25 and 59 and GT and 95 and QW are what are referred to as modifiers.
If you bill a 99214 it stands alone with no modifiers.
If you wish to bill 99214 and 90833 for the same encounter you would do:
99214 25
90833 59
If you did this encounter as telemedicine:
99214 25, 95
90833 59, 95
Some insurance will want the telemedicine encounter using a different code:
99214 25, GT
90833 59, GT
Let's say you also have a CLIA lab (with appropriate certification) and bill for 80305
99213 25
90833 59
96127 59
96127 59
80305 QW
CMS created a standard form, a way with which all data of an encounter shall be submitted to an insurance company. The CMS 1500 form.
Section 24, under box D you will find where CPT codes and the modifiers go.
Also be aware on the Section 24, under box B is the Place of Service. 11 denotes the usual outpatient office. Some insurance companies are okay with using 11 as the POS, with a 95 modifier above for telemedicine. Other insurance companies want you to use GT and the POS to be 02.
Also be aware on the Section 24, under box E is the diagnosis code 'linkage' where you will link up which diagnosis goes to which code. For instance you will likely associate A, B, C, D diagnosis for the 99214, but perhaps only B, C for 96127, and only D for 80305.
Still scratching your heads out there in SDN land? Google "CMS 1500 form" and then click on images and look at some random samples.
*you don't need every box filled in.
*you only need some boxes filled in.
*you'll learn what the minim is to submit a claim with experience.