99285

Emergency department visit for the evaluation and management of a patient, which requires a high level of medical decision making

The current procedural terminology (CPT) code 99285 represents an Emergency Department (ED) visit for the evaluation and management (E/M) of a patient that necessitates a High level of Medical Decision Making (MDM). Per AMA E/M guidelines, time is not a descriptive component for emergency department visits (99281-99285); therefore, code selection for ED services is solely based on the level of MDM. A high level of MDM requires extensive number and complexity of problems addressed, extensive amount and/or complexity of data to be reviewed and analyzed, and a high risk of complications and/or morbidity or mortality of patient management. This typically involves the evaluation of one or more acute or chronic illnesses or injuries that pose an immediate threat to life or bodily function, or an undiagnosed new problem with uncertain prognosis that poses a threat to life or bodily function. Management decisions often include emergency major surgery, parenteral controlled substances, or decisions regarding hospitalization to an intensive care unit.

Clinical Indications

  • Patients presenting with acute myocardial infarction (heart attack) or unstable angina.
  • Patients with signs and symptoms of acute stroke (ischemic or hemorrhagic).
  • Severe trauma, including polytrauma, severe head injury with altered mental status, or significant internal injuries.
  • Sepsis or septic shock with evidence of organ dysfunction and hemodynamic instability.
  • Acute respiratory failure or severe respiratory distress (e.g., status asthmaticus, acute exacerbation of COPD with impending respiratory arrest, pulmonary embolism).
  • Life-threatening hemorrhage (e.g., severe gastrointestinal bleed, ruptured aneurysm).
  • Status epilepticus or other acute severe neurological emergencies.
  • Diabetic ketoacidosis (DKA) or hyperosmolar hyperglycemic state (HHS) with severe metabolic derangements.
  • Acute altered mental status due to severe intoxication, metabolic encephalopathy, or severe infection.
  • Severe anaphylaxis with respiratory compromise or hemodynamic instability.

Procedure Steps

  1. Rapid initial assessment and stabilization of critically ill or injured patients upon arrival.
  2. Obtain a comprehensive history from the patient, family, or other reliable sources, focusing on life-threatening conditions.
  3. Perform a detailed physical examination targeting all affected and potentially affected organ systems.
  4. Order and interpret complex diagnostic tests, including advanced imaging (CT, MRI), extensive laboratory panels (e.g., cardiac enzymes, sepsis markers, arterial blood gases), and specialized tests (e.g., ECG, point-of-care ultrasound).
  5. Formulate and address a broad and complex differential diagnosis.
  6. Initiate immediate, high-risk interventions such as advanced airway management, mechanical ventilation, vasopressor support, fluid resuscitation, blood product transfusion, or emergent pharmacotherapy.
  7. Consult with multiple specialists (e.g., cardiology, neurology, surgery, critical care) for complex diagnostic or management decisions.
  8. Make critical decisions regarding patient disposition, including admission to an intensive care unit (ICU), operating room, or transfer to a higher level of care facility.
  9. Extensive documentation of the patient's condition, the complexity of medical decision making, all interventions, and the treatment plan.

Coding Guidelines

  • CPT code 99285 is selected based solely on the level of Medical Decision Making (MDM), which must be high. Time spent is not a factor for ED E/M code selection.
  • The documentation must clearly support a high level of MDM, including extensive problems addressed, extensive data reviewed, and high risk of complications from management decisions.
  • This code should be used for services provided in a facility that meets the definition of an emergency department, which is an organized, hospital-based facility providing unscheduled episodic services.
  • Do not report 99285 if critical care services (99291, 99292) are reported by the same physician for the same encounter, unless critical care services are provided for a distinct time period or for a distinct service, with appropriate documentation.
  • Documentation should include the chief complaint, history of present illness, review of systems, physical examination findings, assessment and plan, and clearly justify the medical necessity for the high-level service.
  • Associated procedures performed during the ED visit should be coded separately in addition to the E/M service.

Associated ICD-10 Codes