2026 ICD-10-CM Diagnosis Code F06.71Mild neurocognitive disorder due to known physiological condition with behavioral disturbance

ICD-10-CM Codes›F01–F99›F01-F09›F06

ICD-10-CM F06.71
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

F06.71 is a billable ICD-10-CM diagnosis code for mild neurocognitive disorder due to known physiological condition with behavioral disturbance. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 974 through 976. The code is not accepted as a principal diagnosis by the Medicare Code Editor. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Neurocognitive disorders.

Code Identity

ICD-10-CM Code
F06.71
Billable Status
Yes — Valid for Submission
Code Describes
Mild neurocognitive disorder due to known physiological condition with behavioral disturbance
Short Description
Mild neurocog disord d/t known physiol cond with beh distrb
Parent Code
F06.7
Mild neurocognitive disorder due to known physiological condition

Code Classification

ChapterF01–F99Mental and behavioural disorders
SectionF01-F09Mental disorders due to known physiological conditions
CategoryF06Other mental disorders due to known physiological condition
This CodeF06.71Mild neurocognitive disorder due to known physiological condition with behavioral disturbance

Code EditsBilling

Medicare Code Editor checks that affect claim validity for F06.71.

Unacceptable principal diagnosis
There are selected codes that describe a circumstance which influences an individual's health status but not a current illness or injury, or codes that are not specific manifestations but may be due to an underlying cause. These codes are considered unacceptable as a principal diagnosis.

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Disorder(of)
      • mild neurocognitive
        • due to known physiological condition (without behavioral disturbance)
          • with behavioral disturbance
    • Impaired, impairment(function)
      • mild neurocognitive
        • due to known physiological condition (without behavioral disturbance)
          • with behavioral disturbance

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR NVS011
Neurocognitive disorders
Default principal diagnosis: inpatient No · 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.

Code History & ChangesHistory

Replacement F06.71 replaces the following previously assigned code(s):

  • G31.84 - Mild cognitive impairment of uncertain or unknown etiology
  • G31.84 - Mild cognitive impairment, so stated
FY 2023AddedAdded to the ICD-10-CM code setEffective October 1, 2022.
FY 2024–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About F06.71Overview

Is F06.71 a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report mild neurocognitive disorder due to known physiological condition with behavioral disturbance on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does F06.71 group to?

On inpatient claims, mild neurocognitive disorder due to known physiological condition with behavioral disturbance maps to MS-DRG 974, 975, 976, with relative weights from 0.8945 to 2.8860 depending on complications. Higher weights mean higher Medicare reimbursement.

Can F06.71 be a principal diagnosis?

No. The Medicare Code Editor rejects this code as a principal diagnosis because mild neurocognitive disorder due to known physiological condition with behavioral disturbance describes a circumstance that influences health status rather than a current illness. Report it as a secondary diagnosis.

Footnotes

[1] Chronic - a chronic condition code indicates a condition lasting 12 months or longer and its effect on the patient based on one or both of the following criteria:

  • The condition results in the need for ongoing intervention with medical products,treatment, services, and special equipment
  • The condition places limitations on self-care, independent living, and social interactions.