DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

B53 Other specified malaria

  • Header · not billable

B53 is not billable. The category heads 3 billable codes in FY2027: the 3 codes directly below it.

Index → code

  • Monkey malaria → B53.1
  • Simian malaria → B53.1
  • Malaria, malarial (fever)ovale → B53.0

Where it sits

  1. Chapter 1 Certain infectious and parasitic diseases (A00-B99)
  2. B50-B64 Protozoal diseases (B50-B64)
  3. B53 Other specified malaria
Billable codes
3
Subdivisions
3
CC / MCC codes
3 / 0
HCC V28 codes
0
New FY2027
0
Index entries
8

Codes in B53

  1. B53.0
    Plasmodium ovale malaria
    BillableCC
    Excludes1 3

    Excludes1

    • Plasmodium ovale with Plasmodium falciparum (B50.-) B50
    • Plasmodium ovale with Plasmodium malariae (B52.-) B52
    • Plasmodium ovale with Plasmodium vivax (B51.-) B51
  2. B53.1
    Malaria due to simian plasmodia
    BillableCC
    Excludes1 4

    Excludes1

    • Malaria due to simian plasmodia with Plasmodium falciparum (B50.-) B50
    • Malaria due to simian plasmodia with Plasmodium malariae (B52.-) B52
    • Malaria due to simian plasmodia with Plasmodium ovale (B53.0) B53.0
    • Malaria due to simian plasmodia with Plasmodium vivax (B51.-) B51
  3. B53.8
    Other malaria, not elsewhere classified
    BillableCC

CC/MCC: as a secondary diagnosis, unless the principal diagnosis is on the code’s PDX exclusion list (MS-DRG v44 Appendix C; list on the code card).

Sources of each column.

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

  • Monkey malaria → B53.1
  • Simian malaria → B53.1
  • Fever (inanition) (of unknown origin) (persistent) (with chills) (with rigor)Plasmodium ovale → B53.0
  • Malaria, malarial (fever)ovale → B53.0
  • Malaria, malarial (fever)parasitologically confirmed NEC → B53.8
  • Malaria, malarial (fever)specified type NEC (parasitologically confirmed) → B53.8
  • Malaria, malarial (fever)Plasmodium (P.)ovale → B53.0
  • Malaria, malarial (fever)Plasmodium (P.)simian → B53.1

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

Hierarchy