ICD-10-CM 2027 diagnosis code
QA1.79Other inherited neoplasm predisposition syndrome of multiple systems
QA1.79 is a header code, so it can't be reported by itself. Choose one of the 4 more specific codes beneath it.Short description: Other inherited neoplm predisposition synd of mult systems
Code last changed in FY2027 (effective October 1, 2026). Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data
About QA1.79
QA1.79 is the ICD-10-CM diagnosis code for other inherited neoplasm predisposition syndrome of multiple systems. It belongs to category QA1 (genetic disorders associated with neoplasms, not elsewhere classified), block QA0-QA1 (genetic disorders, not elsewhere classified) and chapter 17 (congenital malformations, deformations, chromosomal abnormalities, and genetic disorders). It is a header code, so it can't be reported by itself; one of its 4 subcodes must be used instead.
Within QA1.7, choose QA1.79 (Other inherited neoplasm predisposition syndrome of multiple systems) only when documentation doesn't support a more specific option: Lynch syndrome (QA1.71).
To report this condition, pick the subcode that matches the documentation: QA1.790 (mutation), QA1.791 (mutation), QA1.792 (syndrome) and QA1.798 (systems).
It was added in FY2027, effective October 1, 2026.
Specific codes under QA1.79
Notes that apply from higher levels
Instructions written at a parent level also apply to QA1.79.
Broader instructions also apply from Chapter 17: Congenital malformations, deformations, chromosomal abnormalities, and genetic disorders.
Code history
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
- 2026
- 2027
- FY2027 (effective 10/1/2026): Added
Common questions about QA1.79
Is QA1.79 billable?
- No. QA1.79 is a header code. Report one of its more specific subcodes instead.
Did QA1.79 change for 2027?
- Yes. For FY2027 (effective October 1, 2026) it was added to the code set.