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P74.21

Billable

Hypernatremia of newborn

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

What This Code Means

A condition where a newborn has abnormally high levels of sodium in their blood.

Coding Tips

  • Confirm sodium levels from laboratory results; typically defined as serum sodium >150 mEq/L in neonates
  • Document the underlying cause such as dehydration, excessive sodium intake, or inadequate free water intake

Code Hierarchy

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