Hospitalists CPT Codes and Modifiers for 2025

Hospitalists are the backbone of inpatient care—managing admissions, daily rounds, critical care, discharges, and transitions. With a fast-paced workflow and frequent handoffs, hospitalist billing needs to be precise and well-documented.

This guide includes the most commonly used Hospitalist CPT codes and modifiers for 2025, plus ICD-10 codes and billing tips to help prevent denials and ensure full reimbursement.

Initial Hospital Care

Subsequent Hospital Visits (Daily Rounds)

Hospital Discharge Services

Observation Care

Critical Care Services

Transition of Care & Prolonged Services

Modifiers Commonly Used by Hospitalists

Common ICD-10 Codes Used in Hospital Medicine

Hospitalist Billing Tips for 2025

• Use modifier -AI when multiple providers are involved in inpatient care.
• Only one provider may bill initial hospital care per admission.
• Time-based documentation is crucial for critical care and prolonged services.
• Verify discharge time for 99239 billing (>30 minutes).
• Support medical necessity for high-level follow-up codes like 99233.

Final Thoughts

Hospitalists handle some of the most complex billing scenarios in modern medicine. With proper documentation and up-to-date coding knowledge, your practice can reduce errors, avoid audits, and get paid what it deserves. Use this Hospitalist CPT coding guide for 2025 to keep your billing on track.

For informational purposes only.