• Naegeli's
  • Naffziger's syndrome 353.0
  • Naga sore (see also Ulcer, skin) 707.9
  • Nägele's pelvis 738.6
  • Nager-de Reynier syndrome (dysostosis mandibularis) 756.0
  • Nail - see also condition
  • Nanism, nanosomia (see also Dwarfism) 259.4
  • Nanukayami 100.89
  • Napkin rash 691.0
  • Narcissism 301.81
  • Narcolepsy 347.00
  • Narcosis
  • Narcotism (chronic) (see also Dependence) 304.9
  • NARP (ataxia and retinitis pigmentosa syndrome) 277.87
  • Narrow
  • Narrowing
  • Narrowness, abnormal, eyelid 743.62
  • Nasal - see condition
  • Nasolacrimal - see condition
  • Nasopharyngeal - see also condition
  • Nasopharyngitis (acute) (infective) (subacute) 460
  • Nasopharynx, nasopharyngeal - see condition