ICD-10-CM 2027 diagnosis code

B52Plasmodium malariae malaria

Not billable — use a more specific code

B52 is a header code, so it can't be reported by itself. Choose one of the 3 more specific codes beneath it.

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About B52

B52 is the ICD-10-CM diagnosis code for Plasmodium malariae malaria. It belongs to block B50-B64 (protozoal diseases) and chapter 1 (certain infectious and parasitic diseases). It is a header code, so it can't be reported by itself; one of its 3 subcodes must be used instead.

To report this condition, pick the subcode that matches the documentation: B52.0 (with nephropathy), B52.8 (with other complications) and B52.9 (without complication).

Don't report B52 together with the conditions in its Excludes1 note: Plasmodium falciparum (B50.-) and Plasmodium vivax (B51.-).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Specific codes under B52

Coding notes

IncludesFurther defines the content of the category

mixed infections of Plasmodium malariae with other Plasmodium species, except Plasmodium falciparum and Plasmodium vivax

Excludes1Not coded here — never report together with this code

Plasmodium falciparum (B50.-)
Plasmodium vivax (B51.-)

Notes that apply from higher levels

Instructions written at a parent level also apply to B52.

Broader instructions also apply from B50-B64 Protozoal diseases and Chapter 1: Certain infectious and parasitic diseases.

Codes whose notes reference B52

B53.0Excludes1
B53.1Excludes1

Code history

2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027

FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
No changes since FY2016.

Common questions about B52

Is B52 billable?: No. B52 is a header code. Report one of its more specific subcodes instead.