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Enteral Nutrition Units of Service (UOS) Calculator

In the form below, enter

  • "From" and "To" dates for the supply of nutrition being billed, using the MM/DD/YY format
  • Calories per day ordered by the treating practitioner

Click "Update," and the calculator will display the UOS for claim submission.

Note: Effective for dates of service on or after February 6, 2024, standard rounding rules do not apply to the calculation of enteral nutrition UOS. This calculator rounds up fractional UOS to the next whole number.


Note: Claims for enteral nutrition require a "From" and "To" date span.

Disclaimer: CGS' online tools and calculators are informational and educational tools only, designed to assist suppliers and providers in submitting claims correctly. CGS makes no guarantee that this resource will result in Medicare reimbursement for services provided. Although we've made every reasonable effort to provide effective resources, CGS is not responsible for the consequences of any decisions or actions taken in reliance upon or as a result of the information that these tools provide. CGS is not responsible for any human or mechanical errors or omissions.


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