complement deficiency immunodeficiency due to a classical component pathway complement deficiency https://www.malacards.org/card/immunodeficiency_due_to_a_classical_component_pathway_complement_deficiency icd11.foundation:327609494 MEDGEN:585054 immunodeficiency due to an early component of complement deficiency GARD:0015025 Orphanet:169147 MONDO:0015699 immunodeficiency due to C1, C4, or C2 component complement deficiency immunodeficiency due to a C1, C4, or C2 component complement deficiency UMLS:C0398750