E86.0 Dehydration

Billable ICD-10-CM code, FY2026.

Applies from E86 Volume depletion

Excludes1 (never code together)

• 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.-)

MS-DRG index

Defines the logic of DRG(s) 640-641 in MDC 10.

Approximate ICD-9-CM (GEMs)

• 276.51 Dehydration

Code annotations containing back-references to E86.0

Back-references to E86.0

• Type 2 Excludes: E63 Other nutritional deficiencies ("dehydration (E86.0)")
• Code Also: R11.16 Cannabis hyperemesis syndrome ("dehydration (E86.0)")
• Type 1 Excludes: R68.2 Dry mouth, unspecified ("dry mouth due to dehydration (E86.0)")

Back-references to E86

• Type 2 Excludes: G11 Hereditary ataxia ("metabolic disorders (E70-E88)")
• Code First: G63 Polyneuropathy in diseases classified elsewhere ("metabolic diseases (E70-E88)")
• Type 2 Excludes: G71 Primary disorders of muscles ("metabolic disorders (E70-E88)")
• Code First: H42 Glaucoma in diseases classified elsewhere ("specified metabolic disorder (E70-E88)")
• Type 2 Excludes: N25.0 Renal osteodystrophy ("metabolic disorders classifiable to E70-E88")
• Type 2 Excludes: N25.81 Secondary hyperparathyroidism of renal origin ("metabolic disorders classifiable to E70-E88")
• Type 1 Excludes: P59 Neonatal jaundice from other and unspecified causes ("jaundice due to inborn errors of metabolism (E70-E88)")
• Type 2 Excludes: R79.1 Abnormal coagulation profile ("abnormality of fluid, electrolyte or acid-base balance (E86-E87)")

Diagnosis Index entries for E86.0

• Anhydration
• Anhydremia
• Cachexia › dehydration
• Dehydration
• Dry, dryness › mouth › due to dehydration
• Luetscher's syndrome (dehydration)
• Syndrome › Luetscher's (dehydration)

Nearby codes

• E86 Volume depletion
• E86.0 Dehydration (this code)
• E86.1 Hypovolemia
• E86.9 Volume depletion, unspecified