2027 ICD-10-CM Diagnosis Code F66Other sexual disorders

ICD-10-CM Codes›F01–F99›F60-F69›F66

ICD-10-CM F66
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

F66 is a billable ICD-10-CM diagnosis code for other sexual disorders. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 887. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Miscellaneous mental and behavioral disorders/conditions.

Code Identity

ICD-10-CM Code
F66
Billable Status
Yes — Valid for Submission
Code Describes
Other sexual disorders
Short Description
Other sexual disorders
Same as the full description in the CMS dataset.
Chapter
F60-F69
Disorders of adult personality and behavior

Code Classification

ChapterF01–F99Mental and behavioural disorders
SectionF60-F69Disorders of adult personality and behavior
CategoryF66Other sexual disorders
This CodeF66Other sexual disorders

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Abnormal development of sexuality
  • Abnormal sexual state
  • Abnormal sexual state and development
  • Chondrodysplasia with disorder of sex development syndrome
  • Difficulty expressing intimacy
  • Dissatisfied with sexual relationship
  • Ego-dystonic sexual orientation
  • Ego-syntonic sexual orientation
  • Erotic feeling
  • Erotic interest - finding
  • Female hypererotism
  • Increased libido
  • Inhibited sexual desire
  • Lecherism
  • Libido - finding
  • Male hypererotism
  • Obscene thoughts
  • Overtly sexualized behavior in childhood
  • Pure gonadal dysgenesis
  • Pure gonadal dysgenesis 46,XY
  • Sexual exposure
  • Sexual frustration
  • Sexual neglect
  • Sexual nondevelopment
  • Sexual overexposure
  • Sexual relationship problem
  • Sexual relationship problem due to gender identity confusion
  • Sexual relationship problem due to sexual orientation confusion
  • Sexual value system confusion
  • Sexuality related problem
  • Sexualized behavior
  • Sexually disinhibited behavior
  • Sexually obscene thoughts
  • Uncontrollable sexual urge

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to F66: 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.

  • Sexual maturation disorder
  • Sexual relationship disorder

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.

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name F66, its category, or a range that includes it.

Excludes2 1

These codes carry an Excludes2 note naming F66: its condition is not part of those codes, and both may be reported when the patient has both.

  • F64.2 Gender identity disorder of childhood
    sexual maturation disorder (F66)

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

Patient EducationClinical

Mental Disorders

Mental disorders (or mental illnesses) are conditions that affect your thinking, feeling, mood, and behavior. They may happen over a short period of time or come and go. Some can be chronic (long-lasting). They can affect your ability to relate to others and function each day..

The full article covers:

  • What are mental disorders?
  • What are some types of mental disorders?
  • What causes mental disorders?
  • Who is at risk for mental disorders?
  • How are mental disorders diagnosed?
  • What are the treatments for mental disorders?

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert F66 to ICD-9-CMHistory

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

ICD-9-CM
302.89 Psychosexual dis NEC
Approximate The match is approximate rather than exact.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About F66Overview

What is the ICD-10 code for other sexual disorders?

The ICD-10-CM code for other sexual disorders is F66. It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

Is F66 (Other sexual disorders) a billable code?

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

What MS-DRG does F66 group to?

When other sexual disorders 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 F66?

Under the General Equivalence Mappings, other sexual disorders converts to ICD-9-CM 302.89 (psychosexual dis NEC). The mapping is approximate, so confirm the match fits the documentation.