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  6. 2025 ICD-10-CM Code F64.0

2025 ICD-10-CM Diagnosis Code F64.0

Transsexualism

ICD-10-CM Code:
F64.0
ICD-10 Code for:
Transsexualism
Is Billable?
Yes - Valid for Submission
Chronic Condition Indicator: [1]
Chronic
Code Navigator:

F64.0 is a billable diagnosis code used to specify a medical diagnosis of transsexualism. The code is valid during the current fiscal year for the submission of HIPAA-covered transactions from October 01, 2024 through September 30, 2025.

Code Classification

  • Mental and behavioural disorders
    F01–F99
    • Disorders of adult personality and behavior
      F60-F69
      • Gender identity disorders
        F64

Approximate Synonyms

The following list of clinical terms are approximate synonyms, alternative descriptions, or common phrases that might be used by patients, healthcare providers, or medical coders to describe the same condition. These synonyms and related diagnosis terms are often used when searching for an ICD-10 code, especially when the exact medical terminology is unclear. Whether you're looking for lay terms, similar diagnosis names, or common language alternatives, this list can help guide you to the correct ICD-10 classification.

  • Adult gender identity disorder, sexually attracted to both sexes
  • Adult gender identity disorder, sexually attracted to females
  • Adult gender identity disorder, sexually attracted to males
  • Adult gender identity disorder, sexually attracted to neither sex
  • Desire to become member of the opposite sex
  • Female to male transsexual person on hormone therapy
  • Female-to-male transsexual
  • Female-to-male transsexual
  • Gender dysphoria
  • Gender dysphoria in adolescence and adulthood
  • Gender finding
  • Gender finding
  • Gender identity disorder of adolescence
  • Gender identity disorder of adolescence, previously heterosexual
  • Gender identity disorder of adolescence, previously homosexual
  • Gender identity disorder of adulthood
  • Gender identity disorder of adulthood, previously heterosexual
  • Gender identity disorder of adulthood, previously homosexual
  • Male to female transsexual person on hormone therapy
  • Male-to-female transsexual
  • Male-to-female transsexual
  • Mental disorder in adolescence
  • Mental disorder in adolescence
  • Mental disorder in adolescence
  • Surgically transgendered transsexual
  • Surgically transgendered transsexual
  • Surgically transgendered transsexual, female-to-male
  • Surgically transgendered transsexual, male-to-female
  • Transsexual
  • Transsexual
  • Transsexual

Clinical Classification

Clinical Classifications group individual ICD-10-CM diagnosis codes into broader, clinically meaningful categories. These categories help simplify complex data by organizing related conditions under common clinical themes.

They are especially useful for data analysis, reporting, and clinical decision-making. Even when diagnosis codes differ, similar conditions can be grouped together based on their clinical relevance. Each category is assigned a unique CCSR code that represents a specific clinical concept, often tied to a body system or medical specialty.

Miscellaneous mental and behavioral disorders/conditions

CCSR Code: MBD013

Inpatient Default: Y - Yes, default inpatient assignment for principal diagnosis or first-listed diagnosis.

Outpatient Default: Y - Yes, default outpatient assignment for principal diagnosis or first-listed diagnosis.

Clinical Information

  • Transsexualism

    expression of a gender identity inconsistent with, or not culturally-associated with the gender assigned to an individual at birth, combined with the desire to permanently transition to the gender with which they identify.

  • 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)

  • Gender Identity

    a person's concept of self as being male and masculine or female and feminine, or ambivalent, based in part on physical characteristics, parental responses, and psychological and social pressures. it is the internal experience of gender role.

  • Female-to-Male Transsexual Animal|Female-to-Male Transsexual

    an organism that was female at birth based on physical characteristics and has undergone hormonal therapy and/or surgical procedures in order to develop more male physical characteristics.

  • Female-to-Male Transsexual Phenotype|Female-to-Male Transsexual

    an individual who was female at birth based on physical characteristics and has undergone hormonal therapy and/or surgical procedures in order to develop more male physical characteristics.

  • Female-to-Male Transsexual|F-to-M|F2M|FTM|Female-to-Male Transsexual, Self-Report|TM|Trans Man|Transgender Male|Transgender male|Transman|Transsexual Male|Transsexual Man

    a person who was assigned to the female gender at birth based on physical characteristics but who self-identifies psychologically and emotionally as male.

