--- title: Box 16 – Dates Patient Unable to Work description: What Box 16 of the CMS-1500 covers and how to record the dates a client was unable to work on a claim or their policy in Pabau. --- [Skip to content](https://support.pabau.com/en/pabau2/box-16-dates-patient-unable-to-work#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 16 – Dates Patient Unable to Work On the CMS-1500 claim form, **Box 16** reports the dates a patient was unable to work in their current occupation. 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 16 — Dates patient unable to work ![Box 16 of the CMS-1500 claim form with FROM and TO date cells](https://support.pabau.com/hubfs/Pabau%202%20Knowledge%20Base/cms1500-box16-form.png) Box 16 carries a **FROM** and a **TO** date — the date range during which the patient could not work in their current occupation because of the condition being treated. It matters when an injury caused missed work, which in practice means **employment-related (workers' comp) claims**; for everything else the box is left empty. **How Pabau fills it** Enter the dates in **Unable to work from** and **Unable to work until** in the claim's **Condition dates** section. They are filled in from the client's policy when you recorded them there (**Last Worked** and **Return to Work**), and you can change them for one claim. Pabau prints them in Box 16 and sends them on the electronic claim. Leave them blank when the patient missed no work, which is most claims. **NOTE:** Workers' comp carriers usually want these dates. Set **Employment related** to Yes in the Claim details section as well (Box 10). 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