Prefix: auto-

Short Definition

Self; originating from the same individual.

Long Definition

The prefix auto- refers to something that arises from, acts on, or relates to the self. In medical terminology, it often indicates that a process, immune response, graft, or condition originates within the patient’s own body.

Etymology

  • Greek autos → “self”
TermMeaning
allo-other, different
idio-self, distinct, personal

Common Medical Terms

  • Autograft - graft taken from the same person
  • autoimmune - immune system attacks self
  • Autonomic - self-regulating nervous system

Documentation Clues

  • “Patient’s own tissue used”
  • “Self-directed response”
  • “Intrinsic function”

Coder’s Notes

Important in graft coding: autografts differ from allografts in CPT and supply billing.



Med terms dictionary Appendix A Prefixes Appendix B Combining Forms Appendix C Suffixes Appendix D Suffix forms