E87.1
ICD-10BillableHypo-osmolality and hyponatremia
Official ICD-10-CM descriptor (FY2026)
Hypo-osmolality and hyponatremia
E87.1 is valid for submission on a claim — CMS flags it as a billable, specific code.
Inclusion terms
- Sodium [Na] deficiency
Excludes1
Not coded here. An Excludes1 code should never be reported at the same time as the code above it.
- syndrome of inappropriate secretion of antidiuretic hormone (E22.2)
Related codes in E87
Where this code sits
- Parent code
- E87
Krasyn AI Coder
Get code suggestions automatically as you type notes. Free for 50 analyses.
Install for Chrome — freeSource
ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.