ICD-10-CM 2027
ICD-10 code for third generation des
From the official ICD-10-CM alphabetic index entry “DES › third generation”. Page updated September 29, 2026.
About coding third generation des
The ICD-10-CM code for third generation des is Z84.A (Family history of exposure to diethylstilbestrol).
Within Z84 (family history of other conditions), Z84.A is specifically for family history of exposure to diethylstilbestrol. Related codes cover diseases of the skin and subcutaneous tissue (Z84.0), disorders of kidney and ureter (Z84.1), other diseases of the genitourinary system (Z84.2), consanguinity (Z84.3) and other specified conditions (Z84.8).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 951 (Other Factors Influencing Health Status, relative weight 0.5577), in MDC 23 (Factors Influencing Health Status and Other Contacts with Health Services), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
Common questions about third generation des ICD-10 codes
What is the ICD-10 code for third generation des?
- Z84.A — Family history of exposure to diethylstilbestrol.
Is Z84.A billable?
- Yes. Z84.A is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can Z84.A be used as a principal diagnosis?
- No. It is not acceptable as the principal diagnosis for an inpatient stay; it may be reported as a secondary diagnosis.
Is Z84.A a CC or MCC?
- No. Z84.A is neither a CC nor an MCC under MS-DRG v44.0.