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v1.0.0
ICD-10 Guide
DiagnosesPotassium Level

Potassium Level

ICD-10 Coding for Potassium Level Disorders(E87.5, E87.6)

PRIMARY SPECIALTYNephrology
COMPLEXITYHigh
LAST UPDATED09/15/2025
Sam Tuffun, PT, DPT
Physical Therapist | Medical Coding & Billing Contributor

Diagnosis Overview

What is Potassium Level?
Essential facts and insights about Potassium Level Disorders

Key Clinical Considerations:

  • Hyperkalemia: muscle weakness, fatigue, palpitations
  • Hypokalemia: muscle cramps, weakness, arrhythmias
  • Serum potassium levels: >5.0 mEq/L for hyperkalemia, <3.5 mEq/L for hypokalemia

Clinical Information

Clinical Criteria & Documentation Requirements

  • Patient's potassium level results and interpretation
  • Clinical context for potassium level abnormalities
  • Examples of symptoms and physical exam findings related to potassium levels

Coding Guidelines

Usage Guidelines & Examples

  • Usage guidelines: Use E87.5 for hyperkalemia and E87.6 for hypokalemia.
  • Common errors: Misclassifying potassium levels or omitting clinical context.

Code Exclusions

Important Exclusions

  • Conditions like chronic kidney disease without potassium abnormalities
  • Alternative codes for electrolyte imbalances not specific to potassium

Related ICD-10 Codes

Primary Codes
E87.5
Hyperkalemia
E87.6
Hypokalemia
Ancillary Codes
I12.0
Z79.2
Differential Codes
R79.89

Related CPT Codes

CPT codes will be available in a future update.

Specialty Focus

Primary Specialty

Nephrology

Specialty Applications

  • Patients with renal disease, heart conditions, or on diuretics
  • Nephrology clinics, emergency departments, and inpatient settings

Coding Complexity

High Complexity

This diagnosis requires careful attention to:

  • Comprehensive clinical documentation
  • Accurate code selection based on clinical criteria
  • Proper exclusion considerations
  • Specialty-specific coding guidelines

Documentation

Documentation Templates

Billing Information

Billing Considerations

  • Ensure proper documentation for billing
  • Verify code specificity requirements
  • Check for any additional codes needed
  • Review payer-specific guidelines

Common Issues

  • Insufficient clinical documentation
  • Incorrect code selection
  • Missing supporting diagnoses
  • Timing and frequency documentation

Frequently Asked Questions

Documentation requirements?

Include potassium level, clinical symptoms, and treatment plan.

Billing considerations?

Ensure accurate coding based on potassium level and associated conditions.