​Using HCCI's data, we assessed the share among individuals younger than 65 years covered by employer-sponsored insurance from 2013 to 2017.  We assessed primary care spending using 2 main definitions: a definition which included the total spending on services rendered by primary care clinicians (broad definition) and one where only CPT codes for specific services specified as primary care services rendered by primary care clinicians (narrow definition).  For the broad definition, spending increased from $511 per person to $538, but it declined as a share of total spending from 8.97% to 8.04% from 2013 to 2017.  As for the narrow definition, the share of primary care spending in relation to total spending declined 4.60% to 4.35%.  To read more on this project, see the link below: