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2. ICD-10 Codes
3. Chapter - F01-F99
4. Section - F80-F89
5. Category - F84
6. F84.2

F84.2 - Rett's syndrome

• Applicable to Rett's syndrome
• The 2025 edition of ICD10-CM F84.2 became effective on October 1, 2024.
• This is the American ICD10-CM version of F84.2 - other international versions of ICD10 F84.2 may differ.
• F84.2 is a Billable / Specific ICD10-CM code that can be used to indicate a diagnosis for reimbursement purposes.

Type 1 Excludes

• Asperger's syndrome (F84.5)
• Autistic disorder (F84.0)
• Other childhood disintegrative disorder (F84.3)

The following codes above F84.2 contain annotation back-references that may be applicable to F84.2:

• Chapter: F01-F99 - Mental, Behavioral and Neurodevelopmental disorders
• Section: F80-F89 - Pervasive and specific developmental disorders
• Category: F84 - Pervasive developmental disorders

Browse other similar CM codes:

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.