Is F66 a billable ICD-10-CM code?

Yes. F66 is a billable, specific ICD-10-CM code and is valid for submission on a claim.

Where does F66 sit in the tabular list?

Mental, Behavioral and Neurodevelopmental disorders (F01-F99), in the block Disorders of adult personality and behavior (F60-F69).

F66

F66 — Other sexual disorders

Billable / specific codeICD-10-CM

F66 is a billable, specific ICD-10-CM code for other sexual disorders. It is valid for submission on a claim.

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

Sexual maturation disorder
Sexual relationship disorder

Risk adjustment

F66 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

F66 is named in 9 Medicare coverage policies — 7 listing it as supporting medical necessity, and 2 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
A56865Billing and Coding: Psychiatric Inpatient Hospitalizationnot covered
A57052Billing and Coding: Psychiatric Inpatient Hospitalization
A57053Billing and Coding: Psychiatric Partial Hospitalization Programs

How F66 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 F66.

Problem›psychosexual(development)
Disorder›gender-identity or -role›effect on relationship
Disorder›gender-identity or -role›uncertainty
Disorder›psychosexual›development
Disorder›relationship›due to sexual orientation
Disorder›sexual›maturation
Disorder›sexual›relationship
Problem›marital›involving›gender identity
Disorder›psychological›associated with›sexual›development
Disorder›psychological›associated with›sexual›relationship

Questions about F66

Is F66 a billable ICD-10-CM code?: Yes. F66 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does F66 sit in the tabular list?: Mental, Behavioral and Neurodevelopmental disorders (F01-F99), in the block Disorders of adult personality and behavior (F60-F69).