All ICD10 Codes

E87.8

Billable
ChapterE00–E89
Ranksubcategory
Official Description

Other disorders of electrolyte and fluid balance, not elsewhere classified

Metadata & Insights
  • •2026 ICD-10-CM Edition - Effective October 1, 2025.
  • •Billable/specific code (valid for reimbursement).
  • •Chapter 4: Endocrine, Nutritional and Metabolic Diseases (E00-E89).

Instructional Notes

Includes
  • Electrolyte imbalance NOS
  • Hyperchloremia
  • Hypochloremia
General instructions are available for the parent sections:
View CH4 NotesView E70-E88 NotesView E87 Notes

Clinical Hierarchy

CH4Endocrine, nutritional and metabolic diseases (E00-E89)
E70-E88Metabolic disorders (E70-E88)
E87Other disorders of fluid, electrolyte and acid-base balance
E87.8Other disorders of electrolyte and fluid balance, not elsewhere classified

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to E87.8:

categoryE87
Other disorders of fluid, electrolyte and acid-base balance
View context instructions
blockE70-E88
Metabolic disorders (E70-E88)
View context instructions
chapterCH4
Endocrine, nutritional and metabolic diseases (E00-E89)
View context instructions

Alphabetic Index Mentions

These are Diagnosis Index lookup paths that route to E87.8. Use them as entry terms for search, then confirm final coding instructions in the Tabular List and notes above.

17 raw paths
Decrease (d)1 unique routes
tolerance
salt and water→E87.8
Disorder (of)6 unique routes
balance(3 variants)
acid-base→E87.8
electrolyte→E87.8
fluid NEC→E87.8
electrolyte (balance) NEC→E87.8
fluid balance→E87.8
metabolism NOS
sodium→E87.8
Disturbance (s)2 unique routes
acid-base equilibrium→E87.8
metabolism
sodium NEC→E87.8
Electrolyte imbalance1 unique routes
Direct index entry→E87.8
Findings, abnormal, inconclusive, without diagnosis2 unique routes
bicarbonate→E87.8
chloride→E87.8
Hyperchloremia1 unique routes
Direct index entry→E87.8
Hyperelectrolytemia1 unique routes
Direct index entry→E87.8
Hypochloremia1 unique routes
Direct index entry→E87.8
Imbalance1 unique routes
electrolyte→E87.8
Syndrome1 unique routes
disequilibrium→E87.8

MS-DRG Classification

2026 v43.1

This code is grouped within the following Diagnosis Related Group(s) for clinical reimbursement:

DRG 640
Miscellaneous Disorders of Nutrition, Metabolism, Fluids and Electrolytes with MCC
DRG 641
Miscellaneous Disorders of Nutrition, Metabolism, Fluids and Electrolytes without MCC
DRG 791
Prematurity with Major Problems
DRG 793
Full Term Neonate with Major Problems

Cross Reference

Find Procedures (ICD-10-PCS)

Find surgical and procedural codes related to Other disorders of electrolyte and fluid balance, not elsewhere classified.

Search PCS Codes