Z67.AHeader code — not billable
Duffy phenotype
- Chapter
- 21. Factors influencing health status and contact with health services
- Category
- Z67
- Effective date
- October 1, 2026
Related codes in category Z67
Z67Blood typeZ67.1Type A bloodZ67.10Type A blood, Rh positiveYesZ67.11Type A blood, Rh negativeYesZ67.2Type B bloodZ67.20Type B blood, Rh positiveYesZ67.21Type B blood, Rh negativeYesZ67.3Type AB bloodZ67.30Type AB blood, Rh positiveYesZ67.31Type AB blood, Rh negativeYesZ67.4Type O bloodZ67.40Type O blood, Rh positiveYes
Frequently asked questions
What is ICD-10 code Z67.A?
Z67.A is an ICD-10-CM diagnosis code for Duffy phenotype.
Is Z67.A a billable code?
No. Z67.A is a category/header code, not billable on its own — use one of its more specific child codes instead.
What ICD-10-CM chapter is Z67.A in?
Z67.A falls under Chapter 21: Factors influencing health status and contact with health services.
When did Z67.A become effective?
Z67.A has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to Z67.A?
Z67.A belongs to category Z67, which includes 12 other codes — see the related codes list on this page.
ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.