B64

Billable

ChapterA00–B99

Rankcategory

Official Description

Unspecified protozoal disease

Metadata & Insights

•Billable/specific code (valid for reimbursement).
•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.-)

B50-B64 Parent Instructions

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)

B64Unspecified protozoal diseaseBillable

Applicable Ancestor Context

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

Protozoal diseases (B50-B64)

View context instructions

chapterCH1

Certain infectious and parasitic diseases (A00-B99)

View context instructions

MS-DRG Classification

2026 v43.1

This code is grouped within the following Diagnosis Related Group(s) for clinical reimbursement:

Other Infectious and Parasitic Diseases Diagnoses with MCC

Other Infectious and Parasitic Diseases Diagnoses with CC

Other Infectious and Parasitic Diseases Diagnoses without CC/MCC

Cross Reference

Find Procedures (ICD-10-PCS)

Find surgical and procedural codes related to Unspecified protozoal disease.

Search PCS Codes