Q99.1

ICD-10Billable

46, XX true hermaphrodite

Official ICD-10-CM descriptor (FY2026)

46, XX true hermaphrodite

Q99.1 is valid for submission on a claim — CMS flags it as a billable, specific code.

Inclusion terms

46, XX with streak gonads
46, XY with streak gonads
Pure gonadal dysgenesis

Related codes in Q99

Where this code sits

Chapter: 17. Congenital malformations, deformations, chromosomal abnormalities, and genetic disorders (Q00-QA0)
Block: Chromosomal abnormalities, not elsewhere classified (Q90-Q99)
Parent code: Q99

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Source

ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.