# Column cms.medpar_2018.ACO_ID_NUM ## Overview of column ACO_ID_NUM in table cms.medpar_2018 | | | | ----------------------------- | ---------------------- | | Table | [cms.medpar_2018](../cms.medpar_2018.md) | | Qualified name | cms.medpar_2018.ACO_ID_NUM | | Datatype | VARCHAR(10) | | Reference | [https://resdac.org/cms-data/variables/claim-accountable-care-organization-aco-identification-number](https://resdac.org/cms-data/variables/claim-accountable-care-organization-aco-identification-number) | Accountable Care Organization (ACO) Identification Number | Key | Value | | --- | ----- | | long_name | ACO_ID_NUM | | original_type | CHAR | | width | 10.0 |