DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

QA0 Neurodevelopmental disorders related to specific genetic pathogenic variants

  • Header · not billable

QA0 is not billable. The category heads 13 billable codes in FY2027, grouped under 2 subdivisions.

Index → code

Where it sits

  1. Chapter 17 Congenital malformations, deformations, chromosomal abnormalities, and genetic disorders (Q00-QA1)
  2. QA0-QA1 Genetic disorders, not elsewhere classified (QA0-QA1)
  3. QA0 Neurodevelopmental disorders related to specific genetic pathogenic variants
Billable codes
13
Subdivisions
2
CC / MCC codes
13 / 0
HCC V28 codes
0
New FY2027
0
Index entries
29

Codes in QA0

  1. QA0.0
    Neurodevelopmental disorders related to pathogenic variants in specific genes
    Header
  2. QA0.01
    Neurodevelopmental disorders related to pathogenic variants in certain specific genes
    Header
  3. QA0.010
    Neurodevelopmental disorders, related to pathogenic variants in ion channel genes
    Header
  4. QA0.0101
    SCN2A-related neurodevelopmental disorder
    BillableCCExempt
  5. QA0.0102
    CACNA1A-related neurodevelopmental disorder
    BillableCCExempt
  6. QA0.0109
    Neurodevelopmental disorder related to pathogenic variant in other ion channel gene
    BillableCCExempt
    Inclusion terms 1

    Inclusion terms

    • SCN8A-related neurodevelopmental disorder
  7. QA0.011
    Neurodevelopmental disorders, related to pathogenic variants in glutamate receptor genes
    BillableCCExempt
  8. QA0.012
    Neurodevelopmental disorders, related to pathogenic variants in other receptor genes
    BillableCCExempt
  9. QA0.013
    Neurodevelopmental disorders, related to pathogenic variants in other transporter and solute carrier genes
    Header
  10. QA0.0131
    SLC6A1-related disorder
    BillableCCExempt
    Inclusion terms 1

    Inclusion terms

    • GABA transporter 1 deficiency
  11. QA0.0139
    Neurodevelopmental disorder, related to pathogenic variant in other transporter or solute carrier gene
    BillableCCExempt
  12. QA0.014
    Neurodevelopmental disorders, related to pathogenic variants in synapse related genes
    Header
  13. QA0.0141
    Syntaxin-binding protein 1-related disorder
    BillableCCExempt
    Inclusion terms 1

    Inclusion terms

    • STXBP1-related disorders
  14. QA0.0142
    DLG4-related synaptopathy
    BillableCCExempt
  15. QA0.0149
    Neurodevelopmental disorder, related to pathogenic variant in other synapse related gene
    BillableCCExempt
    Inclusion terms 1

    Inclusion terms

    • Other genetic synaptopathy
  16. QA0.015
    Neurodevelopmental disorders, related to genes associated with transcription and gene expression
    Header
  17. QA0.0151
    FOXG1 syndrome
    BillableCCExempt
    Inclusion terms 3

    Inclusion terms

    • FOXG1-related disorder
    • FOXG1-related encephalopathy
    • FOXG1-related neurodevelopmental disorder
  18. QA0.0159
    Neurodevelopmental disorder, related to other genes associated with transcription and gene expression
    BillableCCExempt
  19. QA0.8
    Other neurodevelopmental disorders related to pathogenic variants in other specific genes
    BillableCCExempt

CC/MCC: as a secondary diagnosis, unless the principal diagnosis is on the code’s PDX exclusion list (MS-DRG v44 Appendix C; list on the code card).

Sources of each column.

Instructions

At QA0

Code also

  • , if applicable, any associated conditions, such as:
  • attention-deficit hyperactivity disorders (F90.-) F90
  • autism spectrum disorder (F84.0) F84.0
  • developmental and epileptic encephalopathy (G93.45) G93.45
  • epilepsy, by specific type (G40.-) G40
  • intellectual disabilities (F70-F79) F70 F79
  • pervasive developmental disorders (F84.-) F84

Notes that also apply

Chapter 17 instructions (Notes 1, Excludes2 1): printed on the chapter 17 page.

Index entries

  • Deficiency, deficientGABA transporter 1 → QA0.0131
  • SynaptopathyDLG4-related → QA0.0142
  • Synaptopathyspecified NEC → QA0.0149
  • Disorder (of)FOXG1-related → QA0.0151
  • Encephalopathy (acute)FOXG1-related → QA0.0151
  • SyndromeFOXG1 → QA0.0151
  • Disorder (of)neurodevelopmentalSCN2A-related → QA0.0101
  • Disorder (of)neurodevelopmentalCACNA1A-related → QA0.0102
  • Disorder (of)neurodevelopmentalGRIN1-related → QA0.011
  • Disorder (of)neurodevelopmentalGRIN2A-related → QA0.011
  • Disorder (of)neurodevelopmentalGRIN2B-related → QA0.011
  • Disorder (of)neurodevelopmentalGRIN2D-related → QA0.011
  • Disorder (of)neurodevelopmentalGRIA1-related → QA0.011
  • Disorder (of)neurodevelopmentalGRIA2-related → QA0.011
  • Disorder (of)neurodevelopmentalGRIA3-related → QA0.011
  • Disorder (of)neurodevelopmentalGRIA4-related → QA0.011
  • Disorder (of)neurodevelopmentalGRIK2-related → QA0.011
  • Disorder (of)neurodevelopmentalSLC6A1-related → QA0.0131
  • Disorder (of)neurodevelopmentalSTXBP1-related → QA0.0141
  • Disorder (of)neurodevelopmentalsyntaxin-binding protein 1-related → QA0.0141
  • Disorder (of)neurodevelopmentalDLG4-related synaptopathy → QA0.0142
  • Disorder (of)neurodevelopmentalFOXG1-related → QA0.0151
  • Disorder (of)neurodevelopmentalotherion channel gene related → QA0.0109
  • Disorder (of)neurodevelopmentalotherglutamate receptor, ionotropic, related → QA0.011
  • Disorder (of)neurodevelopmentalotherreceptor gene related → QA0.012
  • Disorder (of)neurodevelopmentalothertransporter or solute carrier gene related → QA0.0139
  • Disorder (of)neurodevelopmentalothersynapse related gene → QA0.0149
  • Disorder (of)neurodevelopmentalotherrelated to other genes associated with transcription and gene expression → QA0.0159
  • Disorder (of)neurodevelopmentalspecified NECrelated to pathogenic variants in specific genes NEC → QA0.8

NCHS Alphabetic Index. Index first, then the Tabular List.

Hierarchy