MCMedicalCodingSoftware
E87.0

E87.0: Hyperosmolality and hypernatremia

Billable / specific codeICD-10-CM

E87.0 is a billable, specific ICD-10-CM code for hyperosmolality and hypernatremia. It is valid for submission on a claim.

Check E87.0 with the rest of the claim: free scrubber

Excludes2: not included here, but may coexist

The excluded condition is not part of this code, but a patient can have both. You may code both.

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

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

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

Excludes1 inherited from the categories above E87.0

A category’s note binds every code beneath it.

Written on 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)

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Medicare coverage

E87.0 is named in 3 Medicare coverage policies: 3 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.

  • A57189Billing and Coding: Serum Magnesium
  • A57326Billing and Coding: Electrocardiograms
  • A57361Billing and Coding: Monitored Anesthesia Care

Alphabetic index entries that lead here

  • Hypernatremia
  • Hyperosmolality(see also, Diabetes, by type, with hyperosmolarity)
  • Edema, edematous›salt
  • Excess, excessive, excessively›natrium
  • Excess, excessive, excessively›sodium(Na)
  • Overload›sodium(Na)
  • Syndrome›hypernatremia
  • Syndrome›hyperosmolarity(see also, Diabetes, by type, with hyperosmolarity)
  • Edema, edematous›due to›salt retention
  • Findings, abnormal, inconclusive, without diagnosis›sodium›excess

Code history

Unchanged in every release from FY2024 to FY2027.

Other codes under E87

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.