What is the correct ASA Physical Status Classification for a patient who is on hemodialysis for end-stage renal disease?

A patient on hemodialysis for end-stage renal disease (ESRD) is classified as ASA III, indicating a patient with a severe systemic disease that is not immediately life-threatening. ESRD patients have significant medical complexities including: electrolyte imbalances, anemia, hypertension, cardiovascular disease, bleeding tendencies (platelet dysfunction), altered drug metabolism, and immune compromise. In the dental setting, this classification guides treatment planning (may treat in a dental office with modifications, no elective complex procedures), timing relative to dialysis schedule, drug dosing adjustments (renally-cleared drugs), and the need for medical consultation. ASA IV would be assigned if the ESRD patient has ongoing life-threatening complications.