Q97.2 Mosaicism, lines with various numbers of X chromosomes

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

Applies from Q97 Other sex chromosome abnormalities, female phenotype, not elsewhere classified

Excludes1 (never code together)

• Turner's syndrome (Q96.-)

MS-DRG index

Defines the logic of DRG(s) 742-743 in MDC 13.

Approximate ICD-9-CM (GEMs)

• 758.81 Other conditions due to sex chromosome anomalies (approximate)

Code annotations containing back-references to Q97.2

Back-references to Q97

• 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: Q56 Indeterminate sex and pseudohermaphroditism ("pseudohermaphroditism with specified chromosomal anomaly (Q96-Q99)")
• Type 1 Excludes: Z15 Genetic susceptibility to disease ("chromosomal anomalies (Q90-Q99)")

Diagnosis Index entries for Q97.2

• Mosaicism, mosaic (autosomal) (chromosomal) › sex chromosome › lines with various numbers of X chromosomes
• Sex › chromosome mosaics › lines with various numbers of X chromosomes

Nearby codes

• Q97 Other sex chromosome abnormalities, female phenotype, not elsewhere classified
• Q97.0 Karyotype 47, XXX
• Q97.1 Female with more than three X chromosomes
• Q97.2 Mosaicism, lines with various numbers of X chromosomes (this code)
• Q97.3 Female with 46, XY karyotype
• Q97.8 Other specified sex chromosome abnormalities, female phenotype
• Q97.9 Sex chromosome abnormality, female phenotype, unspecified