2026 ICD-10-CM Diagnosis Code Q56Indeterminate sex and pseudohermaphroditism

ICD-10-CM Codes›Q00-Q99›Q50-Q56›Q56

ICD-10-CM Q56
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

Q56 is a non-billable ICD-10-CM category code for indeterminate sex and pseudohermaphroditism, so it cannot be submitted on claims. Use a more specific code from this category instead, such as Q56.0, Q56.1, Q56.2, and Q56.3.

Code Identity

ICD-10-CM Code
Q56
Billable Status
No — Non-Billable Category
Code Describes
Indeterminate sex and pseudohermaphroditism
Chapter
Q50-Q56
Congenital malformations of genital organs

Code Classification

ChapterQ00-Q99Congenital malformations, deformations and chromosomal abnormalities
SectionQ50-Q56Congenital malformations of genital organs
CategoryQ56Indeterminate sex and pseudohermaphroditism
This CodeQ56Indeterminate sex and pseudohermaphroditism

Specific Coding for Indeterminate sex and pseudohermaphroditismOverview

Non-specific codes like Q56 require more characters. Use one of these billable codes instead:

  • Use Q56.0 for Hermaphroditism, not elsewhere classified

  • Use Q56.1 for Male pseudohermaphroditism, not elsewhere classified

  • Use Q56.2 for Female pseudohermaphroditism, not elsewhere classified

  • Use Q56.3 for Pseudohermaphroditism, unspecified

  • Use Q56.4 for Indeterminate sex, unspecified

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Type 1 Excludes

  • 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

Patient EducationClinical

Birth Defects

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Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About Q56Overview

Is Q56 (Indeterminate sex and pseudohermaphroditism) a billable code?

No. This is a category header that groups the codes for indeterminate sex and pseudohermaphroditism, and headers cannot be submitted on claims. Claims for indeterminate sex and pseudohermaphroditism need a more specific code from this category, such as Q56.0, Q56.1, and Q56.2.