2027 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 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

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
Short Description
Other disorders of fluid, electrolyte and acid-base balance
Same as the full description in the CMS dataset.
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

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to E87: its own notes plus those printed at block E70-E88 and Chapter 4. A note printed at a category, block or chapter applies to every code under it.

Excludes1

Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.

On E87 itself
  • 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)
From Block E70-E88 Metabolic disorders applies to 286 codes
  • androgen insensitivity syndrome (E34.5-)
  • congenital adrenal hyperplasia (E25.0)
  • hemolytic anemias attributable to enzyme disorders (D55.-)
  • Marfan syndrome (Q87.4-)
  • 5-alpha-reductase deficiency (E29.1)
From Chapter 4 (E00-E89) Endocrine, nutritional and metabolic diseases applies to 973 codes
  • transitory endocrine and metabolic disorders specific to newborn (P70-P74)

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

From Block E70-E88 Metabolic disorders applies to 286 codes
  • Ehlers-Danlos syndromes (Q79.6-)

Notes

General instructions on how these codes are used.

From Chapter 4 (E00-E89) Endocrine, nutritional and metabolic diseases applies to 973 codes
  • All neoplasms, whether functionally active or not, are classified in Chapter 2. Appropriate codes in this chapter (i.e. E05.8, E07.0, E16-E31, E34.-) may be used as additional codes to indicate either functional activity by neoplasms and ectopic endocrine tissue or hyperfunction and hypofunction of endocrine glands associated with neoplasms and other conditions classified elsewhere.

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name E87, its category, or a range that includes it.

Excludes2 2

These codes carry an Excludes2 note naming E87: its condition is not part of those codes, and both may be reported when the patient has both.

  • R79.1 Abnormal coagulation profile
    abnormality of fluid, electrolyte or acid-base balance (E86-E87) names E86-E87, which includes this code
  • Block T80-T88 Complications of surgical and medical care, not elsewhere classified
    disorders of fluid and electrolyte imbalance (E86-E87) names E86-E87, which includes this code

Use Additional Code 1

These codes say to use an additional code from the note, and E87 is one of the codes named.

  • E86 Volume depletion
    code(s) for any associated disorders of electrolyte and acid-base balance (E87.-)

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 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About E87Overview

What is the ICD-10 code for other disorders of fluid, electrolyte and acid-base balance?

E87 is the ICD-10-CM category for other disorders of fluid, electrolyte and acid-base balance, but it is a non-billable header: claims need a more specific code from this category, listed on this page.

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.

Can E87 be reported with E23.2?

Not as a rule. The Excludes1 note on E87 lists "diabetes insipidus (E23.2)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).