QA0.0131 ICD-10-CM Code: SLC6A1-related disorder
HCC Buddy Code Card
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FY 2026 Apr update / Congenital malformations, deformations and chromosomal abnormalities (Q00-QA0) / Genetic disorders, not elsewhere classified (QA0)
QA0.0131
Billable / SpecificICD-10-CMOfficial ICD-10-CMCodebook guidanceSLC6A1-related disorder
A neurodevelopmental disorder caused by mutations in the SLC6A1 gene, which affects the transport of neurotransmitters in the brain and can cause seizures and developmental delays.
CMS-HCC V28
N/A—
Not mapped
CMS-HCC V24
N/A—
Not mapped
ACA/HHS
MappedHCC 97
Varies by metal level
ESRD/PACE
N/A—
Not mapped
RXHCC
N/A—
Not mapped
Code Book Path
Inclusion Terms
Official- GABA transporter 1 deficiency
Excludes 2
OfficialICD-10-CM does not list Excludes 2 notes for QA0.0131 in this effective period.
Related Child Codes
Includes
OfficialICD-10-CM does not list Includes notes for QA0.0131 in this effective period.
Excludes 1
OfficialICD-10-CM does not list Excludes 1 notes for QA0.0131 in this effective period.
Code First
OfficialICD-10-CM does not list Code First sequencing instructions for QA0.0131 in this effective period.
Use Additional
OfficialICD-10-CM does not list Use Additional Code instructions for QA0.0131 in this effective period.
Code Also
OfficialICD-10-CM does not list Code Also instructions for QA0.0131 in this effective period.
Buddy Documentation Tip
Last updated: FY2026 ICD-10-CM Apr update, Apr 1, 2026 through Sep 30, 2026. CMS-HCC V28 is 100% phased in for payment year 2026.
Is QA0.0131 an HCC code?
No. QA0.0131 is a billable ICD-10-CM code but does not map to any HCC category in V28, V24, ESRD, or RxHCC.
Coder workflow notes
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This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).
What This Code Means
QA0.0131 is the ICD-10-CM diagnosis code for slc6a1-related disorder. A neurodevelopmental disorder caused by mutations in the SLC6A1 gene, which affects the transport of neurotransmitters in the brain and can cause seizures and developmental delays. QA0.0131 sits in the ICD-10-CM chapter for congenital malformations, deformations and chromosomal abnormalities (q00-qa0), within the section covering genetic disorders, not elsewhere classified (qa0).
QA0.0131 is a billable ICD-10-CM code but does not map to a payment HCC under the CMS-HCC V28, V24, ESRD, or RxHCC risk adjustment models. It can be reported on Medicare Advantage encounter data submissions but it does not contribute to a beneficiary's RAF score and therefore does not affect risk-adjusted payments to the plan.
Verify genetic testing confirms SLC6A1 pathogenic variant is documented.
HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for QA0.0131 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •Verify genetic testing confirms SLC6A1 pathogenic variant is documented
- •Code seizure disorder and other manifestations with additional diagnosis codes