Hyperchloremia has several important clinical applications in diagnosis and patient management. It is used to evaluate electrolyte balance and identify acid–base disorders, particularly hyperchloremic metabolic acidosis. It helps assess dehydration and excessive salt intake, supports the evaluation of kidney function and renal diseases, and is monitored during intravenous saline therapy to prevent electrolyte disturbances. Hyperchloremia is also useful in diagnosing bicarbonate loss caused by severe diarrhea or gastrointestinal disorders. In critical care, it assists in monitoring fluid balance and guiding fluid replacement therapy. It is valuable in the management of endocrine disorders such as adrenal insufficiency and is routinely measured in hospitalized patients to detect complications early. Monitoring chloride levels helps clinicians adjust medications and intravenous fluids, evaluate treatment response, and prevent complications associated with electrolyte imbalance. It also supports the assessment of metabolic conditions, improves patient safety during surgery and intensive care, aids in the diagnosis of renal tubular acidosis, contributes to the management of chronic kidney disease, helps identify overuse of saline-containing fluids, and provides essential information for overall clinical decision-making and patient care.