E87.8

Other disorders of electrolyte and fluid balance, not elsewhere classified

Billable FY2026 2025-10-01 → 2026-09-30

Exclusions 12 never code together

E87code

Excludes1

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

E70-E88block

Excludes1

androgen insensitivity syndrome (E34.5-)E34.5-
congenital adrenal hyperplasia (E25.0)E25.0
hemolytic anemias attributable to enzyme disorders (D55.-)D55.-
Marfan syndrome (Q87.4-)Q87.4-
5-alpha-reductase deficiency (E29.1)E29.1

Excludes2

Ehlers-Danlos syndromes (Q79.6-)Q79.6-

E00-E89chapter

Excludes1

transitory endocrine and metabolic disorders specific to newborn (P70-P74)P70-P74

Excludes1 — never code together. The excluded condition and this one are mutually exclusive.

Excludes2 — not included here, but the patient may have both. Code both when documented.

Instructional notes 4

E87.8code

Inclusion terms

Electrolyte imbalance NOS
Hyperchloremia
Hypochloremia

E00-E89chapter

Notes

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.E05.8 E07.0 E16-E31 E34.-

Index entries leading here 10

Disorder (of) — see also Disease
- balance
  - acid-base E87.8
  - fluid NEC E87.8
  - electrolyte E87.8
- fluid balance E87.8
- electrolyte (balance) NEC E87.8
- metabolism NOS E88.9
  - sodium E87.8
Disturbance (s) — see also Disease
- acid-base equilibrium E87.8
- metabolism E88.9
  - sodium NEC E87.8
Findings, abnormal, inconclusive, without diagnosis — see also Abnormal
- bicarbonate E87.8
- chloride E87.8
Decrease (d)
- tolerance
  - salt and water E87.8
Syndrome — see also Disease
- disequilibrium E87.8
Imbalance R26.89
- electrolyte E87.8
Electrolyte imbalance E87.8
Hyperchloremia E87.8
Hyperelectrolytemia E87.8
Hypochloremia E87.8

Alongside this code 8 same parent — E87

E87.0 Hyperosmolality and hypernatremia E87.1 Hypo-osmolality and hyponatremia E87.2 Acidosis category E87.3 Alkalosis E87.4 Mixed disorder of acid-base balance E87.5 Hyperkalemia E87.6 Hypokalemia E87.7 Fluid overload category

Medications 4

41 Bipolar and Related Disorders drugs 10 Feeding and Eating Disorders drugs 65 Sleep Initiation and Maintenance Disorders drugs 19 Trauma and Stressor Related Disorders drugs

MED-RT files conditions by MeSH, which carves the world differently from ICD-10. These are name matches on this code's description, offered as candidates — not as an assertion that they are this code.

Additional references

AHA Coding Clinic® Licence required

Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.

Risk adjustment

Maps to no condition category in any loaded model.

Presence is a property of the code. Untick a model to hide it everywhere.

This code

Billable: yes
Code set: FY2026
Parent: E87
Block: E70-E88
Siblings: 8

Present FY2024–FY2027.