Summary & Overview
CPT 99345: Home E/M Visit for New Patient, High Complexity or 75 Minutes
CPT code 99345 designates a home or residence evaluation and management (E/M) visit for a new patient characterized by a high level of medical decision making or by at least 75 minutes of total provider time on a single date. This code matters nationally as it captures intensive, time-consuming E/M services delivered in the patient’s residence rather than in a clinic or office, affecting care delivery patterns, access to home-based care, and payment for complex encounters.
Key payers discussed include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise explanation of the code’s clinical context and service setting, comparison points across major payers, common modifiers and administrative considerations, and benchmarks or policy updates where available. The publication highlights how CPT code 99345 fits into home-based E/M coding, when the code applies, and which elements—high medical decision making or documented total time—establish the appropriate use.
This summary provides clinicians, billing professionals, and policy analysts with the primary facts needed to identify when 99345 is appropriate, understand payer coverage focus at a national level, and locate additional resources for documentation and claims processing. Data not available in the input is noted where applicable in detailed sections.
Billing Code Overview
CPT code 99345 describes an evaluation and management (E/M) visit for a new patient provided in the home or residence setting. The encounter qualifies when the visit involves high medical decision making or when the provider spends at least 75 minutes of total time on a single date of service.
Service type: Home/residence E/M for a new patient
Typical site of service: Patient's home or residence
Clinical & Coding Specifications
Clinical Context
A home visit for a new adult patient with complex medical needs. A primary care clinician (family medicine or internal medicine) or a geriatrician travels to the patient’s residence to perform a comprehensive evaluation and management encounter. The patient is a 78-year-old with multiple chronic conditions such as congestive heart failure, chronic kidney disease, and insulin-dependent diabetes who has limited mobility and difficulty attending office visits. The clinician performs a focused history and comprehensive physical examination, reviews recent hospital discharge summaries and medication lists, coordinates with home health nursing and durable medical equipment suppliers, orders labs and imaging as needed, and documents medical decision making at a high complexity level or records at least 75 minutes of total time spent on the encounter on a single date. Typical workflow includes pre-visit chart review, travel to the home, direct patient evaluation, family or caregiver counseling, coordination of follow-up care, and post-visit documentation and electronic order entry. Typical goals are medication reconciliation, stabilization of acute issues, advanced care planning discussions, and arranging outpatient or home-based services.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
25 | Significant, separately identifiable E/M service by the same physician on the same day | Use when an unrelated E/M service is performed in addition to a procedure on the same day during the home visit billing period. |