ICD-10-CM 2027
ICD-10 code for loss acute fluid
From the official ICD-10-CM alphabetic index entry “Fluid › loss (acute)”. Page updated September 29, 2026.
About coding loss acute fluid
The ICD-10-CM code for loss acute fluid is E86.9 (Volume depletion, unspecified).
Within E86, choose E86.9 (unspecified) only when documentation doesn't support a more specific option: Dehydration (E86.0) and Hypovolemia (E86.1).
Use an additional code(s) for any associated disorders of electrolyte and acid-base balance (E87.-).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
Common questions about loss acute fluid ICD-10 codes
What is the ICD-10 code for loss acute fluid?
- E86.9 — Volume depletion, unspecified.
Is E86.9 billable?
- Yes. E86.9 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can E86.9 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict E86.9 as a principal diagnosis.
Is E86.9 a CC or MCC?
- No. E86.9 is neither a CC nor an MCC under MS-DRG v44.0.