F64.0 — Transsexualism
F64.0 is a billable, specific ICD-10-CM code for transsexualism. It is valid for submission on a claim.
Excludes1 — never code together
These conditions cannot occur together. Billing both on the same encounter is a denial.
- gender identity disorder of childhood (F64.2)
Inclusion terms
Alternative wordings a physician may use in the chart for this same code.
- Gender dysphoria in adolescents and adults
- Gender identity disorder in adolescence and adulthood
- Gender incongruence in adolescents and adults
- Transgender
Other codes that can never be billed with F64.0
These codes carry an Excludes1 note pointing at F64.0. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading F64.0 alone.
- F64.2Gender identity disorder of childhood
Risk adjustment
F64.0 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.
Medicare coverage
F64.0 is named in 8 Medicare coverage policies — 7 listing it as supporting medical necessity, and 1 listing it as NOT covered. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A52434Health and Behavior Assessment/Intervention – Medical Policy Articlenot covered
- A56850Billing and Coding: Psychiatric Partial Hospitalization Programs
- A56937Billing and Coding: Psychiatry and Psychology Services
- A57130Billing and Coding: Psychiatric Codes
How F64.0 is indexed
Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to F64.0.
- Transgender
- Transsexualism
- Disorder›gender incongruence›in adolescents and adults
- Disorder›gender-identity or -role›of adolescence or adulthood
- Dysphoria›gender›in›adolescence and adulthood
Related codes at this level
Codes that share F64. If F64.0 is not quite right, the correct code is usually one of these.
Questions about F64.0
- Is F64.0 a billable ICD-10-CM code?
- Yes. F64.0 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does F64.0 sit in the tabular list?
- Mental, Behavioral and Neurodevelopmental disorders (F01-F99), in the block Disorders of adult personality and behavior (F60-F69).
- What cannot be coded together with F64.0?
- F64.0 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.