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Home / ICD-10-CM / Chapter 21: Factors influencing health status and contact with health services (Z00-Z99) / Persons with potential health hazards related to family and personal history and certain conditions influencing health status (Z77-Z99)

Z84.A: Family history of exposure to diethylstilbestrol

ICD-10-CM code Z84.A

New code ยท FY2026

Billable: use this code on claims.

  • New code, effective October 1, 2025 (FY2026).

Code breakdown

Z84.A

  1. Z84CategoryFamily history of other conditions
  2. ACharacter 4Family history of exposure to diethylstilbestrol

Coding notes

Inclusion terms

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

Check this code

All FY2026 ICD-10-CM changes

ICD-10-CM codes and descriptions are from the CMS and NCHS code files. Coverage is from the CMS Medicare Coverage Database billing and coding articles.