Short answer · Medically reviewed summary · Last updated: 2026-05-08
The primary ICD-10-CM code for Hypokalemia is E87.6, while the corresponding ICD-9-CM code is 276.8. These codes are used universally by clinicians and medical coders to identify and document the presence of low serum potassium levels in patient records. What is the clinical definition of Hypokalemia? Hypokalemia is defined as a serum potassium concentration of less than 3.5 mmol/L.
The primary ICD-10-CM code for Hypokalemia is E87.6, while the corresponding ICD-9-CM code is 276.8. These codes are used universally by clinicians and medical coders to identify and document the presence of low serum potassium levels in patient records.
Hypokalemia is defined as a serum potassium concentration of less than 3.5 mmol/L. While mild cases may be asymptomatic, severe Hypokalemia—typically defined as levels below 2.5 mmol/L—can lead to life-threatening cardiac arrhythmias, muscle paralysis, and respiratory failure. Proper coding using the E87.6 classification is essential for tracking the severity of the electrolyte imbalance during clinical encounters.
The development of Hypokalemia is usually categorized by its underlying mechanism, which often dictates the appropriate management strategy. Common drivers include:
Diagnosis of Hypokalemia involves a comprehensive metabolic panel to assess serum potassium levels alongside an electrocardiogram (ECG) to monitor for cardiac electrical instability. At DiseaseMaps.org, we have seen 7 community members share their experiences with managing Hypokalemia, highlighting the need for personalized monitoring. Treatment focuses on identifying the root cause of the potassium depletion and providing safe, controlled supplementation to restore homeostasis.
Medical disclaimer: This information is for educational purposes only and does not constitute professional medical advice, diagnosis, or treatment; always seek the advice of your physician regarding a medical condition.