2027 ICD-10-CM Diagnosis Code F63.9Impulse disorder, unspecified
ICD-10-CM Codes›F01–F99›F60-F69›F63
- Billable — Valid for Submission
- Not Chronic
F63.9 is a billable ICD-10-CM diagnosis code for impulse disorder, unspecified. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 886. Coders also document this condition as impulse control disorder. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Disruptive, impulse-control and conduct disorders.
F63.9 does not risk-adjust for Medicare Advantage under the CMS-HCC V28 model. It still risk-adjusts in the RxHCC Part D (V08) category 133 for payment year 2027.
Code Identity
Code Classification
Medicare Risk Adjustment (HCC)Billing
F63.9 does not risk-adjust for Medicare Advantage under the CMS-HCC V28 model, but it maps to payment categories in the other CMS models shown below.
Source: CMS Payment Year 2027 risk adjustment mappings and model software. Weights are relative factors, not dollar amounts; a beneficiary's total RAF also includes demographics and interactions. Browse all CMS-HCC categories.
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Impulse control disorder
- Impulse control disorder caused by cocaine
- Impulse control disorder caused by psychoactive substance
- Impulse control disorder caused by stimulant
- Impulse control disorder caused by synthetic cathinone
- Impulse control disorder in remission
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to F63.9: its own notes plus those printed at F63 and 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.
- 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.
- Impulse control 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.
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.
Disorder (of) See Also: Disease;
compulsive F63.9
habit (and impulse) F63.9
impulse (control) F63.9
Disturbance (s) See Also: Disease;
conduct See Also: Disorder, conduct; F91.9
compulsive F63.9
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
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 F63.9 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About F63.9Overview
What is the ICD-10 code for impulse disorder, unspecified?
The ICD-10-CM code for impulse disorder, unspecified is F63.9 (sometimes written as F639). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is F63.9 (Impulse disorders) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report impulse disorder, unspecified on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does F63.9 group to?
When impulse disorder, unspecified is the principal diagnosis on an inpatient stay, it groups to MS-DRG 886 (behavioral and Developmental Disorders), which carries a relative weight of 1.6455. Higher weights mean higher Medicare reimbursement.
What is the ICD-9 equivalent of F63.9?
Under the General Equivalence Mappings, impulse disorder, unspecified converts to ICD-9-CM 312.30 (impulse control dis NOS). The mapping is a direct match.
Does F63.9 risk-adjust for Medicare Advantage payment?
Not for Medicare Advantage: F63.9 maps to no category in the CMS-HCC V28 model. It still risk-adjusts in the RxHCC Part D (V08) category 133 (Anxiety and Other Psychiatric Disorders).
