**R42 — Dizziness and giddiness** covers a sensation of unsteadiness, lightheadedness, or near-faint without true vertigo (which is H81.x). Common causes include orthostatic hypotension, dehydration, medication side-effects, anxiety, and inner-ear disorders.
Persistent dizziness usually warrants vestibular and cardiovascular evaluation.
Belongs to **Chapter R** — Symptoms, signs.
