B50-B64

Non-Billable

ChapterA00–B99

Rankblock

Official Description

Protozoal diseases (B50-B64)

Use a more specific code (3 billable, 9 non-billable)

B50Plasmodium falciparum malariahas subcodes B51Plasmodium vivax malariahas subcodes B52Plasmodium malariae malariahas subcodes B53Other specified malariahas subcodes B54Unspecified malaria B55Leishmaniasishas subcodes B56African trypanosomiasishas subcodes B57Chagas' diseasehas subcodes B58Toxoplasmosishas subcodes B59Pneumocystosis B60Other protozoal diseases, not elsewhere classifiedhas subcodes B64Unspecified protozoal disease

Metadata & Insights

•Non-billable category (requires more specific sub-code).
•Chapter 1: Certain Infectious and Parasitic Diseases (A00-B99).

CH1 Parent Instructions

Includes

diseases generally recognized as communicable or transmissible

Excludes1(Not coded here. Use a different code.)

certain localized infections - see body system-related chapters

Excludes2(Not included here. Code separately if applicable.)

carrier or suspected carrier of infectious disease (Z22.-)
infectious and parasitic diseases complicating pregnancy, childbirth and the puerperium (O98.-)
infectious and parasitic diseases specific to the perinatal period (P35-P39)
influenza and other acute respiratory infections (J00-J22)

Use Additional Code

code to identify resistance to antimicrobial drugs (Z16.-)

Instructional Notes

Excludes1(Not coded here. Use a different code.)

amebiasis (A06.-)
other protozoal intestinal diseases (A07.-)

Clinical Hierarchy

BillableHas subcodes

CH1Certain infectious and parasitic diseases (A00-B99)

B50-B64Protozoal diseases (B50-B64)Not billable

B50Plasmodium falciparum malariaSubcodes

B51Plasmodium vivax malariaSubcodes

B52Plasmodium malariae malariaSubcodes

B53Other specified malariaSubcodes

B54Unspecified malariaBillable

B55LeishmaniasisSubcodes

B56African trypanosomiasisSubcodes

B57Chagas' diseaseSubcodes

B58ToxoplasmosisSubcodes

B59PneumocystosisBillable

B60Other protozoal diseases, not elsewhere classifiedSubcodes

B64Unspecified protozoal diseaseBillable

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to B50-B64:

chapterCH1

Certain infectious and parasitic diseases (A00-B99)

View context instructions

MS-DRG Classification

2026

No direct MS-DRG triggers identified.

Cross Reference

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