Hypermagnesemia

This code represents an abnormally high level of magnesium in the blood, a condition known as hypermagnesemia. It can lead to various symptoms affecting the neuromuscular, cardiovascular, and central nervous systems, ranging from mild muscle weakness to severe cardiac arrest.

Assign this code when documentation clearly indicates a diagnosis of hypermagnesemia, often supported by laboratory test results showing elevated serum magnesium levels. This condition is frequently seen in patients with renal failure, those receiving magnesium-containing medications (e.g., antacids, laxatives), or during magnesium infusions.

• Always confirm the diagnosis with laboratory results and physician documentation.
• Investigate and code any underlying cause of the hypermagnesemia, such as chronic kidney disease, if documented.
• Do not confuse with hypomagnesemia (low magnesium levels), which is coded elsewhere.