DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

B64 diagnosis code · Billable category · FY2027

B64 Unspecified protozoal disease

  • Billable
  • Not CC/MCC
  • POA reported

B64 ICD-10 code: a billable diagnosis code in FY2027; the category has no subdivisions.

Where it sits

  1. Chapter 1 Certain infectious and parasitic diseases (A00-B99)
  2. B50-B64 Protozoal diseases (B50-B64)
  3. B64 Unspecified protozoal disease
CC / MCC
Neither
MS-DRG
867-869
HCC V28
–
POA
Reported
Code Editor
–
Index entries
4

Instructions

Notes that also apply

Block B50-B64 instructions (Excludes1 2): printed on the block page.

Chapter 1 instructions (Includes 1, Excludes2 5, Use additional code 1): printed on the chapter 1 page.

Index entries

  • Disease, diseasedprotozoal → B64
  • Infection, infected, infective (opportunistic)protozoal NEC → B64
  • Infestationprotozoal NEC → B64
  • Protozoaldisease → B64

NCHS Alphabetic Index. Index first, then the Tabular List.

Medicare grouping and edits

CMS files for B64
CC / MCCNeither
Appendix BMDC 18 Infectious and Parasitic Diseases, Systemic or Unspecified Sites, MS-DRG 867-869 (Other Infectious and Parasitic Diseases Diagnoses with MCC…)
Code Editor–
POAReported
HCC V28–

CMS: MS-DRG v44 (Appendix B, C), MCE v44, POA list FY2027, 2027 Initial ICD-10-CM Mappings. What the rows mean.

Hierarchy