Z84.A Family history of exposure to diethylstilbestrol

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

Applicable to

• DES granddaughter or grandson
• Family history of DES exposure
• Third generation DES exposure

MS-DRG index

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

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.A

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.A

• DES › grandchild (granddaughter) (grandson)
• DES › third generation
• History › family (of) › exposure to diethylstilbestrol (DES)

Nearby codes

• Z84.3 Family history of consanguinity
• 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 (this code)