All ICD10 Codes

B64

Billable
ChapterA00–B99
Rankcategory
Description

Unspecified protozoal disease

About ICD-10-CM code B64

B64 is the ICD-10-CM diagnosis code for Unspecified protozoal disease. It sits in A00-B99 Certain Infectious and Parasitic Diseases, within Protozoal diseases (B50-B64). As a billable code, B64 can be reported for reimbursement.

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:

blockB50-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:

DRG 867
Other Infectious and Parasitic Diseases Diagnoses with MCC
DRG 868
Other Infectious and Parasitic Diseases Diagnoses with CC
DRG 869
Other Infectious and Parasitic Diseases Diagnoses without CC/MCC

Cross Reference

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