ICD-10 Code E86 – Volume depletion (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code E86 – Volume depletion
What it is
Volume depletion means the body has lost too much fluid, reducing circulating blood volume. It is often used when dehydration or fluid loss is documented and the clinical focus is replacement or assessment.
Clinical signs
Common findings include dry mucous membranes, thirst, decreased urine output, weakness, dizziness, and orthostatic symptoms. Clinical features vary; refer to documentation.
When to use this code
Use E86 when the provider documents volume depletion, dehydration, or hypovolemia as a diagnosis being addressed. It fits cases caused by poor intake, vomiting, diarrhea, or other fluid losses when the record supports the condition. Check documentation if the note only mentions nonspecific weakness or abnormal labs.
Do not use for
Do not use this code for electrolyte imbalance alone or for fluid overload conditions. If the record does not clearly document volume depletion, check documentation before coding.
Coding tip
Code the documented fluid deficit, and link it to the cause when the chart supports both.