2026 ICD-10-CM Diagnosis Code F70Mild intellectual disabilities
ICD-10-CM Codes›F01–F99›F70-F79›F70
- Billable — Valid for Submission
- Chronic Condition
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) and groups to MS-DRG 884. 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.
F70 does not risk-adjust for Medicare Advantage under the CMS-HCC V28 model. It still risk-adjusts in the RxHCC Part D (V08) category 148 for payment year 2026.
Code Identity
Code Classification
Medicare Risk Adjustment (HCC)Billing
F70 does not risk-adjust for Medicare Advantage under the CMS-HCC V28 model, but it maps to payment categories in the other CMS models shown below.
Source: CMS Payment Year 2026 risk adjustment mappings and model software. Weights are relative factors, not dollar amounts; a beneficiary's total RAF also includes demographics and interactions. Browse all CMS-HCC categories.
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
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
Feeble-minded F70
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
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.
Code HistoryHistory
Questions About F70Overview
What is the ICD-10 code for mild intellectual disabilities?
The ICD-10-CM code for mild intellectual disabilities is F70. It is billable on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
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 MS-DRG does F70 group to?
When mild intellectual disabilities is the principal diagnosis on an inpatient stay, it groups to MS-DRG 884 (organic Disturbances and Intellectual Disability), which carries a relative weight of 1.6089. Higher weights mean higher Medicare reimbursement.
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.
Does F70 risk-adjust for Medicare Advantage payment?
Not for Medicare Advantage: F70 maps to no category in the CMS-HCC V28 model. It still risk-adjusts in the RxHCC Part D (V08) category 148 (Mild or Unspecified Intellectual Disability/Developmental Disorder).
