F06.7 vs F09
F06.7 (Mild neurocognitive disorder due to known physiological condition) compared with F09 (Unspecified mental disorder due to known physiological condition), from the official CMS tabular data. Do not report these codes together: the official tabular list marks them Excludes1.
Can these codes be reported together?
No — do not report together. F09 carries an Excludes1 note covering F06.7: “mild neurocognitive disorder due to known physiological condition (F06.7-)”
Sole exception: when the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).
Side by side
| F06.7Mild neurocognitive disorder due to known physiological condition | F09Unspecified mental disorder due to known physiological condition | |
|---|---|---|
| Billing status | Non-billable header | Billable |
| Classification | F01-F99 — Mental, Behavioral and Neurodevelopmental Disorders (F01-F99) | F01-F99 — Mental, Behavioral and Neurodevelopmental Disorders (F01-F99) |
| Definition | Mild neurocognitive disorder due to known physiological condition is a non-billable ICD-10-CM category code (F06.7). | Unspecified mental disorder due to known physiological condition is a billable ICD-10-CM diagnosis code (F09). |
| Includes | mental disorders due to endocrine disorder mental disorders due to exogenous hormone mental disorders due to exogenous toxic substance mental disorders due to primary cerebral disease | Mental disorder NOS due to known physiological condition Organic brain syndrome NOS Organic mental disorder NOS Organic psychosis NOS |
| Code first | the underlying physiological condition, such as: Alzheimer's disease (G30.-) | the underlying physiological condition |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources