| G0431 | Drug screen, qualitative; multiple drug classes by high complexity test method (e.g., immunoassay, enzyme assay), per patient encounter |
| G0434 | Drug screen, other than chromatographic; any number of drug classes, by clia waived test or moderate complexity test, per patient encounter |
| G2211 | Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's single, serious condition or a complex condition. (add-on code, list separately in addition to office/outpatient evaluation and management visit, new or established) |
