E86.0 – Dehydration

ICD-10-CM 2027 diagnosis code · Metabolic disorders

Billable code

ICD-10-CM code E86.0

Code: E86.0 (claims format: E860)
Description: Dehydration
Billable: Yes – valid for HIPAA-covered transactions
Valid for: Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter: 4. Endocrine, nutritional and metabolic diseases (E00-E89)
Block: E70-E88 Metabolic disorders
Parent codes: E86

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

E86 – Volume depletion

Excludes1 (not coded here):

dehydration of newborn (P74.1)
postprocedural hypovolemic shock (T81.19)
traumatic hypovolemic shock (T79.4)

Excludes2 (not included here):

hypovolemic shock NOS (R57.1)

Use additional code:

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

Block E70-E88

Excludes1 (not coded here):

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)

Excludes2 (not included here):

Ehlers-Danlos syndromes (Q79.6-)

Index terms for E86.0

Entries in the ICD-10-CM alphabetic index that lead to this code:

Related codes in E86

E86.1 – HypovolemiaBillable
E86.9 – Volume depletion, unspecifiedBillable

Frequently asked questions

What is ICD-10 code E86.0?

E86.0 is the ICD-10-CM code for dehydration, in the block E70-E88 (Metabolic disorders).

Is E86.0 a billable code?

Yes. E86.0 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does E86.0 belong to?

It belongs to category E86 – Volume depletion.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.