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CPT 99309: Subsequent Nursing Facility E/M Visit, Moderate Complexity
CPT code 99309 represents a subsequent nursing facility evaluation and management (E/M) visit for an established patient that requires moderate medical decision making or at least 30 minutes of total provider time on a single date. This code is commonly used for ongoing care of residents in skilled nursing or long-term care facilities and is central to documenting follow-up assessments, treatment adjustments, and care coordination in these settings. Nationally, accurate use of 99309 affects clinical documentation, facility workflows, and payer adjudication of E/M services in post-acute care.
Key payers addressed in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise explanation of the code’s clinical scope, comparisons to adjacent nursing facility E/M codes, common payer considerations, and the typical clinical contexts in which 99309 is billed. The publication highlights benchmark concepts and coding differentials relevant to clinicians and billing staff, clarifies the service type and site of service, and outlines implications for encounter documentation. This national-level summary is intended to help revenue cycle teams, clinicians, and compliance staff understand where 99309 fits within nursing facility E/M coding and what to expect from payer coverage practices.
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Billing Code Overview
CPT code 99309 describes a subsequent nursing facility care visit for an established patient that involves evaluation and management (E/M). The service is provided when the visit requires medical decision making of moderate complexity or when the provider documents at least 30 minutes of total time spent on the encounter on a single date.
Service type: Subsequent nursing facility E/M visit
Typical site of service: Nursing facility (skilled nursing facility or long-term care facility)
National Reimbursement Benchmarks
Medicare’s mean rate of $117.7 sits slightly below BUCA’s average commercial mean of $122.4, indicating that commercial plans as represented by BUCA pay modestly higher on average for CPT 99309 than Medicare. Blue Cross Blue Shield and UnitedHealth Group also show means above Medicare at $122.5 and $126.5 respectively, while Aetna ($97.2) and Cigna ($143.2) bracket the market with Cigna notably higher than Medicare.
Assessing dispersion using the interquartile range (P75 minus P25), Blue Cross Blue Shield has a range of $44.6, UnitedHealth Group’s range is $68.7, Cigna’s range is $89.7, Aetna’s range is $28.0, and BUCA’s range is $53.8. Aetna exhibits the tightest IQR at $28.0, while Cigna displays the widest dispersion at $89.7, suggesting greater variability in negotiated commercial payments among payers.