ICD-10 Code F70 – Mild Intellectual Disabilities (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code F70 – Mild intellectual disabilities
What it is
F70 identifies mild intellectual disability, a developmental condition with limitations in intellectual functioning and adaptive skills. It usually becomes apparent during childhood and affects learning, reasoning, and everyday independence.
Clinical signs
Typical findings include slower academic progress, difficulty with abstract thinking, and need for support with complex tasks. Clinical features vary; refer to documentation.
When to use this code
Use F70 when the record clearly documents mild intellectual disability or mild intellectual developmental disorder. You should code it when the diagnosis is established by a qualified clinician and the severity is specified. Check documentation if the note only mentions learning problems without a confirmed diagnosis.
Do not use for
Do not use this code for temporary learning difficulties, isolated speech delay, or unspecified intellectual disability. If the severity is not documented, check documentation.
Coding tip
Assign F70 only when the provider documents the condition and its mild severity, not just developmental delay or academic underachievement.