2027 ICD-10-CM Diagnosis Code F63.81Intermittent explosive disorder
ICD-10-CM Codes›F01–F99›F60-F69›F63
- Billable — Valid for Submission
- Chronic Condition
F63.81 is a billable ICD-10-CM diagnosis code for intermittent explosive disorder. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 883. Coders also document this condition as emotionally unstable personality disorder. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Disruptive, impulse-control and conduct disorders.
F63.81 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
F63.81 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.
- Emotionally unstable personality disorder
- Explosive personality disorder
- Intermittent explosive disorder
- Isolated explosive disorder
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to F63.81: 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
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;
intermittent explosive F63.81
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Clinical InformationClinical
Intermittent Explosive Disorder
a disorder characterized by recurrent episodes of serious assaultive acts or destruction of property due to a failure to resist aggressive impulses; the degree of aggression during these episodes is grossly out of proportion to any psychosocial provocation. the aggressive episodes are not etiologically linked to another mental disorder, a general medical condition, or substance use.
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 F63.81 to ICD-9-CMHistory
Code HistoryHistory
Questions About F63.81Overview
What is the ICD-10 code for intermittent explosive disorder?
The ICD-10-CM code for intermittent explosive disorder is F63.81 (sometimes written as F6381). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is F63.81 (Other impulse disorders) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report intermittent explosive disorder on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does F63.81 group to?
When intermittent explosive disorder is the principal diagnosis on an inpatient stay, it groups to MS-DRG 883 (disorders of Personality and Impulse Control), which carries a relative weight of 1.7398. Higher weights mean higher Medicare reimbursement.
What is the ICD-9 equivalent of F63.81?
Under the General Equivalence Mappings, intermittent explosive disorder converts to ICD-9-CM 312.34 (intermitt explosive dis) and 312.35 (isolated explosive dis). The mapping is approximate, so confirm the match fits the documentation.
Does F63.81 risk-adjust for Medicare Advantage payment?
Not for Medicare Advantage: F63.81 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).
