2025 ICD-10-CM Diagnosis Code E86.0

Dehydration

• E86.0 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
• The 2025 edition of ICD-10-CM E86.0 became effective on October 1, 2024.
• This is the American ICD-10-CM version of E86.0 – other international versions of ICD-10 E86.0 may differ.

The following code(s) above E86.0 contain annotation back-references

 that may be applicable to E86.0:

• E00-E89  Endocrine, nutritional and metabolic diseases
• E70-E88  Metabolic disorders
• E86  Volume depletion

Approximate Synonyms

• Dehydration due to radiation
• Dehydration hypernatremic
• Dehydration secondary to radiation
• Dehydration, mild
• Dehydration, moderate
• Dehydration, severe
• Hypernatremic dehydration
• Mild dehydration
• Moderate dehydration
• Severe dehydration

Clinical Information

• A condition caused by the loss of too much water from the body. Severe diarrhea or vomiting can cause dehydration.
• A condition resulting from the excessive loss of water from the body. It is usually caused by severe diarrhea, vomiting or diaphoresis.
• A disorder characterized by excessive loss of water from the body. It is usually caused by severe diarrhea, vomiting or diaphoresis.
• Condition that results from excessive loss of water from a living organism.
• Decreased intravascular, interstitial, and/or intracellular fluid. This refers to dehydration, water loss alone without change in sodium.
• State of excessively reduced body water or water deficit.
• The condition that results from excessive loss of water from a living organism.
• When you’re dehydrated, your body doesn’t have enough fluid to work properly. An average person on an average day needs about 3 quarts of water. But if you’re out in the hot sun, you’ll need a lot more than that. Most healthy bodies are very good at regulating water. Elderly people, young children and some special cases – like people taking certain medications – need to be a little more careful.signs of dehydration in adults include
  • being thirsty
  • urinating less often than usual
  • dark-colored urine
  • dry skin
  • feeling tired
  • dizziness and fainting
  signs of dehydration in babies and young children include a dry mouth and tongue, crying without tears, no wet diapers for 3 hours or more, a high fever and being unusually sleepy or drowsy.if you think you’re dehydrated, drink small amounts of water over a period of time. Taking too much all at once can overload your stomach and make you throw up. For people exercising in the heat and losing a lot of minerals in sweat, sports drinks can be helpful. Avoid any drinks that have caffeine.

ICD-10-CM E86.0 is grouped within Diagnostic Related Group(s) (MS-DRG v42.0):

• 640 Miscellaneous disorders of nutrition, metabolism, fluids and electrolytes with mcc
• 641 Miscellaneous disorders of nutrition, metabolism, fluids and electrolytes without mcc
• 791 Prematurity with major problems
• 793 Full term neonate with major problems

Convert E86.0 to ICD-9-CMCode History

• 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
• 2017 (effective 10/1/2016): No change
• 2018 (effective 10/1/2017): No change
• 2019 (effective 10/1/2018): No change
• 2020 (effective 10/1/2019): No change
• 2021 (effective 10/1/2020): No change
• 2022 (effective 10/1/2021): No change
• 2023 (effective 10/1/2022): No change
• 2024 (effective 10/1/2023): No change
• 2025 (effective 10/1/2024): No change

Code annotations containing back-references to E86.0:

• Type 1 Excludes: R68.2
• Type 2 Excludes: E63

Diagnosis Index entries containing back-references to E86.0:

• Anhydration E86.0
• Anhydremia E86.0
• CachexiaR64
  • dehydration E86.0
• Dehydration E86.0
• Dry, dryness – see also condition
  • mouthR68.2
    • due to dehydration E86.0
• Luetscher’s syndrome E86.0 (dehydration)
• Syndrome – see also Disease
  • Luetscher’s E86.0 (dehydration)