F78.A – Other genetic related intellectual disabilities
ICD-10-CM 2027 diagnosis code · Intellectual Disabilities
ICD-10-CM code
F78.A
- Code
F78.A(claims format:F78A)- Description
- Other genetic related intellectual disabilities
- Billable
- No – use a more specific code below
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 5. Mental, Behavioral and Neurodevelopmental disorders (F01-F99)
- Block
- F70-F79 Intellectual Disabilities
- Parent codes
- F78
Billable codes under F78.A
F78.A is a header code and cannot be used on claims. Choose the most specific code:
Notes inherited from parent codes
Instructional notes at a category or block level apply to every code below it.
Block F70-F79
Excludes1 (not coded here):
- borderline intellectual functioning, IQ above 70 to 84 (R41.83)
Code first:
- any associated physical or developmental disorders
Frequently asked questions
What is ICD-10 code F78.A?
F78.A is the ICD-10-CM code for other genetic related intellectual disabilities, in the block F70-F79 (Intellectual Disabilities).
Is F78.A a billable code?
No. F78.A is a header code with more specific child codes; report one of the billable codes listed above.
What category does F78.A belong to?
It belongs to category F78 – Other intellectual disabilities.
Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.