E87.1
E87.1: Hypo-osmolality and hyponatremia
Billable / specific codeICD-10-CM
E87.1 is a billable, specific ICD-10-CM code for hypo-osmolality and hyponatremia. It is valid for submission on a claim.
Check E87.1 with the rest of the claim: free scrubberExcludes1: never code together
These conditions cannot occur together. Billing both on the same encounter is a denial.
- syndrome of inappropriate secretion of antidiuretic hormone (E22.2)
Inclusion terms
Alternative wordings a physician may use in the chart for this same code.
- Sodium [Na] deficiency
Excludes1 inherited from the categories above E87.1
A category’s note binds every code beneath it.
Written on E87: Other disorders of fluid, electrolyte and acid-base balance
Risk adjustment
No CMS-HCC V28 category: this code does not change a RAF score.
Medicare coverage
E87.1 is named in 4 Medicare coverage policies: 4 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.
- A57189Billing and Coding: Serum Magnesium
- A57204Billing and Coding: MRI and CT Scans of the Head and Neck
- A57326Billing and Coding: Electrocardiograms
- A57361Billing and Coding: Monitored Anesthesia Care
Alphabetic index entries that lead here
- Hypo-osmolality
- Hyponatremia
- Cramp›salt-depletion
- Deficiency, deficient›natrium
- Deficiency, deficient›salt
- Deficiency, deficient›sodium(Na)
- Depletion›salt or sodium
- Findings, abnormal, inconclusive, without diagnosis›sodium(deficiency)
- Low›salt syndrome
- Syndrome›hyponatremic
- Syndrome›hyposmolality
- Syndrome›salt›depletion
Code history
Unchanged in every release from FY2024 to FY2027.