Q56.4

Billable

ChapterQ00–Q99

Ranksubcategory

Official Description

Indeterminate sex, unspecified

Metadata & Insights

•2026 ICD-10-CM Edition - Effective October 1, 2025.
•Billable/specific code (valid for reimbursement).
•Chapter 17: Congenital Malformations, Deformations and Chromosomal Abnormalities (Q00-Q99).

Instructional Notes

Includes

Ambiguous genitalia

General instructions are available for the parent sections:

View CH17 Notes View Q50-Q56 Notes View Q56 Notes

Clinical Hierarchy

CH17Congenital malformations, deformations and chromosomal abnormalities (Q00-QA0)

Q50-Q56Congenital malformations of genital organs (Q50-Q56)

Q56Indeterminate sex and pseudohermaphroditism

Q56.4Indeterminate sex, unspecified

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to Q56.4:

categoryQ56

Indeterminate sex and pseudohermaphroditism

View context instructions

blockQ50-Q56

Congenital malformations of genital organs (Q50-Q56)

View context instructions

chapterCH17

Congenital malformations, deformations and chromosomal abnormalities (Q00-QA0)

View context instructions

Alphabetic Index Mentions

These are Diagnosis Index lookup paths that route to Q56.4. Use them as entry terms for search, then confirm final coding instructions in the Tabular List and notes above.

2 raw paths

Ambiguous genitalia1 unique routes

Direct index entry→Q56.4

Indeterminate sex1 unique routes

Direct index entry→Q56.4