Q56 – Indeterminate sex and pseudohermaphroditism

ICD-10-CM 2027 diagnosis code · Congenital malformations of genital organs

Non-billable header

ICD-10-CM code Q56
Code
Q56 (claims format: Q56)
Description
Indeterminate sex and pseudohermaphroditism
Billable
No – use a more specific code below
Valid for
Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter
17. Congenital malformations, deformations, chromosomal abnormalities, and genetic disorders (Q00-QA1)
Block
Q50-Q56 Congenital malformations of genital organs

Billable codes under Q56

Q56 is a header code and cannot be used on claims. Choose the most specific code:

Notes for Q56

Excludes1 (not coded here):
  • 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.-)
  • pseudohermaphroditism with specified chromosomal anomaly (Q96-Q99)
  • pure gonadal dysgenesis (Q99.1)

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

Block Q50-Q56

Excludes1 (not coded here):
  • androgen insensitivity syndrome (E34.5-)
  • syndromes associated with anomalies in the number and form of chromosomes (Q90-Q99)

Frequently asked questions

What is ICD-10 code Q56?

Q56 is the ICD-10-CM code for indeterminate sex and pseudohermaphroditism, in the block Q50-Q56 (Congenital malformations of genital organs).

Is Q56 a billable code?

No. Q56 is a header code with more specific child codes; report one of the billable codes listed above.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.