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CPT 99213: Established Patient Office Visit, Low Complexity
CPT code 99213 denotes an evaluation and management office or outpatient visit for an established patient involving a low level of medical decision making or at least 20 minutes of total provider time on a single date. This is one of the most commonly billed mid‑level E/M codes for primary care and general medicine, reflecting routine follow‑up, problem management, and chronic disease monitoring. Nationally, 99213 matters because it captures a large volume of primary care encounters and contributes substantially to outpatient service utilization and payment mix.
Key payers in this overview include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise briefing on how 99213 is defined clinically, typical sites of service, common clinical diagnoses associated with the code, and the adjacent codes used for shorter or longer established‑patient visits. The publication summarizes billing context, common modifiers used with outpatient E/M services (listed elsewhere), and comparable service levels such as 99212 and 99214 to help interpret encounter intensity.
This analysis provides benchmarks and operational context useful for coding accuracy, revenue cycle alignment, and clinical workflow design. Data not available in the input is noted where applicable.
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Billing Code Overview
CPT code 99213 represents an office or other outpatient visit for an established patient centered on evaluation and management. The visit reflects a low level of medical decision making and/or a total time of 20 or more minutes spent by the provider on the encounter on a single date.
Service type: Evaluation and Management (established patient office/outpatient visit)
Typical site of service: Office or other outpatient setting (clinic, physician office)
National Reimbursement Benchmarks
Medicare’s mean rate for CPT 99213 sits at $98.3, virtually aligned with BUCA’s average commercial mean of $110.1, indicating commercial contracts on average pay modestly above Medicare for this code. The proximity of those means suggests limited divergence between a representative commercial benchmark and Medicare reimbursement for outpatient established visit level 3.
Dispersion (P75 minus P25) highlights where commercial variability concentrates: Blue Cross Blue Shield shows a spread of $59.0 ($142.4 - $82.5), UnitedHealth Group a spread of $60.6 ($127.4 - $67.8), Cigna a spread of $60.3 ($120.9 - $57.6), BUCA a spread of $59.7 ($133.9 - $74.2), and Aetna the tightest at $52.5 ($119.2 - $64.5). These ranges reflect relatively comparable variability across major payers, with Aetna exhibiting the narrowest P25–P75 window and UnitedHealth Group the widest.