typical codes: Q92.5, Q92.2
An adult with a history of developmental delay, short stature, and recurrent infertility presents to genetics clinic for evaluation of suspected partial autosomal trisomy after abnormal findings on prior chromosomal microarray showing duplication of a chromosome segment. The visit documents long-standing congenital features and the molecular cytogenetic report; a code from this group is used to capture the partial trisomy as the primary chromosomal abnormality contributing to the patient’s phenotype and management. Typical codes: Q92.8, Q92.7
A pregnant woman undergoes second-trimester ultrasound showing fetal growth restriction and multiple structural anomalies; amniocentesis returns a diagnosis of mosaic autosomal trisomy confined to the fetus. Obstetrics documents the fetal chromosomal abnormality as the reason for increased surveillance, counseling, and delivery planning; a specific code from this group is assigned to represent the fetal trisomy as a significant factor in prenatal care. Typical codes: Q92.61, Q92.62

Related Codes

Q90-DOWN-SYNDROME

ICD-10-CM Code For Down Syndrome: Group Overview

Q91-TRISOMY-18-AND-TRISOMY-13

ICD-10-CM Code For Trisomy 18 And Trisomy 13: Group Overview

Q93-MONOSOMIES-AND-DELETIONS

ICD-10-CM Code For Monosomies And Deletions From The Autosomes Not Elsewhere Classified: Group Overview

Q95-BALANCED-REARRANGEMENTS-AND-STRUCTURAL-MARKERS

ICD-10-CM Code For Balanced Rearrangements And Structural Markers Not Elsewhere Classified: Group Overview

Q96-TURNERS-SYNDROME

ICD-10-CM Code For Turner's Syndrome: Group Overview

Q97-OTHER-SEX-CHROMOSOME-ABNORMALITIES-FEMALE-PHENOTYPE

ICD-10-CM Code For Other Sex Chromosome Abnormalities Female Phenotype Not Elsewhere Classified: Group Overview

Q98-OTHER-SEX-CHROMOSOME-ABNORMALITIES-MALE-PHENOTYPE

ICD-10-CM Code For Other Sex Chromosome Abnormalities Male Phenotype Not Elsewhere Classified: Group Overview

Q99-OTHER-CHROMOSOME-ABNORMALITIES-NOT-ELSEWHERE-CLASSIFIED

ICD-10-CM Code For Other Chromosome Abnormalities, Not Elsewhere Classified: Group Overview

Frequently Asked Questions

References

1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.

Published by

Trek Health powers OpenPayer with a leading commercial payer intelligence platform, seamlessly converting fragmented payer data into actionable insights for provider organizations.

ICD-10-CM Code For Other Trisomies And Partial Trisomies Of The Autosomes Not Elsewhere Classified: Group Overview

Sign up for ICD-10-CM Code For Other Trisomies And Partial Trisomies Of The Autosomes Not Elsewhere Classified: Group Overview policy alerts

ICD-10-CM Q92: Other Trisomies And Partial Trisomies Of The Autosomes, Not Elsewhere Classified Overview

ICD-10-CM Code For Other Trisomies And Partial Trisomies Of The Autosomes Not Elsewhere Classified: Group Overview

Sign up for ICD-10-CM Code For Other Trisomies And Partial Trisomies Of The Autosomes Not Elsewhere Classified: Group Overview policy alerts

ICD-10-CM Q92: Other Trisomies And Partial Trisomies Of The Autosomes, Not Elsewhere Classified Overview

When to Use

ICD-10-CM Codes

DRG Codes

Typical Clinical Scenarios

Related Codes

Which conditions are included in the ICD-10-CM Q92 group?

When are Q92 diagnoses typically documented?

How does accurate coding within Q92 affect reimbursement and documentation?

What distinctions exist among the whole chromosome trisomy codes in Q92?

Which Q92 codes address marker chromosomes and complex rearrangements?

References

When to Use

ICD-10-CM Codes

DRG Codes

Typical Clinical Scenarios

Related Codes

Which conditions are included in the ICD-10-CM Q92 group?

When are Q92 diagnoses typically documented?

How does accurate coding within Q92 affect reimbursement and documentation?

What distinctions exist among the whole chromosome trisomy codes in Q92?

Which Q92 codes address marker chromosomes and complex rearrangements?

References