2023 ICD-10-CM Diagnosis Code B51.9

Plasmodium vivax malaria without complication

    2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code
  • B51.9 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2023 edition of ICD-10-CM B51.9 became effective on October 1, 2022.
  • This is the American ICD-10-CM version of B51.9 - other international versions of ICD-10 B51.9 may differ.
Applicable To
  • Plasmodium vivax malaria NOS
The following code(s) above B51.9 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to B51.9:
  • A00-B99
    2023 ICD-10-CM Range A00-B99

    Certain infectious and parasitic diseases

    Includes
    • diseases generally recognized as communicable or transmissible
    Type 1 Excludes
    • certain localized infections - see body system-related chapters
    Type 2 Excludes
    • 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 to identify resistance to antimicrobial drugs (Z16.-)
    Certain infectious and parasitic diseases
  • B50-B64
    2023 ICD-10-CM Range B50-B64

    Protozoal diseases

    Type 1 Excludes
    • amebiasis (A06.-)
    • other protozoal intestinal diseases (A07.-)
    Protozoal diseases
  • B51
    ICD-10-CM Diagnosis Code B51

    Plasmodium vivax malaria

      2016 2017 2018 2019 2020 2021 2022 2023 Non-Billable/Non-Specific Code
    Includes
    • mixed infections of Plasmodium vivax with other Plasmodium species, except Plasmodium falciparum
    Type 1 Excludes
    • plasmodium vivax with Plasmodium falciparum (B50.-)
    Plasmodium vivax malaria
Approximate Synonyms
  • Malaria, vivax
  • Vivax malaria
Clinical Information
  • Malaria caused by plasmodium vivax. This form of malaria is less severe than malaria, falciparum, but there is a higher probability for relapses to occur. Febrile paroxysms often occur every other day.
ICD-10-CM B51.9 is grouped within Diagnostic Related Group(s) (MS-DRG v40.0):
  • 867 Other infectious and parasitic diseases diagnoses with mcc
  • 868 Other infectious and parasitic diseases diagnoses with cc
  • 869 Other infectious and parasitic diseases diagnoses without cc/mcc

Convert B51.9 to ICD-9-CM

Code History
  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change
  • 2021 (effective 10/1/2020): No change
  • 2022 (effective 10/1/2021): No change
  • 2023 (effective 10/1/2022): No change

Diagnosis Index entries containing back-references to B51.9:

ICD-10-CM Codes Adjacent To B51.9
B48.4 Penicillosis
B48.8 Other specified mycoses
B49 Unspecified mycosis
B50 Plasmodium falciparum malaria
B50.0 Plasmodium falciparum malaria with cerebral complications
B50.8 Other severe and complicated Plasmodium falciparum malaria
B50.9 Plasmodium falciparum malaria, unspecified
B51 Plasmodium vivax malaria
B51.0 Plasmodium vivax malaria with rupture of spleen
B51.8 Plasmodium vivax malaria with other complications
B51.9 Plasmodium vivax malaria without complication
B52 Plasmodium malariae malaria
B52.0 Plasmodium malariae malaria with nephropathy
B52.8 Plasmodium malariae malaria with other complications
B52.9 Plasmodium malariae malaria without complication
B53 Other specified malaria
B53.0 Plasmodium ovale malaria
B53.1 Malaria due to simian plasmodia
B53.8 Other malaria, not elsewhere classified
B54 Unspecified malaria
B55 Leishmaniasis

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.