2020 ICD-10-CM Diagnosis Code B50.9

Plasmodium falciparum malaria, unspecified

    2016 2017 2018 2019 2020 Billable/Specific Code
  • B50.9 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2020 edition of ICD-10-CM B50.9 became effective on October 1, 2019.
  • This is the American ICD-10-CM version of B50.9 - other international versions of ICD-10 B50.9 may differ.
The following code(s) above B50.9 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 B50.9:
  • A00-B99
    2020 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
    2020 ICD-10-CM Range B50-B64

    Protozoal diseases

    Type 1 Excludes
    • amebiasis (A06.-)
    • other protozoal intestinal diseases (A07.-)
    Protozoal diseases
  • B50
    ICD-10-CM Diagnosis Code B50

    Plasmodium falciparum malaria

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Includes
    • mixed infections of Plasmodium falciparum with any other Plasmodium species
    Plasmodium falciparum malaria
Approximate Synonyms
  • Falciparum malaria
  • Malaria, falciparum
Clinical Information
  • Malaria caused by plasmodium falciparum. This is the severest form of malaria and is associated with the highest levels of parasites in the blood. This disease is characterized by irregularly recurring febrile paroxysms that in extreme cases occur with acute cerebral, renal, or gastrointestinal manifestations.
ICD-10-CM B50.9 is grouped within Diagnostic Related Group(s) (MS-DRG v37.0):
  • 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 B50.9 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

Diagnosis Index entries containing back-references to B50.9:
  • Chagres fever B50.9
  • Estivo-autumnal malaria B50.9 (fever)
  • Fever (inanition) (of unknown origin) (persistent) (with chills) (with rigor) R50.9
    ICD-10-CM Diagnosis Code R50.9

    Fever, unspecified

      2016 2017 2018 2019 2020 Billable/Specific Code
    Applicable To
    • Fever NOS
    • Fever of unknown origin [FUO]
    • Fever with chills
    • Fever with rigors
    • Hyperpyrexia NOS
    • Persistent fever
    • Pyrexia NOS
    • intermittent (bilious) - see also Malaria
      • pernicious B50.9
    • Chagres B50.9
    • continued malarial B50.9
    • estivo-autumnal B50.9 (malarial)
    • Panama B50.9 (malarial)
    • subtertian B50.9
  • Malaria, malarial (fever) B54
    ICD-10-CM Diagnosis Code B54

    Unspecified malaria

      2016 2017 2018 2019 2020 Billable/Specific Code

ICD-10-CM Codes Adjacent To B50.9
B48.0 Lobomycosis
B48.1 Rhinosporidiosis
B48.2 Allescheriasis
B48.3 Geotrichosis
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

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