- Hypercholesterinemia - see Hypercholesterolemia
- Hypercholesterolemia 272.0
- Hypercholesterolosis 272.0
- Hyperchylia gastrica 536.8
- Hyperchylomicronemia (familial) (with hyperbetalipoproteinemia) 272.3
- Hypercoagulation syndrome (primary) 289.81
- Hypercorticosteronism
- Hypercortisonism
- Hyperdynamic beta-adrenergic state or syndrome (circulatory) 429.82
- Hyperekplexia 759.89
- Hyperelectrolytemia 276.9
- Hyperemesis 536.2
- Hyperemia (acute) 780.99
- Hyperesthesia (body surface) (see also Disturbance, sensation) 782.0
- Hyperestrinism 256.0
- Hyperestrogenism 256.0
- Hyperestrogenosis 256.0
- Hyperexplexia 759.89
- Hyperextension, joint 718.80
- Hyperfibrinolysis - see Fibrinolysis
- Hyperfolliculinism 256.0
- Hyperfructosemia 271.2
