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ALL MEDICAL CODES IN CATEGORY Chromosomal abnormalities, not elsewhere classified

2025 ICD-10-CM code Q91

Trisomy 18 and Trisomy 13

2025 ICD-10-CM code Q95.0

Balanced translocation and insertion in a normal individual.

2025 ICD-10-CM code Q99.9

This code represents an unspecified chromosomal abnormality.

2025 ICD-10-CM code Q93.4

Deletion of the short arm of chromosome 5, also known as Cri-du-chat syndrome.

2025 ICD-10-CM code Q98.5

Karyotype 47, XYY is a chromosomal abnormality characterized by an extra Y chromosome.

2025 ICD-10-CM code Q90

Down syndrome, a chromosomal abnormality characterized by an extra copy of chromosome 21.

2025 ICD-10-CM code Q97.1

Female with more than three X chromosomes.

2025 ICD-10-CM code Q97.2

Mosaicism, lines with various numbers of X chromosomes.This is a congenital disorder involving variations in the number of X chromosomes across different cells in the body.

2025 ICD-10-CM code Q99.2

Fragile X chromosome; a genetic condition causing intellectual disability.

2025 ICD-10-CM code Q93.7

Deletions with other complex rearrangements.This code describes chromosomal deletions occurring alongside other complex chromosomal changes.

2025 ICD-10-CM code Q93.51

Angelman syndrome, a rare neuro-genetic disorder characterized by developmental delays, intellectual disability, speech impairment, movement and balance problems, and a happy demeanor.

2025 ICD-10-CM code Q96.9

Turner's syndrome, unspecified.

2025 ICD-10-CM code Q98.4

Klinefelter syndrome, unspecified.

2025 ICD-10-CM code Q93.3

Deletion of short arm of chromosome 4 (Wolff-Hirschorn syndrome).

2025 ICD-10-CM code Q95.5

Individual with autosomal fragile site.

2025 ICD-10-CM code Q91.2

Trisomy 18, translocation.

2025 ICD-10-CM code Q93.88

This code represents other microdeletions, including Miller-Dieker syndrome and Smith-Magenis syndrome.

2025 ICD-10-CM code Q93.8

Other deletions from the autosomes. This indicates a missing piece of a chromosome.

2025 ICD-10-CM code Q92.6

Marker chromosomes.This condition involves the presence of extra marker chromosomes in an individual's genetic makeup.

2025 ICD-10-CM code Q90.0

Trisomy 21, nonmosaicism (meiotic nondisjunction). This condition is characterized by the presence of an extra copy of chromosome 21, specifically due to meiotic nondisjunction.

2025 ICD-10-CM code Q91.1

Trisomy 18, mosaicism (mitotic nondisjunction).

2025 ICD-10-CM code Q96.1

Karyotype 46, isochromosome Xq.

2025 ICD-10-CM code Q90.9

Down syndrome, unspecified; Trisomy 21 NOS.

2025 ICD-10-CM code Q96.8

Other variants of Turner syndrome.

2025 ICD-10-CM code Q92.62

Marker chromosomes in an abnormal individual.

2025 ICD-10-CM code Q91.3

Trisomy 18, unspecified.

2025 ICD-10-CM code Q92.0

Whole chromosome trisomy, nonmosaicism (meiotic nondisjunction).

2025 ICD-10-CM code Q92.61

Marker chromosomes in normal individual. This condition involves the presence of small, extra chromosomes called marker chromosomes, which are typically seen in individuals with a normal phenotype.

2025 ICD-10-CM code Q91.5

Trisomy 13, mosaicism (mitotic nondisjunction).

2025 ICD-10-CM code Q93.0

Whole chromosome monosomy, nonmosaicism (meiotic nondisjunction).

2025 ICD-10-CM code Q90.2

Trisomy 21, translocation. This condition is characterized by an extra copy of chromosome 21 material.It is often familial, commonly involving chromosomes 14 and 21.

2025 ICD-10-CM code Q98.8

Other specified sex chromosome abnormalities, male phenotype.

2025 ICD-10-CM code Q93.5

This code represents other deletions of part of a chromosome.

2025 ICD-10-CM code Q91.6

Trisomy 13, translocation. This is a congenital disorder where there are three copies of chromosome 13 instead of the usual two, due to a translocation.

2025 ICD-10-CM code Q96

Turner syndrome, a chromosomal disorder characterized by the absence of all or part of one X chromosome in females.

2025 ICD-10-CM code Q92.9

Trisomy and partial trisomy of autosomes, unspecified.

2025 ICD-10-CM code Q92.7

Triploidy and polyploidy are chromosomal abnormalities involving an extra set or sets of chromosomes.

2025 ICD-10-CM code Q93.82

Williams syndrome, a genetic disorder.

2025 ICD-10-CM code Q99

Other chromosome abnormalities not specified elsewhere.

2025 ICD-10-CM code Q92.8

Other specified trisomies and partial trisomies of autosomes.

2025 ICD-10-CM code Q90.1

Trisomy 21, mosaicism (mitotic nondisjunction).

2025 ICD-10-CM code Q93.81

Velo-cardio-facial syndrome, a chromosomal abnormality.

2025 ICD-10-CM code Q97.0

Karyotype 47, XXX. This code represents the presence of an extra X chromosome in females, resulting in a 47,XXX karyotype.

2025 ICD-10-CM code Q95

Balanced rearrangements and structural markers, not elsewhere classified. Includes: Robertsonian and balanced reciprocal translocations and insertions.

2025 ICD-10-CM code Q96.3

This ICD-10 code represents Mosaicism, a condition where an individual has two or more cell populations with different chromosomal compositions, specifically 45,X/46,XX or XY.

2025 ICD-10-CM code Q91.4

Trisomy 13, nonmosaicism (meiotic nondisjunction)

2025 ICD-10-CM code Q95.3

This code represents a balanced sex/autosomal rearrangement in an abnormal individual.

2025 ICD-10-CM code Q93.2

Chromosome replaced with ring, dicentric or isochromosome. This condition involves a structural change where segments of one or more autosomes are broken and rearranged, leading to a ring, dicentric, or isochromosome formation.

2025 ICD-10-CM code Q96.2

Karyotype 46,X with abnormal sex chromosome, except isochromosome Xq.

2025 ICD-10-CM code Q95.8

Other balanced rearrangements and structural markers. This code encompasses chromosomal abnormalities that are balanced and not classified elsewhere.

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