Unspecified intellectual disabilities
Billable / specific
F79 is a billable, specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes in FY2027.
Inclusion terms
Includes
- disorders of psychological development
Applicable to
- Mental deficiency NOS
- Mental subnormality NOS
Excludes1
Not coded here — never report together with this code.
- borderline intellectual functioning, IQ above 70 to 84 (R41.83)
Excludes2
Not included here — may be reported together when both conditions exist.
Code first
Sequence the underlying condition first.
- any associated physical or developmental disorders
Also known as
- Mental deficiency NOS
- Mental subnormality NOS
- Development, tardy, mental
- Disability, disabilities, intellectual