Occurrence Code 55 Required When Reporting Date of Death November 3, 2015 Centers for Medicare & Medicaid Services (CMS) require the occurrence code 55 and the date of death to be included when billing an institutional claim with the following patient discharge status codes: 20 (expired) 40 (expired at home) 41 (expired in a medical facility) 42 (expired – place unknown) For additional information on the use of code 55, refer to the CMS Manual System – Change Request.