F70 Mild intellectual disabilities

The ICD-10-CM code for Mild intellectual disabilities is F70 (FY2026). It is a billable, claim-ready diagnosis code.

Classification

Chapter

5: Mental, Behavioral and Neurodevelopmental disorders (F01-F99)

Section

F70-F79: Intellectual Disabilities (F70-F79)

Category F70

1 code (1 billable)

FY2026 Status

Stable since FY2024

Also Known As

ICD-10-CM Alphabetic Index entries that lead to F70:

• Moron (I.Q.50-69)
• Feeble-minded
• I.Q. › 50-69
• Weak, weakening, weakness (generalized) › mind
• Defect, defective › high grade
• Disability, disabilities › intellectual › mild (I.Q.50-69)

Inclusion Terms

• IQ level 50-55 to approximately 70
• Mild mental subnormality

U.S. Hospital Utilization

• An estimated 19,880 U.S. inpatient stays in 2023 included F70 among the documented diagnoses.
• 75 stays listed it as the principal diagnosis.

Source: National Inpatient Sample (NIS), Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality, 2016–2023. National survey-weighted estimates.

Official Coding Guidelines

Pain disorders related to psychological factors (TOC entry)

a. Pain disorders related to psychological factors ..................................................................... 43

Psychoactive substance use disorders (TOC entry)

b. Mental and behavioral disorders due to psychoactive substance use ................................... 43

Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026

References

• CMS — ICD-10-CM Official Code Set and Guidelines, FY2026
• CDC/NCHS — ICD-10-CM Files and Browser Tool
• AHRQ — HCUP National Inpatient Sample, Frequencies by Diagnosis Code (2016–2023)