G2211 is an add-on code that can be used for evaluation and management (E/M) visits that are part of ongoing care for a patient's complex or serious condition. It can be listed separately from office or outpatient E/M visits.
Keep in mind:
It is used in conjunction with an office visit.
G2211 is not payable when the office visit is reported with modifier 25.
Diagnosis-There is no set list of codes but the diagnosis should be for a chronic condition that requires repeated long-term follow up by a primary care professional vs for a condition in which the patient may be treated several times and then discharged/resolved.