ICD-10-CM 2027
ICD-10 code for mosaicism
Choose a code from the options below based on the documentation.
From the official ICD-10-CM alphabetic index entry “Mosaicism, mosaic (autosomal) (chromosomal)”. Page updated September 29, 2026.
About coding mosaicism
The official ICD-10-CM index doesn't give a single default code for mosaicism; the code depends on the details below.
More specific mosaicism codes (official index)
- 45,X/other cell lines NEC with abnormal sex chromosome Q96.4 — Mosaicism, 45, X/other cell line(s) with abnormal sex chromosome
- 45,X/46,XX Q96.3 — Mosaicism, 45, X/46, XX or XY
- sex chromosome
- female Q97.8 — Other specified sex chromosome abnormalities, female phenotype
- lines with various numbers of X chromosomes Q97.2 — Mosaicism, lines with various numbers of X chromosomes
- male Q98.7 — Male with sex chromosome mosaicism
- XY Q96.3 — Mosaicism, 45, X/46, XX or XY
Common questions about mosaicism ICD-10 codes
What is the ICD-10 code for xy mosaicism?
- Q96.3 — Mosaicism, 45, X/46, XX or XY.