D71Header code — not billable
Functional disorders of polymorphonuclear neutrophils
- Chapter
- 3. Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism
- Category
- D71
- Effective date
- October 1, 2026
Related codes in category D71
Frequently asked questions
What is ICD-10 code D71?
D71 is an ICD-10-CM diagnosis code for Functional disorders of polymorphonuclear neutrophils.
Is D71 a billable code?
No. D71 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 D71 in?
D71 falls under Chapter 3: Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism.
When did D71 become effective?
D71 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to D71?
D71 belongs to category D71, which includes 3 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.