Z67.A

Non-Billable

ChapterZ00–Z99

Ranksubcategory

Official Description

Duffy phenotype

Metadata & Insights

•2026 ICD-10-CM Edition - Effective October 1, 2025.
•Non-billable category (requires more specific sub-code).
•Chapter 21: Factors Influencing Health Status and Contact with Health Services (Z00-Z99).

Clinical Hierarchy

CH21Factors influencing health status and contact with health services (Z00-Z99)

Z67Blood type

Z67.ADuffy phenotype

Z67.A1Duffy null

Z67.A2Duffy a positive

Z67.A3Duffy b positive

Z67.A4Duffy a and b positive

Alphabetic Index Mentions

These are Diagnosis Index lookup paths that route to Z67.A. Use them as entry terms for search, then confirm final coding instructions in the Tabular List and notes above.

8 raw paths

Phenotype5 unique routes3 duplicates hidden

Duffy(8 variants)

a and b positive→Z67.A

a positive→Z67.A

b positive→Z67.A

Fy (a+b+)→Z67.A(4 variants)

null→Z67.A

MS-DRG Classification

2026

No direct MS-DRG triggers identified.

Cross Reference

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Find surgical and procedural codes related to Duffy phenotype.

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