--- title: Box 18 – Hospitalization Dates description: What Box 18 of the CMS-1500 covers and how to record hospitalization dates on a claim or the client's policy in Pabau. --- [Skip to content](https://support.pabau.com/en/pabau2/box-18-hospitalization-dates#main-content) [![pabau logo white](https://support.pabau.com/hubfs/pabau%20logo%20white.svg)](https://support.pabau.com/en/pabau2?hsLang=en) Open main navigation Close main navigation - [Get Support](https://pabau.com/support-center/) [Get Support](https://pabau.com/support-center/) Pabau Knowledge Base - There are no suggestions because the search field is empty. 1. [Pabau Knowledge Base](https://support.pabau.com/en/pabau2?hsLang=en) 2. [Insurance Billing](https://support.pabau.com/en/pabau2/insurance-billing?hsLang=en) 3. [US Insurance Billing Additional Resources](https://support.pabau.com/en/pabau2/insurance-billing?hsLang=en#us-insurance-billing-additional-resources) # Box 18 – Hospitalization Dates On the CMS-1500 claim form, **Box 18** reports hospitalization dates related to the services being billed. This guide explains what the box means and how Pabau handles it. **NOTE:** This article is part of the *US Insurance Billing Additional Resources* series, which walks through every box of the CMS-1500. If you are new to claims in Pabau, start with [Creating a US Professional (CMS 1500) Claim](https://support.pabau.com/en/pabau2/creating-a-us-professional-cms-1500-claim?hsLang=en). ## Box 18 — Hospitalization dates related to current services ![Box 18 of the CMS-1500 claim form with FROM and TO date cells for hospitalization](https://support.pabau.com/hubfs/Pabau%202%20Knowledge%20Base/cms1500-box18-form.png) Box 18 carries a **FROM** and a **TO** date — the admission and discharge dates of a hospital stay tied to the services on the claim. It applies when the patient is being treated for a condition that led to a hospital admission and the payer needs those dates to adjudicate the claim. The box is situational, and outpatient professional claims rarely use it. **How Pabau fills it** Enter the dates in **Hospitalised from** and **Hospitalised until** in the claim's **Condition dates** section. They are filled in from the client's policy when you recorded them there (**Hospitalization From** and **Hospitalization Until**), and you can change them for one claim. Pabau prints them in Box 18 and sends them on the electronic claim. Claims from Pabau are outpatient professional claims, which rarely need these dates, so leave them blank unless the payer asks. **NOTE:** Use the admission and discharge dates of the hospital stay the payer is asking about, not the dates of your own visits. 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