Chapter I
Certain infectious and parasitic diseases
(A00-B99)

Protozoal diseases
(B50-B64)

Excl.:
amoebiasis ( A06.-)
other protozoal intestinal diseases ( A07.-)

B50 Plasmodium falciparum malaria

Incl.:
mixed infections of Plasmodium falciparum with any other Plasmodium species
B50.0 Plasmodium falciparum malaria with cerebral complications
Incl.:
Cerebral malaria NOS
B50.8 Other severe and complicated Plasmodium falciparum malaria
Incl.:
Severe or complicated Plasmodium falciparum malaria NOS
B50.9 Plasmodium falciparum malaria, unspecified

B51 Plasmodium vivax malaria

Incl.:
mixed infections of Plasmodium vivax with other Plasmodium species, except Plasmodium falciparum
Excl.:
when mixed with Plasmodium falciparum ( B50.-)
B51.0 Plasmodium vivax malaria with rupture of spleen
B51.8 Plasmodium vivax malaria with other complications
B51.9 Plasmodium vivax malaria without complication
Incl.:
Plasmodium vivax malaria NOS

B52 Plasmodium malariae malaria

Incl.:
mixed infections of Plasmodium malariae with other Plasmodium species, except Plasmodium falciparum and Plasmodium vivax
Excl.:
when mixed with Plasmodium:
B52.0 Plasmodium malariae malaria with nephropathy
B52.8 Plasmodium malariae malaria with other complications
B52.9 Plasmodium malariae malaria without complication
Incl.:
Plasmodium malariae malaria NOS

B53 Other parasitologically confirmed malaria

B53.0 Plasmodium ovale malaria
Excl.:
when mixed with Plasmodium:
B53.1 Malaria due to simian plasmodia
Excl.:
when mixed with Plasmodium:
B53.8 Other parasitologically confirmed malaria, not elsewhere classified
Incl.:
Parasitologically confirmed malaria NOS

B54 Unspecified malaria

Incl.:
Clinically diagnosed malaria without parasitological confirmation

B55 Leishmaniasis

B55.0 Visceral leishmaniasis
Incl.:
Kala-azar
Post-kala-azar dermal leishmaniasis
B55.1 Cutaneous leishmaniasis
B55.2 Mucocutaneous leishmaniasis
B55.9 Leishmaniasis, unspecified

B56 African trypanosomiasis

B56.0 Gambiense trypanosomiasis
Incl.:
Infection due to Trypanosoma brucei gambiense
West African sleeping sickness
B56.1 Rhodesiense trypanosomiasis
Incl.:
East African sleeping sickness
Infection due to Trypanosoma brucei rhodesiense
B56.9 African trypanosomiasis, unspecified
Incl.:
Sleeping sickness NOS
Trypanosomiasis NOS, in places where African trypanosomiasis is prevalent

B57 Chagas disease

Incl.:
American trypanosomiasis
infection due to Trypanosoma cruzi
B57.0† Acute Chagas disease with heart involvement (I41.2*, I98.1*)
Incl.:
Acute Chagas disease with:
  • cardiovascular involvement NEC (I98.1*)
  • myocarditis (I41.2*)
B57.1 Acute Chagas disease without heart involvement
Incl.:
Acute Chagas disease NOS
B57.2 Chagas disease (chronic) with heart involvement
Incl.:
American trypanosomiasis NOS
Chagas disease (chronic) (with):
  • NOS
  • cardiovascular involvement NEC† (I98.1*)
  • myocarditis† (I41.2*)
Trypanosomiasis NOS, in places where Chagas disease is prevalent
B57.3 Chagas disease (chronic) with digestive system involvement
B57.4 Chagas disease (chronic) with nervous system involvement
B57.5 Chagas disease (chronic) with other organ involvement

B58 Toxoplasmosis

Incl.:
infection due to Toxoplasma gondii
Excl.:
congenital toxoplasmosis ( P37.1)
B58.0† Toxoplasma oculopathy
Incl.:
Toxoplasma chorioretinitis ( H32.0*)
B58.1† Toxoplasma hepatitis (K77.0*)
B58.2† Toxoplasma meningoencephalitis (G05.2*)
B58.3† Pulmonary toxoplasmosis (J17.3*)
B58.8 Toxoplasmosis with other organ involvement
Incl.:
Toxoplasma:
B58.9 Toxoplasmosis, unspecified

B59† Pneumocystosis (J17.3*)

Incl.:
Pneumonia due to:
  • Pneumocystis carinii
  • Pneumocystis jirovecii

B60 Other protozoal diseases, not elsewhere classified

Excl.:
cryptosporidiosis ( A07.2)
intestinal microsporidiosis ( A07.8)
isosporiasis ( A07.3)
B60.0 Babesiosis
Incl.:
Piroplasmosis
B60.1 Acanthamoebiasis
Incl.:
Conjunctivitis due to Acanthamoeba† ( H13.1*)
Keratoconjunctivitis due to Acanthamoeba† ( H19.2*)
B60.2 Naegleriasis
Incl.:
Primary amoebic meningoencephalitis† ( G05.2*)
B60.8 Other specified protozoal diseases
Incl.:
Microsporidiosis

B64 Unspecified protozoal disease