Q56
⚠ Non-billable
Indeterminate sex and pseudohermaphroditism
ICD-10-CM · FY2026 · Congenital Malformations, Deformations and Chromosomal Abnormalities
Code
Q56
System
ICD-10-CM
Billable
No — use specific code
Effective
FY2026
Chapter
Congenital Malformations, Deformations and Chromosomal Abnormalities
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.
Official coding notes
From CMS's ICD-10-CM Tabular List.
Excludes1 — never code together
- 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)
Frequently asked questions
What is ICD-10 code Q56?
ICD-10-CM code Q56 represents Indeterminate sex and pseudohermaphroditism. It is a non-billable header code requiring a more specific subcategory in the Congenital Malformations, Deformations and Chromosomal Abnormalities chapter, effective October 1, 2025 – September 30, 2026.
Is Q56 billable?
No. Q56 is a non-billable header. Select a more specific subcategory for claims submission.
What chapter is Q56 in?
Q56 belongs to the Congenital Malformations, Deformations and Chromosomal Abnormalities chapter (Q00–Q99) of ICD-10-CM.
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