B51.9Billable

Plasmodium vivax malaria without complication

Chapter
1. Certain infectious and parasitic diseases
Category
B51
Effective date
October 1, 2026

Related codes in category B51

B51Plasmodium vivax malariaB51.0Plasmodium vivax malaria with rupture of spleenYesB51.8Plasmodium vivax malaria with other complicationsYes

Frequently asked questions

What is ICD-10 code B51.9?

B51.9 is an ICD-10-CM diagnosis code for Plasmodium vivax malaria without complication.

Is B51.9 a billable code?

Yes. B51.9 is billable and specific enough to be used on a claim.

What ICD-10-CM chapter is B51.9 in?

B51.9 falls under Chapter 1: Certain infectious and parasitic diseases.

When did B51.9 become effective?

B51.9 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.

What other codes are related to B51.9?

B51.9 belongs to category B51, 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.