ICD-10 Code F06.71 – Mild neurocognitive disorder due to known physiological condition with behavioral disturbance (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code F06.71 – Mild neurocognitive disorder due to known physiological condition with behavioral disturbance
What it is
This code identifies a mild decline in memory, attention, or other thinking skills caused by a known medical condition, along with behavioral symptoms. The impairment is present but does not meet criteria for major neurocognitive disorder.
Clinical signs
Typical findings include modest cognitive decline noticed by the patient, family, or clinician, with preserved independence in daily activities. Behavioral disturbance may include agitation, mood change, apathy, or disinhibition; clinical features vary, so refer to documentation.
When to use this code
Use F06.71 when the record links mild neurocognitive impairment to a documented physiological cause such as a neurologic, systemic, or metabolic condition. The note should also support behavioral disturbance and show that the cognitive deficits are not severe enough for major neurocognitive disorder.
Apply this code when the provider explicitly documents the diagnosis or clearly describes the condition in assessment and plan. Check documentation if the cause, severity, or behavioral component is unclear.
Do not use for
Do not use this code for delirium, major neurocognitive disorder, or nonspecific memory complaints without a documented underlying condition. Do not assign it if behavioral disturbance is not supported in the record.
Coding tip
Code the underlying physiological condition first when instructed, and confirm that the behavioral disturbance is documented, not assumed.