F79 ICD-10-CM Code: Unspecified intellectual disabilities
A clear reference for the official code description, hierarchy, and related coding information from the FY 2027 U.S. release.
Code definition
Official description
F79Unspecified intellectual disabilities
ICD-10-CM diagnosis code · United States clinical modification
Classification
Where F79 sits
- 1
Chapter 5
Mental, Behavioral and Neurodevelopmental disorders (F01-F99)
- 2
Section
Intellectual Disabilities (F70-F79)
- 3
Category F79
Unspecified intellectual disabilities
- 4
Code F79
Unspecified intellectual disabilities
Documentation details
Notes for this code
Inclusion terms
- Mental deficiency NOS
- Mental subnormality NOS
Code first
No “code first” instruction is listed for F79.
Use additional code
No “use additional code” instruction is listed for F79.
Excludes1
Conditions that should not be reported together with this code.
No Excludes1 note is listed for F79.
Excludes2
Conditions not included here that may be reported separately when present.
No Excludes2 note is listed for F79.
Transparency
Source and release
This reference is generated from Vero’s ICD-10-CM description, hierarchy, and code-note dataset. The visible content and structured data share that source.
Review the CDC/NCHS ICD-10-CM sourceCode-specific guidance
Frequently asked questions
What does ICD-10-CM code F79 mean?
F79 is the FY 2027 U.S. ICD-10-CM code for “Unspecified intellectual disabilities.”
Is F79 a billable or specific ICD-10-CM code?
Yes. In the FY 2027 reference data used on this page, F79 has no child codes and is presented as a billable/specific code. Always confirm the active code set and payer requirements before use.
Where is F79 located in ICD-10-CM?
F79 is listed in Chapter 5, Mental, Behavioral and Neurodevelopmental disorders (F01-F99), within Intellectual Disabilities (F70-F79) (F70–F79), under category F79, Unspecified intellectual disabilities.
What coding notes are listed for F79?
Its listed inclusion terms are Mental deficiency NOS; Mental subnormality NOS. No code-first instruction is listed. No Excludes1 note is listed. No Excludes2 note is listed.
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