ICD-10 F84.2
ICD-10 F84.2: Rett syndrome
Category
Autism spectrum
Code Type
Mental health diagnosis
Using ICD-10 F84.2 on a Superbill
ICD-10 code F84.2 (Rett syndrome) is a autism spectrum code used on superbills for mental health therapy billing. Insurance companies require at least one ICD-10 code per superbill to process a reimbursement claim.
CPT Codes Commonly Used With F84.2
Common CPT codes paired with ICD-10 F84.2 include 90837 (60-min psychotherapy), 90834 (45-min psychotherapy), and 90791 (initial psychiatric evaluation). The CPT code reflects the service rendered, not the diagnosis.