E87: Other disorders of fluid, electrolyte and acid-base balance
Codes under E87 (Other disorders of fluid, electrolyte and acid-base balance). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.
| Code | Description | Billable |
|---|---|---|
| E87.0 | Hyperosmolality and hypernatremia | ✓ |
| E87.0 | Hyperosmolality and hypernatremia | ✓ |
| E87.1 | Hypo-osmolality and hyponatremia | ✓ |
| E87.1 | Hypo-osmolality and hyponatremia | ✓ |
| E87.2 | Acidosis | — |
| E87.2 | Acidosis | — |
| E87.3 | Alkalosis | ✓ |
| E87.3 | Alkalosis | ✓ |
| E87.4 | Mixed disorder of acid-base balance | ✓ |
| E87.4 | Mixed disorder of acid-base balance | ✓ |
| E87.5 | Hyperkalemia | ✓ |
| E87.5 | Hyperkalemia | ✓ |
| E87.6 | Hypokalemia | ✓ |
| E87.6 | Hypokalemia | ✓ |
| E87.7 | Fluid overload | — |
| E87.7 | Fluid overload | — |
| E87.8 | Other disorders of electrolyte and fluid balance, not elsewhere classified | ✓ |
| E87.8 | Other disorders of electrolyte and fluid balance, not elsewhere classified | ✓ |
| E87.20 | Acidosis, unspecified | ✓ |
| E87.20 | Acidosis, unspecified | ✓ |
| E87.21 | Acute metabolic acidosis | ✓ |
| E87.21 | Acute metabolic acidosis | ✓ |
| E87.22 | Chronic metabolic acidosis | ✓ |
| E87.22 | Chronic metabolic acidosis | ✓ |
| E87.29 | Other acidosis | ✓ |
| E87.29 | Other acidosis | ✓ |
| E87.70 | Fluid overload, unspecified | ✓ |
| E87.70 | Fluid overload, unspecified | ✓ |
| E87.71 | Transfusion associated circulatory overload | ✓ |
| E87.71 | Transfusion associated circulatory overload | ✓ |
| E87.79 | Other fluid overload | ✓ |
| E87.79 | Other fluid overload | ✓ |
Frequently asked questions
What is ICD-10-CM code E87?
E87 is an ICD-10-CM category covering Other disorders of fluid, electrolyte and acid-base balance. It contains 32 more specific diagnosis codes, 28 of which are billable.
Is E87 a billable code?
No — E87 is a category header and isn't billable on its own. Code to the highest level of specificity using one of its subcodes (for example E87.0 — Hyperosmolality and hypernatremia). 28 of the 32 codes under E87 are billable.
What codes fall under E87?
E87 includes E87.0, E87.0, E87.1, E87.1, E87.2, plus 27 more. See the full list with descriptions and billable status above.
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Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.
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