• Zellweger's syndrome Q87.8
• Zenker's diverticulum (esophagus) K22.5
• Ziehen-Oppenheim disease G24.1
• Zieve's syndrome K70.0
• Zinc
• deficiency, dietary E60
• metabolism disorder E83.2
• Zollinger-Ellison syndrome E16.4
• Zona Herpes, zoster
• Zoophobia F40.2
• Zoster (herpes) Herpes, zoster
• Zygomycosis B46.9
• specified NEC B46.8
• Zymotic - see condition