Other disorders of fluid, electrolyte and acid-base balance (E87) ICD-10-CM
The E87 code range covers other disorders of fluid, electrolyte and acid-base balance with 17 ICD-10-CM diagnosis codes. 14 of them are billable and valid for claim submission in fiscal year 2027, and the category headers group them but cannot themselves be billed.
Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
Codes in the E87 Range 17 codes · 14 billable
- E87 Other disorders of fluid, electrolyte and acid-base balanceNon-billable
- E87.0 Hyperosmolality and hypernatremia
- E87.1 Hypo-osmolality and hyponatremia
- E87.2 AcidosisNon-billable
- E87.20 Acidosis, unspecified
- E87.21 Acute metabolic acidosis
- E87.22 Chronic metabolic acidosis
- E87.29 Other acidosis
- E87.3 Alkalosis
- E87.4 Mixed disorder of acid-base balance
- E87.5 Hyperkalemia
- E87.6 Hypokalemia
- E87.7 Fluid overloadNon-billable
- E87.70 Fluid overload, unspecified
- E87.71 Transfusion associated circulatory overload
- E87.79 Other fluid overload
- E87.8 Other disorders of electrolyte and fluid balance, not elsewhere classified
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the E87 range.
Acidosis
A pathologic condition of acid accumulation or depletion of base in the body. The two main types are RESPIRATORY ACIDOSIS and metabolic acidosis, due to metabolic acid build up.
Alkalosis
A pathological condition that removes acid or adds base to the body fluids.
Fluid Overload
A finding indicating the presence of fluid accumulation in tissues and body cavities.
Hyperkalemia
Abnormally high potassium concentration in the blood, most often due to defective renal excretion. It is characterized clinically by electrocardiographic abnormalities (elevated T waves and depressed P waves, and eventually by atrial asystole). In severe cases, weakness and flaccid paralysis may occur. (Dorland, 27th ed)
Hypernatremia
Excessive amount of sodium in the blood. (Dorland, 27th ed)
Hypokalemia
Abnormally low potassium concentration in the blood. It may result from potassium loss by renal secretion or by the gastrointestinal route, as by vomiting or diarrhea. It may be manifested clinically by neuromuscular disorders ranging from weakness to paralysis, by electrocardiographic abnormalities (depression of the T wave and elevation of the U wave), by renal disease, and by gastrointestinal disorders. (Dorland, 27th ed)
Hyponatremia
Deficiency of sodium in the blood; salt depletion. (Dorland, 27th ed)
Ketosis
A condition characterized by an abnormally elevated concentration of KETONE BODIES in the blood (acetonemia) or urine (acetonuria). It is a sign of DIABETES COMPLICATION, starvation, alcoholism or a mitochondrial metabolic disturbance (e.g., MAPLE SYRUP URINE DISEASE).
About the E87 Code Range
These metabolic disorders involve fluid, electrolyte, or acid-base balance.
E87.0 and E87.1 distinguish high from low osmolality and sodium levels. Acid-base codes separate excess acidity (acidosis), excess alkalinity (alkalosis), and mixed disorders. Acidosis splits into unspecified, acute metabolic, chronic metabolic, and other types.
Other codes distinguish high from low potassium levels. Fluid overload splits into unspecified, transfusion-associated circulatory overload, and other types. E87.8 identifies other electrolyte and fluid balance disorders not classified elsewhere.
Questions About This Page
How many billable codes are in the E87 range?
Of the 17 codes in this range, 14 are billable and valid for claim submission from October 1, 2026 through September 30, 2027. Category header codes group them but cannot be reported on claims.
What does the E87 range classify?
The range classifies other disorders of fluid, electrolyte and acid-base balance. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2027 ICD-10-CM Tabular List and order file, effective October 1, 2026 through September 30, 2027.
