99221
Initial hospital care, per day, for the evaluation and management of a patient, requiring 3 key components: a detailed or comprehensive history, a detailed or comprehensive examination, and medical decision-making that is straightforward or of low complexity. Typically, the admitting problem(s) are of low severity with 30 minutes spent at the bedside and on the patient’s hospital floor or unit.

99222
Initial hospital care, per day, for the E/M of a patient, requiring 3 key components: a comprehensive history, a comprehensive examination, and MDM of moderate complexity. Typically, the admitting problem(s) are of moderate severity with 50 minutes spent at the bedside and on the patient’s hospital floor or unit.

99223
Initial hospital care, per day, for the E/M of a patient, requiring 3 key components: a comprehensive history, a comprehensive examination, and MDM of high complexity. Typically, the admitting problem(s) are of high severity with 70 minutes spent at the bedside and on the patient’s hospital floor or unit.

99231
Subsequent hospital care, per day, for the evaluation and management of a patient, requiring at least 2 of these 3 key components: a problem focused interval history, a problem focused examination, and medical decision-making that is straightforward or of low complexity. Typically, the patient is stable, recovering, or improving with 15 minutes spent at the bedside and on the patient’s hospital floor or unit.

99232
Subsequent hospital care, per day, for E/M of a patient, requiring at least 2 of these 3 key components: an expanded problem focused interval history, an expanded problem focused examination, and MDM of moderate complexity. Typically, the patient is responding inadequately to therapy or has developed a minor complication with 25 minutes spent at the bedside and on the patient’s hospital floor or unit.

99233
Subsequent hospital care, per day, for E/M of a patient, requiring at least 2 of these 3 key components: a detailed interval history, a detailed examination, and MDM of high complexity. Usually, the patient is unstable or has developed a significant complication or a significant new problem with 35 minutes spent at the bedside and on the patient’s hospital floor or unit.