New for FY2027 ICD-10-CM · October 1, 2026
QA1.79: Other inherited neoplasm predisposition syndrome of multiple systems
By the HCC Buddy Coding Team
The official ICD-10-CM descriptor is Other inherited neoplasm predisposition syndrome of multiple systems. The FY2027 annual edition starts October 1, 2026. Check the edition that applies to the encounter or inpatient discharge, including any April update.
Nonbillable heading. Verified against the official FY2027 order file.
More specific FY2027 codes
FY2027 Tabular instructions
Instructions below include applicable chapter, section and parent-code notes. Each note identifies where it appears in the official source.
Instructional note
Codes from this chapter are not for use on maternal records
Source: Q00-QA1 (chapter, inherited).
Excludes2
inborn errors of metabolism (E70-E88)
Source: Q00-QA1 (chapter, inherited).
Code also
, if applicable, any associated conditions, such as:
Source: QA1 (category, inherited).
Code also
genetic susceptibility to malignant neoplasm by site (Z15.0-)
Source: QA1 (category, inherited).
Code also
malignant neoplasms (C00.0-C96.9)
Source: QA1 (category, inherited).
Code also
personal history of malignant neoplasm (Z85.-)
Source: QA1 (category, inherited).
Excludes2
multiple endocrine neoplasia [MEN] syndromes (E31.2-)
Source: QA1 (category, inherited).
Compare the FY2027 additions, removals and billable-status changes
What does QA1.79 mean in FY2027?
The official ICD-10-CM descriptor is Other inherited neoplasm predisposition syndrome of multiple systems. The FY2027 annual edition starts October 1, 2026. Check the edition that applies to the encounter or inpatient discharge, including any April update.
When did QA1.79 become an ICD-10-CM code?
QA1.79 is new for FY2027 ICD-10-CM, effective October 1, 2026. It is absent from the FY2026 April order file. Use the code set that applies to the encounter or inpatient discharge date, and check the official Tabular instructions.
Is QA1.79 billable in FY2027?
The FY2027 order file marks QA1.79 as a nonbillable heading. Select a complete billable child code.
Does QA1.79 map to an HCC?
Risk-model mapping is not applicable to this nonbillable heading. Check a complete billable child code.
Source: CMS FY2027 ICD-10-CM order file. Payment model: CMS CY 2027 Rate Announcement. Read the FY2027 Official Guidelines.