E87.0

✓ Billable

Hyperosmolality and hypernatremia

Endocrine, nutritional and metabolic diseases (E00-E89)

Also Known As

Sodium [Na] excessSodium [Na] overload

inherited from E87

Rules from parent category E87: Other disorders of fluid, electrolyte and acid-base balance

• diabetes insipidus (E23.2)
• electrolyte imbalance associated with hyperemesis gravidarum (O21.1)
• electrolyte imbalance following ectopic or molar pregnancy (O08.5)
• familial periodic paralysis (G72.3)
• metabolic acidemia in newborn, unspecified (P19.9)

direct

May be coded together if both conditions coexist

• diabetes with hyperosmolarity (E08, E09, E11, E13 with final characters .00 or .01)

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Code Information

CodeE87.0

BillableYes

ParentE87

CategoryEndocrine, nutritional and metabolic diseases (E00-E89)

Excludes15 rule(s)

Excludes21 note(s)

Data Source

CMS ICD-10-CM 2026 Tabular List

Updated October 1, 2025 (FY2026)