Z67.A4
Billable codeDuffy a and b positive
The ICD-10 code for duffy a and b positive is Z67.A4.
Clinical notes
Also known as
Alternate wording, synonyms, or specific conditions that fall under this code, listed to help confirm you've picked the right one.
- Duffy phenotype Fy(a+b+)
Documentation support
General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.
- •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.
Related codes in this category
- Z67.A1Duffy null
- Z67.A2Duffy a positive
- Z67.A3Duffy b positive
- Z67.A4Duffy a and b positive
Associated MS-DRGs
Z67.A4 can serve as the principal diagnosis for these Medicare Severity Diagnosis-Related Groups.
Informational only — actual DRG assignment also depends on procedures, complications/comorbidities (CC/MCC), discharge status, and payer-specific rules not reflected here.