CMS-1500 · Box 18

Hospitalization dates related to current services.

What goes here

MM/DD/YY admission and discharge range when the service is bundled with an inpatient stay. Blank for outpatient dental.

Common mistakes

Inpatient dates are keyed on a routine outpatient claim. Only the admission date is recorded; the discharge date is omitted, so a payer reads the stay as still active.