Z67.A3

Duffy b positive

FY2027Chapter 21: Factors influencing health status and contact with health services/Z67 Blood type

BillableComplete code, valid to report
  • POA exempt

Z67.A3 (also written Z67A3) is a billable ICD-10-CM diagnosis code for duffy b positive. It is part of the FY2027 code set, effective October 1, 2026. It is one of the 14 codes in category Z67 (Blood type). The Alphabetic Index lists it under 2 entries.

Inclusion terms

Conditions classified to this code.

This code
  • Duffy phenotype Fy(a-b+)

Notes

Also from chapter/block level (3 notes)
Inherited from Chapter 21 Factors influencing health status and contact with health services
  • Z codes represent reasons for encounters. A corresponding procedure code must accompany a Z code if a procedure is performed. Categories Z00-Z99 are provided for occasions when circumstances other than a disease, injury or external cause classifiable to categories A00-Y89 are recorded as 'diagnoses' or 'problems'. This can arise in two main ways:
    • (a) When a person who may or may not be sick encounters the health services for some specific purpose, such as to receive limited care or service for a current condition, to donate an organ or tissue, to receive prophylactic vaccination (immunization), or to discuss a problem which is in itself not a disease or injury.
    • (b) When some circumstance or problem is present which influences the person's health status but is not in itself a current illness or injury.

Alphabetic Index terms

Terms the official Alphabetic Index lists for this code. 2 entries