Z80.9 Family history of malignant neoplasm, unspecified

Billable ICD-10-CM code, FY2026. Exempt from present-on-admission (POA) reporting.

Applicable to

• Conditions classifiable to C80.1

MS-DRG index

Defines the logic of DRG(s) 951 in MDC 23.

Approximate ICD-9-CM (GEMs)

• V16.9 Family history of unspecified malignant neoplasm

Medicare Code Edits (MCE v43.1 (April 2026))

• Unacceptable principal diagnosis: These codes describe a circumstance which influences care but is not a current illness or injury, or capture only an underlying condition, and are unacceptable as principal diagnosis.

Code annotations containing back-references to Z80.9

Back-references to Z80

• Use Additional: Z12 Encounter for screening for malignant neoplasms ("code to identify any family history of malignant neoplasm (Z80.-)")
• Use Additional: Z15 Genetic susceptibility to disease ("code, if applicable, for any associated family history of the disease (Z80-Z84)")

Diagnosis Index entries for Z80.9

• History › family (of) › malignant neoplasm (of) NOS

Nearby codes

• Z80.52 Family history of malignant neoplasm of bladder
• Z80.59 Family history of malignant neoplasm of other urinary tract organ
• Z80.6 Family history of leukemia
• Z80.7 Family history of other malignant neoplasms of lymphoid, hematopoietic and related tissues
• Z80.8 Family history of malignant neoplasm of other organs or systems
• Z80.9 Family history of malignant neoplasm, unspecified (this code)