- Fibromyalgia 729.1
- Fibromyoma (M8890/0) - see also Neoplasm, connective tissue, benign
- Fibromyositis (see also Myositis) 729.1
- Fibromyxolipoma (M8852/0) (see also Lipoma, by site) 214.9
- Fibromyxoma (M8811/0) - see Neoplasm, connective tissue, benign
- Fibromyxosarcoma (M8811/3) - see Neoplasm, connective tissue, malignant
- Fibroplasia, retrolental 362.21
- Fibropurulent - see condition
- Fibrosarcoma (M8810/3) - see also Neoplasm, connective tissue, malignant
- Fibrosclerosis
- Fibrosis, fibrotic
- Fibrositis (periarticular) (rheumatoid) 729.0
- Fibrothorax 511.0
- Fibrotic - see Fibrosis
- Fibrous - see condition
- Fibroxanthoma (M8831/0) - see also Neoplasm, connective tissue, benign
- Fibroxanthosarcoma (M8831/3) - see Neoplasm, connective tissue, malignant
- Fiedler's
- Fiessinger-Leroy (-Reiter) syndrome 099.3
- Fiessinger-Rendu syndrome (erythema muliforme exudativum) 695.1
- Fifth disease (eruptive) 057.0
- Filaria, filarial - see Infestation, filarial
