Z84.3 Family history of consanguinity

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

MS-DRG index

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

Approximate ICD-9-CM (GEMs)

• V19.7 Family history of consanguinity

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 Z84.3

Back-references to Z84

• Use Additional: Z15 Genetic susceptibility to disease ("code, if applicable, for any associated family history of the disease (Z80-Z84)")

Diagnosis Index entries for Z84.3

• Consanguinity
• History › family (of) › consanguinity

Nearby codes

• Z84.0 Family history of diseases of the skin and subcutaneous tissue
• Z84.1 Family history of disorders of kidney and ureter
• Z84.11 Family history of APOL1-mediated kidney disease [AMKD]
• Z84.19 Family history of other disorders of kidney and ureter
• Z84.2 Family history of other diseases of the genitourinary system
• Z84.3 Family history of consanguinity (this code)
• Z84.8 Family history of other specified conditions
• Z84.81 Family history of carrier of genetic disease
• Z84.82 Family history of sudden infant death syndrome
• Z84.89 Family history of other specified conditions
• Z84.A Family history of exposure to diethylstilbestrol