DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

QA1 Genetic disorders associated with neoplasms, not elsewhere classified

  • Header · not billable
  • New in FY2027

QA1 is not billable. The category heads 5 billable codes in FY2027, grouped under 1 subdivision.

New in FY2027 (effective October 1, 2026).

FY2027 changes under QA1: 5 billable codes added. All FY2027 changes.

Index → code

  • SyndromeLi-Fraumeni → QA1.792
  • SyndromeBRCA1-cancer predisposition → QA1.790
  • SyndromeBRCA2-cancer predisposition → QA1.791

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. QA1 Genetic disorders associated with neoplasms, not elsewhere classified
Billable codes
5
Subdivisions
1
CC / MCC codes
0 / 0
HCC V28 codes
0
New FY2027
5
Index entries
10

Codes in QA1

  1. QA1.7
    Inherited neoplasm predisposition syndromes involving multiple systems, not elsewhere classified New FY2027
    Header
  2. QA1.71
    Lynch syndrome New FY2027
    BillableExempt
    Inclusion terms 6

    Inclusion terms

    • Hereditary nonpolyposis colorectal cancer susceptibility
    • Lynch syndrome due to EPCAM
    • Lynch syndrome due to MLH1
    • Lynch syndrome due to MSH2
    • Lynch syndrome due to MSH6
    • Lynch syndrome due to PMS2
  3. QA1.79
    Other inherited neoplasm predisposition syndrome of multiple systems New FY2027
    Header
  4. QA1.790
    Familial cancer syndrome with pathogenic BRCA1 mutation New FY2027
    BillableExempt
    Inclusion terms 2

    Inclusion terms

    • BRCA1-cancer predisposition syndrome
    • Hereditary breast and ovarian cancer syndrome with pathogenic BRCA1 mutation
  5. QA1.791
    Familial cancer syndrome with pathogenic BRCA2 mutation New FY2027
    BillableExempt
    Inclusion terms 2

    Inclusion terms

    • BRCA2-cancer predisposition syndrome
    • Hereditary breast and ovarian cancer syndrome with pathogenic BRCA2 mutation
  6. QA1.792
    Li Fraumeni syndrome New FY2027
    BillableExempt
  7. QA1.798
    Other inherited neoplasm predisposition syndrome of multiple systems New FY2027
    BillableExempt

Sources of each column.

Instructions

At QA1

Excludes2

  • multiple endocrine neoplasia [MEN] syndromes (E31.2-) E31.2

Code also

  • , if applicable, any associated conditions, such as:
  • genetic susceptibility to malignant neoplasm by site (Z15.0-) Z15.0
  • malignant neoplasms (C00.0-C96.9) C00.0 C96.9
  • personal history of malignant neoplasm (Z85.-) Z85

Notes that also apply

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

Index entries

  • Susceptibility to disease, genetichereditary nonpolyposis colorectal cancer → QA1.71
  • SyndromeLynch (due to EPCAM) (due to MLH1) (due to MSH2) (due to MSH6) (due to PMS2) → QA1.71
  • SyndromeBRCA1-cancer predisposition → QA1.790
  • SyndromeBRCA2-cancer predisposition → QA1.791
  • SyndromeLi-Fraumeni → QA1.792
  • Syndromeinherited neoplasm predisposition syndrome of multiple systems, specified NEC → QA1.798
  • Syndromefamilial cancerwithpathogenic BRCA1 mutation → QA1.790
  • Syndromehereditary breast and ovarian cancerwithpathogenic BRCA1 mutation → QA1.790
  • Syndromefamilial cancerwithpathogenic BRCA2 mutation → QA1.791
  • Syndromehereditary breast and ovarian cancerwithpathogenic BRCA2 mutation → QA1.791

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

Hierarchy