2026 ICD-10-CM Diagnosis Code F70Mild intellectual disabilities

ICD-10-CM Codes›F01–F99›F70-F79›F70

ICD-10-CM F70
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

F70 is a billable ICD-10-CM diagnosis code for mild intellectual disabilities. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026). Coders also document this condition as micrognathia, recurrent infections, behavioral abnormalities, mild intellectual disability syndrome. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Neurodevelopmental disorders.

Code Identity

ICD-10-CM Code
F70
Billable Status
Yes — Valid for Submission
Code Describes
Mild intellectual disabilities
Chapter
F70-F79
Intellectual disabilities

Code Classification

ChapterF01–F99Mental and behavioural disorders
SectionF70-F79Intellectual disabilities
CategoryF70Mild intellectual disabilities
This CodeF70Mild intellectual disabilities

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Micrognathia, recurrent infections, behavioral abnormalities, mild intellectual disability syndrome
  • Mild intellectual disability
  • Primary microcephaly, mild intellectual disability, young-onset diabetes syndrome

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Inclusion Terms

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

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

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

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR MBD014
Neurodevelopmental disorders
Default principal diagnosis: inpatient Yes · outpatient Yes

Patient EducationClinical

Developmental Disabilities

Developmental disabilities are conditions that are usually present at birth. They can affect a child's growth and development. These conditions can cause physical, learning, language, or behavior issues. They can include:

The full article covers:

  • What are developmental disabilities?
  • What causes developmental disabilities?
  • How are developmental disabilities diagnosed?
  • What are the treatments for developmental disabilities?

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert F70 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
317 Mild intellect disabilty
Exact Match The mapping is direct, with no qualifiers.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About F70Overview

Is F70 (Mild intellectual disabilities) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report mild intellectual disabilities on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What is the ICD-9 equivalent of F70?

Under the General Equivalence Mappings, mild intellectual disabilities converts to ICD-9-CM 317 (mild intellect disabilty). The mapping is a direct match.

Footnotes

[1] Chronic - a chronic condition code indicates a condition lasting 12 months or longer and its effect on the patient based on one or both of the following criteria:

  • The condition results in the need for ongoing intervention with medical products,treatment, services, and special equipment
  • The condition places limitations on self-care, independent living, and social interactions.