F06.70
Mild neurocognitive disorder due to known physiological condition without behavioral disturbance
F06.70 (also written F0670) is a billable ICD-10-CM diagnosis code for mild neurocognitive disorder due to known physiological condition without behavioral disturbance. It is part of the FY2027 code set, effective October 1, 2026. It is one of the 12 codes in category F06 (Other mental disorders due to known physiological condition). The Alphabetic Index lists it under 2 entries. Its coding notes include a Code first instruction, 10 Excludes1 entries and 4 Excludes2 entries.
Code first
If the underlying condition listed here is present and known, sequence it first.
- the underlying physiological condition, such as:
- Alzheimer's disease (G30.-)
- human immunodeficiency virus [HIV] disease (B20)
- Huntington's disease (G10)
- Neurocognitive disorder with Lewy bodies (G31.83)
- other frontotemporal neurocognitive disorder (G31.09)
- Parkinson's disease (G20.-)
- systemic lupus erythematosus (M32.-)
- traumatic brain injury (S06.-)
- vitamin B deficiency (E53.-)
- the underlying physiological condition
Excludes1
Not coded here. The listed conditions generally should not be reported together.
- age related cognitive decline (R41.81)
- altered mental status (R41.82)
- cerebral degeneration (G31.9)
- change in mental status (R41.82)
- cognitive deficits following (sequelae of) cerebral hemorrhage or infarction (I69.01-I69.11-, I69.21-I69.31-, I69.81- I69.91-)
- dementia (F01.-, F02.-, F03.-)
- mild cognitive impairment due to unknown or unspecified etiology (G31.84)
- neurologic neglect syndrome (R41.4)
- personality change, nonpsychotic (F68.8)
Excludes2
Not included here. Both codes may be reported if the patient has both conditions.
Also from chapter/block level (1 note)
- symptoms, signs and abnormal clinical laboratory findings, not elsewhere classified (R00-R99)
Care settings
How CMS programs treat this code. These are CMS claim edits and list entries, not coverage or eligibility rules.
Hospice: not accepted as primary
Not accepted as the principal diagnosis on a hospice claim (bill types 081x and 082x). The Integrated OCE returns an edit for this code.
Reason: Supplementary or additional code, not allowed as principal diagnosis.
IPF Primary
IPF MS-DRG adjustment. A principal diagnosis of this code groups to this MS-DRG:
| MS-DRG | Description | Factor |
|---|---|---|
| 884 | Organic disturbances & intellectual disabilities | 1.08 |
Includes
Further defines or gives examples of the content of the category.
- 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 disorders due to somatic illness
- mental disorders due to systemic disease affecting the brain
Also from chapter/block level (1 note)
- disorders of psychological development
Inclusion terms
Conditions classified to this code.
- Mild neurocognitive disorder due to known physiological condition, NOS
Notes
Also from chapter/block level (1 note)
- This block comprises a range of mental disorders grouped together on the basis of their having in common a demonstrable etiology in cerebral disease, brain injury, or other insult leading to cerebral dysfunction. The dysfunction may be primary, as in diseases, injuries, and insults that affect the brain directly and selectively; or secondary, as in systemic diseases and disorders that attack the brain only as one of the multiple organs or systems of the body that are involved.
Alphabetic Index terms
Terms the official Alphabetic Index lists for this code. 2 entries