99233

🎯 CPT Code 99233 Documentation & Billing Guide

Last Updated: February 2026
Status: 2025 Medicare Fee Schedule Compliant

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CPT 99233 - Subsequent Hospital Care (Level 3)

Description & Explanation: This code represents the highest level of subsequent hospital care (daily rounds). It is used for patients who are unstable or have developed a significant new problem or complication requiring High complexity medical decision making.

• MDM: High (Level 5).

• Time: 50 minutes (total time on date of encounter).

• Status: Patient is typically unstable or has a significant complication.

Code Tree:

• Evaluation and Management

  • Hospital Inpatient or Observation Care

    • Subsequent Care

      • 99233: Subsequent hospital care, high MDM or 50 min

Technical Data:

• WRVU (2025): ~3.52

• Global Period: XXX

• Assistant Payable: No (Indicator 9)

• HCC Information: N/A

Bundling & Edits:

• Exclusive: Only one subsequent care code (99231-99233) per specialty per day.

• Prolonged Services: If time exceeds 65 minutes (50 min base + 15 min threshold), you may be able to bill G0316 (Medicare) or 99418 (Commercial, policy dependent).

Clinical Examples:

1. Septic Shock: Patient in ICU (if not billing critical care) or step-down with worsening hypotension requiring pressor adjustment and consideration of intubation.

2. Stroke Evolution: Patient admitted for TIA develops frank hemiplegia. Urgent neurology consult called, stat MRI ordered, transfer to higher level of care arranged.