Xanthelasmatosis (essential) 272.2

Xanthelasmoidea 757.33

Xanthine stones 277.2

Xanthinuria 277.2

Xanthofibroma (M8831/0) - see Neoplasm, connective tissue, benign

Xenophobia 300.29

Xerostomia 527.7

Xiphodynia 733.90

Xiphoidalgia 733.90

Xiphoiditis 733.99

Xiphopagus 759.4

XO syndrome 758.6

XXX syndrome 758.81

XXXXY syndrome 758.81

XXY syndrome 758.7

Xyloketosuria 271.8

Xylosuria 271.8

Xylulosuria 271.8

XYY syndrome 758.81