- Lymphocytic - see also condition
- Lymphocytoma (diffuse) (malignant) (M9620/3) 200.1
- Lymphocytomatosis (M9620/3) 200.1
- Lymphocytopenia 288.51
- Lymphocytosis (symptomatic) 288.61
- Lymphoepithelioma (M8082/3) - see Neoplasm, by site, malignant
- Lymphogranuloma (malignant) (M9650/3) 201.9
- Lymphogranulomatosis (malignant) (M9650/3) 201.9
- Lymphohistiocytosis, familial hemophagocytic 288.4
- Lymphoid - see condition
- Lympholeukoblastoma (M9850/3) 207.8
- Lympholeukosarcoma (M9850/3) 207.8
- Lymphoma (malignant) (M9590/3) 202.8
- Lymphomatosis (M9590/3) - see also Lymphoma
- Lymphopathia
- Lymphopenia 288.51
- Lymphoreticulosis, benign (of inoculation) 078.3
- Lymphorrhea 457.8
- Lymphosarcoma (M9610/3) 200.1
- Lymphostasis 457.8
- Lypemania (see also Melancholia) 296.2
- Lyssa 071
