ICD-10 F78.A1
Billable / SpecificSYNGAP1-related intellectual disability
About ICD-10-CM F78.A1
ICD-10-CM code F78.A1 represents SYNGAP1-related intellectual disability. This is a billable/specific code in the Mental, Behavioral, and Neurodevelopmental chapter (block F78). The 2026 edition of ICD-10-CM F78.A1 became effective on October 1, 2025.
Coding Notes
Code Also
- , 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)
Medicare LCD Coverage for F78.A1
Local Coverage Determinations (LCDs) from CMS MACs that list F78.A1 as a covered diagnosis.
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Commercial Payer Coverage
Coverage policies from major commercial payers referencing F78.A1.
5 Medicare
CPT Codes Commonly Billed with F78.A1
Procedures frequently paired with this diagnosis based on PayerReady's Dx↔Px linkage data.
We don't have CPT pairings indexed for this specific code yet. Use the CPT search above to find common procedures, or check your payer's published medical policy for code-specific guidance.
Codes Adjacent To F78.A1
Other codes in section F70-F79 (Intellectual disabilities).
ICD-10 F78.A1, Billing FAQ
Is ICD-10 code F78.A1 billable? +
Yes, F78.A1 is a billable ICD-10-CM code that can appear as a primary or secondary diagnosis on claims.
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Reviewed by the PayerReady Medical Coding Team
Verified against the CMS 2026 code set on June 1, 2026.
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