ICD-10-CM 2027 diagnosis code
Q56Indeterminate sex and pseudohermaphroditism
Q56 is a header code, so it can't be reported by itself. Choose one of the 5 more specific codes beneath it.
Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data
About Q56
Q56 is the ICD-10-CM diagnosis code for indeterminate sex and pseudohermaphroditism. It belongs to block Q50-Q56 (congenital malformations of genital organs) and chapter 17 (congenital malformations, deformations, chromosomal abnormalities, and genetic disorders). It is a header code, so it can't be reported by itself; one of its 5 subcodes must be used instead.
To report this condition, pick the subcode that matches the documentation: Q56.0 (classified), Q56.1 (classified), Q56.2 (classified), Q56.3 (unspecified) and Q56.4 (unspecified).
Don't report Q56 together with the conditions in its Excludes1 note: 46,XX true hermaphrodite (Q99.1), androgen insensitivity syndrome (E34.5-), chimera 46,XX/46,XY true hermaphrodite (Q99.0), female pseudohermaphroditism with adrenocortical disorder (E25.-) and 2 more.
It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.
Specific codes under Q56
Coding notes
Notes that apply from higher levels
Instructions written at a parent level also apply to Q56.
Broader instructions also apply from Q50-Q56 Congenital malformations of genital organs and Chapter 17: Congenital malformations, deformations, chromosomal abnormalities, and genetic disorders.
Codes whose notes reference Q56
- E25Excludes1
Code history
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
- 2026
- 2027
- FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
- No changes since FY2016.
Common questions about Q56
Is Q56 billable?
- No. Q56 is a header code. Report one of its more specific subcodes instead.