| B552 | Mucocutaneous leishmaniasis |
| B559 | Leishmaniasis, unspecified |
| B56 | African trypanosomiasis |
| B560 | Gambiense trypanosomiasis |
| B561 | Rhodesiense trypanosomiasis |
| B569 | African trypanosomiasis, unspecified |
| B57 | Chagas' disease |
| B570 | Acute Chagas' disease with heart involvement |
| B571 | Acute Chagas' disease without heart involvement |
| B572 | Chagas' disease (chronic) with heart involvement |
| B573 | Chagas' disease (chronic) with digestive system involvement |
| B5730 | Chagas' disease with digestive system involvement, unspecified |
| B5731 | Megaesophagus in Chagas' disease |
| B5732 | Megacolon in Chagas' disease |
| B5739 | Other digestive system involvement in Chagas' disease |
| B574 | Chagas' disease (chronic) with nervous system involvement |
| B5740 | Chagas' disease with nervous system involvement, unspecified Chagas' disease with nervous system involvement, unspecified |
| B5741 | Meningitis in Chagas' disease |
| B5742 | Meningoencephalitis in Chagas' disease |
| B5749 | Other nervous system involvement in Chagas' disease |
| B575 | Chagas' disease (chronic) with other organ involvement |
| B58 | Toxoplasmosis |
| B580 | Toxoplasma oculopathy |
| B5800 | Toxoplasma oculopathy, unspecified |
| B5801 | Toxoplasma chorioretinitis |
| B5809 | Other toxoplasma oculopathy |
| B581 | Toxoplasma hepatitis |
| B582 | Toxoplasma meningoencephalitis |
| B583 | Pulmonary toxoplasmosis |
| B588 | Toxoplasmosis with other organ involvement |
| B5881 | Toxoplasma myocarditis |
| B5882 | Toxoplasma myositis |
| B5883 | Toxoplasma tubulo-interstitial nephropathy |
| B5889 | Toxoplasmosis with other organ involvement |
| B589 | Toxoplasmosis, unspecified |
| B59 | Pneumocystosis |
| B60 | Other protozoal diseases, not elsewhere classified |
| B600 | Babesiosis |
| B6000 | Babesiosis, unspecified |
| B6001 | Babesiosis due to Babesia microti |
| B6002 | Babesiosis due to Babesia duncani |
| B6003 | Babesiosis due to Babesia divergens |
| B6009 | Other babesiosis |
| B601 | Acanthamebiasis |
| B6010 | Acanthamebiasis, unspecified |
| B6011 | Meningoencephalitis due to Acanthamoeba (culbertsoni) |
| B6012 | Conjunctivitis due to Acanthamoeba |
| B6013 | Keratoconjunctivitis due to Acanthamoeba |
| B6019 | Other acanthamebic disease |
| B602 | Naegleriasis |