E87.1
BillableHypo-osmolality and hyponatremia
This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).
What This Code Means
A condition where the blood has too much water relative to salt (sodium), causing cells to swell and potentially leading to confusion, seizures, or brain swelling.
Coding Tips
- •Distinguish between acute and chronic hyponatremia, as treatment approaches differ significantly
- •Document the underlying cause such as SIADH, excessive water intake, or diuretic use
Excludes 1 — Do NOT code together
- syndrome of inappropriate secretion of antidiuretic hormone (E22.2)
Code Hierarchy
└E87Other disorders of fluid, electrolyte and acid-base balance└E87.1Hypo-osmolality and hyponatremia
└E87.1Hypo-osmolality and hyponatremia