ICD-10 Code F94.0 – Selective Mutism (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code F94.0 – Selective mutism
What it is
Selective mutism is an anxiety-related condition in which a person consistently does not speak in certain settings, such as school, despite speaking normally elsewhere. Use this code when the pattern is persistent and not explained by a language or hearing problem.
Clinical signs
Typical signs include silence in specific social situations, limited verbal response, and clear ability to speak in more comfortable environments. Clinical features vary; refer to documentation.
When to use this code
Use F94.0 when the record documents selective mutism as the diagnosed condition, especially in children with normal speech at home but little or no speech at school. It may also apply when the clinician notes persistent situational speaking failure with functional impact. Check documentation for duration and exclusion of other causes.
Do not use for
Do not use this code for ordinary shyness, temporary refusal to speak, or speech loss caused by neurologic, developmental, hearing, or language disorders. If the diagnosis is unclear, check documentation.
Coding tip
Code F94.0 only when the provider clearly documents selective mutism, not just social anxiety or quiet behavior.