2026 ICD-10-CM Diagnosis Code E87Other disorders of fluid, electrolyte and acid-base balance

ICD-10-CM Codes›E00–E89›E70-E88›E87

ICD-10-CM E87
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

E87 is a non-billable ICD-10-CM category code for other disorders of fluid, electrolyte and acid-base balance, so it cannot be submitted on claims. Use a more specific code from this category instead, such as E87.0, E87.1, E87.20, and E87.21.

Code Identity

ICD-10-CM Code
E87
Billable Status
No — Non-Billable Category
Code Describes
Other disorders of fluid, electrolyte and acid-base balance
Chapter
E70-E88
Metabolic disorders

Code Classification

ChapterE00–E89Endocrine, nutritional and metabolic diseases
SectionE70-E88Metabolic disorders
CategoryE87Other disorders of fluid, electrolyte and acid-base balance
This CodeE87Other disorders of fluid, electrolyte and acid-base balance

Specific Coding for Other disorders of fluid, electrolyte and acid-base balanceOverview

Non-specific codes like E87 require more characters. Use one of these billable codes instead:

  • Use E87.0 for Hyperosmolality and hypernatremia

  • Use E87.1 for Hypo-osmolality and hyponatremia

  • E87.2 for Acidosis

  • Use E87.20 for Acidosis, unspecified

  • Use E87.21 for Acute metabolic acidosis

  • Use E87.22 for Chronic metabolic acidosis

  • Use E87.29 for Other acidosis

  • Use E87.3 for Alkalosis

  • Use E87.4 for Mixed disorder of acid-base balance

  • Use E87.5 for Hyperkalemia

  • Use E87.6 for Hypokalemia

  • E87.7 for Fluid overload

  • Use E87.70 for Fluid overload, unspecified

  • Use E87.71 for Transfusion associated circulatory overload

  • Use E87.79 for Other fluid overload

  • Use E87.8 for Other disorders of electrolyte and fluid balance, not elsewhere classified

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Type 1 Excludes

  • 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

Patient EducationClinical

Fluid and Electrolyte Balance

Electrolytes are minerals that have an electric charge when they are dissolved in water or body fluids, including blood. The electric charge can be positive or negative. You have electrolytes in your blood, urine (pee), tissues, and other body fluids.

The full article covers:

  • What are electrolytes?
  • What are the different types of electrolytes in your body?
  • What is an electrolyte imbalance?
  • What are the different types of electrolyte imbalances?
  • How are electrolyte imbalances diagnosed?
  • What are the treatments for electrolyte imbalances?

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About E87Overview

Is E87 (Other disorders of fluid, electrolyte and acid-base balance) a billable code?

No. This is a category header that groups the codes for other disorders of fluid, electrolyte and acid-base balance, and headers cannot be submitted on claims. Claims for other disorders of fluid, electrolyte and acid-base balance need a more specific code from this category, such as E87.0, E87.1, and E87.20.