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CPT 99310: Subsequent Nursing Facility E/M Visit, High Complexity
CPT code 99310 represents a subsequent nursing facility evaluation and management (E/M) visit for established patients when care requires high complexity medical decision making or when the provider documents at least 45 minutes of total time on the date of service. This code is used nationally to capture higher-intensity follow-up care in skilled nursing and long-term care settings, and it has implications for clinical documentation, resource allocation, and prospective payment considerations.
Key payers addressed include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise explanation of the clinical context for using CPT code 99310, comparisons to related subsequent nursing facility codes, and documentation criteria that distinguish this high-complexity or time-based service. The publication also summarizes common billing modifiers and associated provider taxonomies used with this service and lists typical ICD-10 diagnoses encountered in this setting.
This coverage is intended for national audiences involved in revenue cycle, clinical operations, and compliance who need a clear reference on when CPT code 99310 applies, how it differs from lower-level subsequent nursing facility codes, and what elements of the encounter drive selection of this code.
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Billing Code Overview
CPT code 99310 describes a subsequent nursing facility care visit for an established patient involving evaluation and management (E/M). The encounter requires either medical decision making of high complexity or at least 45 minutes of total provider time 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
National means show Medicare at $167.9 versus BUCA (average commercial) at $178.5, a modest commercial premium of $10.6 above Medicare. That gap places BUCA slightly above Medicare’s central payment level but within a narrow band compared with larger commercial payers; Medicare’s mean of $167.9 sits near the middle of the overall payer distribution.
Dispersion measured as P75 minus P25 highlights which payers are most and least variable: Blue Cross Blue Shield has a range of $65.0, Cigna shows the widest spread at $135.2, UnitedHealth Group has a range of $103.7, Aetna’s spread is $39.2, and BUCA’s interquartile range is $78.9. This indicates Aetna is the tightest among these payers while Cigna is the most variable in its middle 50% of rates.