Hyperkalemia

This code represents an abnormally high concentration of potassium in the blood, a potentially life-threatening electrolyte imbalance. Hyperkalemia can lead to cardiac arrhythmias, muscle weakness, and paralysis if not promptly addressed.

Use this code when documentation clearly indicates a diagnosis of elevated serum potassium levels. This often occurs in patients with kidney disease, adrenal insufficiency, or those taking certain medications like ACE inhibitors or potassium-sparing diuretics.

• Always look for the underlying cause of hyperkalemia and code it as a secondary diagnosis if known and documented.
• Distinguish from hypokalemia (low potassium), which has a different code.
• Ensure the medical record specifies "hyperkalemia" or a potassium level above the normal range.