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E86.0

Billable

Dehydration

This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).

What This Code Means

Dehydration occurs when the body loses more fluids than it takes in, leading to an insufficient amount of water in the body. This can result from excessive sweating, vomiting, diarrhea, or inadequate fluid intake.

Coding Tips

  • Always look for the underlying cause of dehydration (such as gastroenteritis, heat exhaustion, or medication side effects) and code it as an additional diagnosis if documented
  • Dehydration is often a secondary condition; verify whether it is the primary reason for the encounter or a complication of another condition to ensure proper sequencing

Code Hierarchy

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