# Column cms.mbsf_ab_2011.COVSTART ## Overview of column COVSTART in table cms.mbsf_ab_2011 | | | | ----------------------------- | ---------------------- | | Table | [cms.mbsf_ab_2011](../cms.mbsf_ab_2011.md) | | Qualified name | cms.mbsf_ab_2011.COVSTART | | Datatype | DATE | | Reference | [https://resdac.org/cms-data/variables/medicare-coverage-start-date](https://resdac.org/cms-data/variables/medicare-coverage-start-date) | Medicare Coverage Start Date | Key | Value | | --- | ----- | | long_name | COVSTART | | original_type | DATE | | width | 8.0 |