Is ICD-10-CM code E87 billable?

No, E87 (Other disorders of fluid, electrolyte and acid-base balance) is a non-billable ICD-10-CM code. It must be coded to a more specific subcategory before it can be used for reimbursement.

What chapter does ICD-10-CM code E87 belong to?

E87 belongs to Chapter 4 of the ICD-10-CM tabular list: E00–E89 (Endocrine, Nutritional and Metabolic Diseases).

E87Non-billable

Other disorders of fluid, electrolyte and acid-base balance

Endocrine, Nutritional and Metabolic Diseases·Metabolic disorders (E70-E88)·category·FY 2026

Use a more specific code (7 billable, 2 non-billable)

E87.0Hyperosmolality and hypernatremia E87.1Hypo-osmolality and hyponatremia E87.2Acidosishas subcodes E87.3Alkalosis E87.4Mixed disorder of acid-base balance E87.5Hyperkalemia E87.6Hypokalemia E87.7Fluid overloadhas subcodes E87.8Other disorders of electrolyte and fluid balance, not elsewhere classified

CH4 Parent Instructions

Excludes1(Not coded here. Use a different code.)

transitory endocrine and metabolic disorders specific to newborn (P70-P74)

E70-E88 Parent Instructions

Excludes1(Not coded here. Use a different code.)

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. Code separately if applicable.)

Ehlers-Danlos syndromes (Q79.6-)

Instructional Notes

Excludes1(Not coded here. Use a different code.)

diabetes insipidus (E23.2)
electrolyte imbalance associated with hyperemesis gravidarum (O21.1)
electrolyte imbalance following ectopic or molar pregnancy (O08.5)
familial periodic paralysis (G72.3)
metabolic acidemia in newborn, unspecified (P19.9)

Clinical Hierarchy

BillableHas subcodes

CH4Endocrine, nutritional and metabolic diseases (E00-E89)

E70-E88Metabolic disorders (E70-E88)

E87Other disorders of fluid, electrolyte and acid-base balanceNot billable

E87.0Hyperosmolality and hypernatremiaBillable

E87.1Hypo-osmolality and hyponatremiaBillable

E87.2AcidosisSubcodes

E87.3AlkalosisBillable

E87.4Mixed disorder of acid-base balanceBillable

E87.5HyperkalemiaBillable

E87.6HypokalemiaBillable

E87.7Fluid overloadSubcodes

E87.8Other disorders of electrolyte and fluid balance, not elsewhere classifiedBillable

MS-DRG Classification

2026

No direct MS-DRG triggers identified.