DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Block · Chapter 17

QA0-QA1 Genetic disorders, not elsewhere classified (QA0-QA1)

Block QA0-QA1 groups 2 categories with 18 billable codes in FY2027. 5 codes are new this year.

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)

Neighbouring blocks

Categories
2
Billable codes
18
CC codes
13
MCC codes
0
HCC V28 codes
0
New FY2027
5

Categories in QA0-QA1

  • QA0

    Neurodevelopmental disorders related to specific genetic pathogenic variants

    SyndromeFOXG1 → QA0.0151

    • 13 billable codes
    • 13 CC
  • QA1

    Genetic disorders associated with neoplasms, not elsewhere classified New FY2027

    SyndromeLi-Fraumeni → QA1.792

    • 5 billable codes
    • 5 new

FY2027 changes in QA0-QA1

  • QA1.71 Lynch syndrome New FY2027
  • QA1.790 Familial cancer syndrome with pathogenic BRCA1 mutation New FY2027
  • QA1.791 Familial cancer syndrome with pathogenic BRCA2 mutation New FY2027
  • QA1.792 Li Fraumeni syndrome New FY2027
  • QA1.798 Other inherited neoplasm predisposition syndrome of multiple systems New FY2027

Index main terms

  • Disorder (of) → QA0 (24 entries)
  • Syndrome → QA0, QA1 (10 entries)
  • Synaptopathy → QA0 (2 entries)
  • Deficiency, deficient → QA0 (1 entry)
  • Encephalopathy (acute) → QA0 (1 entry)
  • Susceptibility to disease, genetic → QA1 (1 entry)

Block instructions

Notes that also apply

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