2027 ICD-10-CM Diagnosis Code F64.9Gender identity disorder, unspecified

ICD-10-CM Codes›F01–F99›F60-F69›F64

ICD-10-CM F64.9
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

F64.9 is a billable ICD-10-CM diagnosis code for gender identity disorder, unspecified. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 887. Coders also document this condition as gender dysphoria. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Miscellaneous mental and behavioral disorders/conditions.

Code Identity

ICD-10-CM Code
F64.9
Billable Status
Yes — Valid for Submission
Code Describes
Gender identity disorder, unspecified
Short Description
Gender identity disorder, unspecified
Same as the full description in the CMS dataset.
Parent Code
F64
Gender identity disorders

Code Classification

ChapterF01–F99Mental and behavioural disorders
SectionF60-F69Disorders of adult personality and behavior
CategoryF64Gender identity disorders
This CodeF64.9Gender identity disorder, unspecified

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Gender dysphoria
  • Gender dysphoria in adolescence
  • Gender incongruence
  • Sexual relationship problem
  • Sexual relationship problem due to gender identity confusion

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to F64.9: its own notes plus those printed at Chapter 5. A note printed at a category, block or chapter applies to every code under it.

Includes

Further defines, or gives examples of, the content of the category.

From Chapter 5 (F01-F99) Mental and behavioural disorders applies to 872 codes
  • disorders of psychological development

Applicable To

Conditions this code is used for: synonyms of the title or, for "other specified" codes, the conditions assigned to it. The list is not exhaustive.

  • Gender dysphoria, unspecified
  • Gender incongruence, unspecified
  • Gender-role disorder NOS

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

From Chapter 5 (F01-F99) Mental and behavioural disorders applies to 872 codes
  • symptoms, signs and abnormal clinical laboratory findings, not elsewhere classified (R00-R99)

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR MBD013
Miscellaneous mental and behavioral disorders/conditions
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • Gender Dysphoria

    a marked difference between the individual’s expressed/experienced gender and the gender others would assign to the individual, and it must continue for at least six months. (from dsm-5)

Convert F64.9 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
302.6 Gendr identity dis-child
Approximate The match is approximate rather than exact.

Code History & ChangesHistory

Replaced This code was replaced in the FY 2027 code set by:

  • F64.A - Gender identity disorder, in remission
FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2026No changes
FY 2027CurrentExpanded into more specific codes in the current code setEffective October 1, 2026 through September 30, 2027.

Questions About F64.9Overview

What is the ICD-10 code for gender identity disorder, unspecified?

The ICD-10-CM code for gender identity disorder, unspecified is F64.9 (sometimes written as F649). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

Is F64.9 (Gender identity disorders) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report gender identity disorder, unspecified on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

What MS-DRG does F64.9 group to?

When gender identity disorder, unspecified is the principal diagnosis on an inpatient stay, it groups to MS-DRG 887 (other Mental Disorder Diagnoses), which carries a relative weight of 1.1154. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of F64.9?

Under the General Equivalence Mappings, gender identity disorder, unspecified converts to ICD-9-CM 302.6 (gendr identity dis-child). The mapping is approximate, so confirm the match fits the documentation.