  • Male-to-Female Transsexual Animal|Male-to-Female Transsexual

    an organism that was male at birth based on physical characteristics and has undergone hormonal therapy and/or surgical procedures in order to develop more female physical characteristics.

  • Male-to-Female Transsexual Phenotype|Male-to-Female Transsexual

    an individual who was male at birth based on physical characteristics and has undergone hormonal therapy and/or surgical procedures in order to develop more female physical characteristics.

  • Male-to-Female Transsexual|M-to-F|M2F|MTF|Male-to-Female Transsexual, Self-Report|TF|Trans Female|Trans Woman|Transgender Female|Transgender female|Transsexual Female|Transwoman

    a person who was assigned to the male gender at birth based on physical characteristics but who self-identifies psychologically and emotionally as female.

  • Transsexual

    a person who was assigned to one gender at birth based on physical characteristics but who self-identifies psychologically and emotionally as the other.

Tabular List of Diseases and Injuries

The following annotation back-references are applicable to this diagnosis code. The Tabular List of Diseases and Injuries is a list of ICD-10-CM codes, organized "head to toe" into chapters and sections with coding notes and guidance for inclusions, exclusions, descriptions and more.


Inclusion Terms

Inclusion Terms
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
  • Gender dysphoria in adolescents and adults
  • Gender identity disorder in adolescence and adulthood
  • Gender incongruence in adolescents and adults
  • Transgender

Type 1 Excludes

Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
  • gender identity disorder of childhood F64.2

Index to Diseases and Injuries References

The following annotation back-references for this diagnosis code are found in the injuries and diseases index. The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10-CM code(s).

Replacement Code

F640 replaces the following previously assigned ICD-10-CM code(s):

  • F64.1 - Dual role transvestism
  • F64.1 - Gender identity disorder in adolescence and adulthood

Convert F64.0 to ICD-9-CM

Below are the ICD-9 codes that most closely match this ICD-10 code, based on the General Equivalence Mappings (GEMs). This ICD-10 to ICD-9 crosswalk tool is helpful for coders who need to reference legacy diagnosis codes for audits, historical claims, or approximate code comparisons.

Trans-sexualism NOS

ICD-9-CM: 302.50

Approximate Flag - The approximate mapping means this ICD-10 code does not have an exact ICD-9 equivalent. The matched code is the closest available option, but it may not fully capture the original diagnosis or clinical intent.

View Conversion

Trans-sexualism, asexual

ICD-9-CM: 302.51

Approximate Flag - The approximate mapping means this ICD-10 code does not have an exact ICD-9 equivalent. The matched code is the closest available option, but it may not fully capture the original diagnosis or clinical intent.

View Conversion

Trans-sexual, homosexual

ICD-9-CM: 302.52

Approximate Flag - The approximate mapping means this ICD-10 code does not have an exact ICD-9 equivalent. The matched code is the closest available option, but it may not fully capture the original diagnosis or clinical intent.

View Conversion

Trans-sex, heterosexual

ICD-9-CM: 302.53

Approximate Flag - The approximate mapping means this ICD-10 code does not have an exact ICD-9 equivalent. The matched code is the closest available option, but it may not fully capture the original diagnosis or clinical intent.

View Conversion

Patient Education


LGBTQIA+ Health

Members of the LGBTQIA+ community include people who are:

  • Lesbian
  • Gay
  • Bisexual
  • Transgender
  • Queer or Questioning
  • Intersex
  • Asexual
  • Elsewhere on the gender and sexuality spectrum or allies to the community

On this page you'll find information about health issues that are specific to the LGBTQIA+ community.


[Learn More in MedlinePlus]

Code History

  • FY 2024 - No Change, effective from 10/1/2023 through 9/30/2024
  • FY 2023 - No Change, effective from 10/1/2022 through 9/30/2023
  • FY 2022 - No Change, effective from 10/1/2021 through 9/30/2022
  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018

Footnotes

[1] Chronic - a chronic condition code indicates a condition lasting 12 months or longer and its effect on the patient based on one or both of the following criteria:

  • The condition results in the need for ongoing intervention with medical products,treatment, services, and special equipment
  • The condition places limitations on self-care, independent living, and social interactions.