ICD-10-CM code · FY2027

F78.A1 SYNGAP1-related intellectual disability

BillableValid for claims as a specific diagnosis code

About F78.A1

Code: F78.A1
Billable: Yes
Short description: SYNGAP1-related intellectual disability
Category: F78 Other intellectual disabilities
Block: F70-F79 Intellectual Disabilities
Chapter: 5 Mental, Behavioral and Neurodevelopmental disorders
Code set: FY2027, October 1, 2026 to September 30, 2027

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Coding notes for F78.A1

Code also Another code may be needed as well; the order depends on the encounter.

, if applicable, any associated:
autism spectrum disorder (F84.0)
autistic disorder (F84.0)
encephalopathy (G93.4-)
epilepsy and recurrent seizures (G40.-)
other pervasive developmental disorders (F84.8)
pervasive developmental disorder, NOS (F84.9)

Block F70-F79 notes (apply to every code in it)

Excludes1 Not coded here: never report these together with this code (use the code given instead).

borderline intellectual functioning, IQ above 70 to 84 (R41.83)

Code first Report the underlying condition's code before this one.

any associated physical or developmental disorders

Chapter 5 notes (apply to every code in it)

Includes Conditions this code covers.

disorders of psychological development

Excludes2 Not part of this condition, but a patient can have both: report both codes when both apply.

symptoms, signs and abnormal clinical laboratory findings, not elsewhere classified (R00-R99)

Related codes in F78.A

F78.A9 Other genetic related intellectual disabilityBillable

Latest research on intellectual disabilities

Use of a mobile self-help application is associated with increased self-esteem and quality of life in individuals with intellectual disabilitiesOct 16, 2025 · Chronic Disease
Developmental or intellectual disabilities may be associated with increased risk of long COVIDDec 28, 2023 · Chronic Disease
Children with intellectual and developmental disabilities have increased risks of depression and anxietyOct 14, 2026 · Pediatrics
2 Minute Medicine Rewind October 13, 2025Oct 13, 2025 · Weekly Rewinds
Prenatal Systemic Glucocorticoid Exposure and an Increased Risk of Future Mental DisordersJan 16, 2025

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ICD-10-CM FY2027 code set, as published by the CDC National Center for Health Statistics (NCHS) and CMS, effective October 1, 2026 to September 30, 2027. Codes, titles and notes are shown as published. Check payer rules and the official guidelines before billing. This page is not medical advice.