ICD-10-CM 2027
ICD-10 code for sex
Choose a code from the options below based on the documentation.
From the official ICD-10-CM alphabetic index entry “Sex”. Page updated September 29, 2026.
About coding sex
The official ICD-10-CM index doesn't give a single default code for sex; the code depends on the details below.
More specific sex codes (official index)
- chromosome mosaics 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
- education Z70.8 — Other sex counseling
- reassignment surgery status Z87.890 — Personal history of sex reassignment
Common questions about sex ICD-10 codes
What is the ICD-10 code for chromosome mosaics sex?
- Q97.8 — Other specified sex chromosome abnormalities, female phenotype.
What is the ICD-10 code for education sex?
- Z70.8 — Other sex counseling.
What is the ICD-10 code for reassignment surgery status sex?
- Z87.890 — Personal history of sex reassignment (header code; choose a more specific subcode).