2025 ICD-10-CM Diagnosis Code E87.0

Hyperosmolality and hypernatremia

  • E87.0 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2025 edition of ICD-10-CM E87.0 became effective on October 1, 2024.
  • This is the American ICD-10-CM version of E87.0 – other international versions of ICD-10 E87.0 may differ.

Applicable To

  • Sodium [Na] excess
  • Sodium [Na] overload

Type 2 Excludes

  • diabetes with hyperosmolarity (E08E09E11E13 with final characters .00 or .01)

The following code(s) above E87.0 contain annotation back-references

 that may be applicable to E87.0:

  • E00-E89  Endocrine, nutritional and metabolic diseases
  • E70-E88  Metabolic disorders
  • E87  Other disorders of fluid, electrolyte and acid-base balance

Approximate Synonyms

  • Dehydration hypernatremic
  • Diabetes type 1 with hyperosmolarity
  • Hypernatremia
  • Hypernatremia (high sodium level)
  • Hypernatremic dehydration
  • Hyperosmolality
  • Hyperosmolality with hypernatremia
  • Hyperosmolarity
  • Hyperosmolarity due to type 1 diabetes mellitus

Clinical Information

  • Excessive amount of sodium in the blood.
  • Excessive amount of sodium in the blood. (Dorland, 27th ed)

ICD-10-CM E87.0 is grouped within Diagnostic Related Group(s) (MS-DRG v42.0):

  • 640 Miscellaneous disorders of nutrition, metabolism, fluids and electrolytes with mcc
  • 641 Miscellaneous disorders of nutrition, metabolism, fluids and electrolytes without mcc
  • 791 Prematurity with major problems
  • 793 Full term neonate with major problems

Convert E87.0 to ICD-9-CMCode History

  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change
  • 2021 (effective 10/1/2020): No change
  • 2022 (effective 10/1/2021): No change
  • 2023 (effective 10/1/2022): No change
  • 2024 (effective 10/1/2023): No change
  • 2025 (effective 10/1/2024): No change

Diagnosis Index entries containing back-references to E87.0:

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