2027 ICD-10-CM Diagnosis Code QA1.79Other inherited neoplasm predisposition syndrome of multiple systems

ICD-10-CM Codes›Q00-Q99›QA0-QA1›QA1

ICD-10-CM QA1.79
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

QA1.79 is a non-billable ICD-10-CM category code for other inherited neoplasm predisposition syndrome of multiple systems, so it cannot be submitted on claims. Use a more specific code from this category instead, such as QA1.790, QA1.791, QA1.792, and QA1.798.

Code Identity

ICD-10-CM Code
QA1.79
Billable Status
No — Non-Billable Category
Code Describes
Other inherited neoplasm predisposition syndrome of multiple systems
Short Description
Other inherited neoplm predisposition synd of mult systems
Parent Code
QA1.7
Inherited neoplasm predisposition syndromes involving multiple systems, not elsewhere classified

Code Classification

ChapterQ00-Q99Congenital malformations, deformations and chromosomal abnormalities
SectionQA0-QA1Genetic disorders, not elsewhere classified
CategoryQA1Genetic disorders associated with neoplasms, not elsewhere classified
This CodeQA1.79Other inherited neoplasm predisposition syndrome of multiple systems

Specific Coding for Other inherited neoplm predisposition synd of mult systemsOverview

Non-specific codes like QA1.79 require more characters. Use one of these billable codes instead:

  • Use QA1.790 for Familial cancer syndrome with pathogenic BRCA1 mutation

  • Use QA1.791 for Familial cancer syndrome with pathogenic BRCA2 mutation

  • Use QA1.792 for Li Fraumeni syndrome

  • Use QA1.798 for Other inherited neoplasm predisposition syndrome of multiple systems

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to QA1.79: its own notes plus those printed at QA1 and Chapter 17. A note printed at a category, block or chapter applies to every code under it.

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

From QA1 Genetic disorders associated with neoplasms, not elsewhere classified applies to 5 codes
  • multiple endocrine neoplasia [MEN] syndromes (E31.2-)
From Chapter 17 (Q00-QA1) Congenital malformations, deformations and chromosomal abnormalities applies to 900 codes
  • inborn errors of metabolism (E70-E88)

Code Also

A second code may be needed to fully describe the condition; the note gives no sequencing direction.

From QA1 Genetic disorders associated with neoplasms, not elsewhere classified applies to 5 codes
  • if applicable, any associated conditions, such as:
  • genetic susceptibility to malignant neoplasm by site (Z15.0-)
  • malignant neoplasms (C00.0-C96.9)
  • personal history of malignant neoplasm (Z85.-)

Notes

General instructions on how these codes are used.

From Chapter 17 (Q00-QA1) Congenital malformations, deformations and chromosomal abnormalities applies to 900 codes
  • Codes from this chapter are not for use on maternal records

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Code HistoryHistory

FY 2027AddedAdded to the ICD-10-CM code setEffective October 1, 2026.
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About QA1.79Overview

What is the ICD-10 code for other inherited neoplasm predisposition syndrome of multiple systems?

QA1.79 (sometimes written as QA179) is the ICD-10-CM category for other inherited neoplasm predisposition syndrome of multiple systems, but it is a non-billable header: claims need a more specific code from this category, listed on this page.

Is QA1.79 a billable code?

No. This is a category header that groups the codes for other inherited neoplasm predisposition syndrome of multiple systems, and headers cannot be submitted on claims. Claims for other inherited neoplasm predisposition syndrome of multiple systems need a more specific code from this category, such as QA1.790, QA1.791, and QA1.792.