E87.4

Billable
ChapterE00–E89
Ranksubcategory
Official Description

Mixed disorder of acid-base balance

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).
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
E87.4Mixed disorder of acid-base balance

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to E87.4:

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 E87.4. Use them as entry terms for search, then confirm final coding instructions in the Tabular List and notes above.

7 raw paths
Abnormal, abnormality, abnormalities1 unique routes
acid-base balance (mixed)→E87.4
Acidosis (lactic)3 unique routes
metabolic NEC
with respiratory acidosis→E87.4
respiratory(2 variants)
complicated by(2 variants)
metabolic(2 variants)
acidosis→E87.4
alkalosis→E87.4
Alkalosis1 unique routes
metabolic
with respiratory acidosis→E87.4
Disorder (of)1 unique routes
balance
acid-base
mixed→E87.4
Disturbance (s)1 unique routes
acid-base equilibrium
mixed→E87.4

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

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