Nursing facility billing can be tricky, but CPT 99308 makes follow-up visits simple and compliant when used correctly. Designed for subsequent patient encounters with moderate complexity, this code ensures providers are fairly reimbursed while delivering ongoing, high-quality care.
Whether you’re adjusting treatment plans, monitoring recovery, or managing chronic conditions, understanding CPT 99308 is crucial for accurate billing, reduced claim denials, and smooth revenue cycles.
In this article, we’ll break down everything you need, from time requirements and documentation to modifiers and real-life examples, so you can confidently use this code every day.
What Is CPT Code 99308?
CPT 99308 is a subsequent nursing facility care code used for patients with moderate complexity conditions. Unlike initial evaluation codes, 99308 is specifically for follow-up visits in nursing facilities, ensuring providers are reimbursed for ongoing care.
This code is time-based and requires at least 20 minutes of face-to-face interaction with the patient. Providers must perform two of three core components:
- Expanded problem-focused history: Gathering relevant details about the patient’s current condition and prior treatments.
- Expanded problem-focused examination: Assessing the patient’s status beyond a basic checkup.
- Low-level medical decision-making (MDM): Evaluating treatment options and adjusting care plans with limited risk and data review.
CPT 99308 is ideal for managing chronic conditions, post-surgical care, or short-term rehab follow-ups, making it one of the most commonly used subsequent visit codes in skilled nursing facilities (SNFs).
Time Requirements for CPT Code 99308
Time requirement is crucial for accurate billing:
- Minimum Duration: 20 minutes of face-to-face interaction per day.
- Single Visit Limit: Only one CPT 99308 visit per patient per day can be billed, even if multiple encounters occur.
- Documentation Tip: Record start and end times to meet payer requirements and support medical necessity.
Even if the visit lasts longer than 20 minutes, the code is billed the same. Time documentation primarily ensures compliance and claim approval.
When to Use CPT Code 99308 (Applicable Scenarios)
Knowing when to bill 99308 prevents errors, claim denials, and compliance issues. Here are common scenarios where 99308 applies:
1. Chronic Condition Management
Example: A 72-year-old nursing facility resident with type 2 diabetes develops a minor foot ulcer. The provider spends 20 minutes evaluating the ulcer, reviewing glucose history, and adjusting the care plan. This follow-up qualifies for CPT 99308 because it is a subsequent visit with low-level decision-making.
2. Post-Surgical Recovery in Skilled Nursing Facility
Example: A 75-year-old woman recovering from a hip replacement reports stiffness and mild swelling. The provider performs a physical exam, adjusts mobility exercises, and monitors recovery during a 22-minute visit—perfectly fitting CPT 99308 requirements.
3. Post-Hospitalization Follow-Up
Example: An 81-year-old man recently discharged after pneumonia experiences mild shortness of breath. The provider evaluates his oxygen levels, recommends breathing exercises, and adjusts medications. A 20+ minute low-complexity visit like this is billable under CPT 99308.
When NOT to Use CPT Code 99308
Avoid misusing this code, which could lead to claim denials:
- Initial nursing facility visits: Use 99304–99306 instead.
- Hospital or outpatient settings: CPT 99308 is strictly for nursing facilities.
- High-complexity cases: Use 99309 or 99310 if medical decision-making is moderate to high.
- Visits under 20 minutes: Must meet the minimum time requirement.
Documentation Requirements for CPT Code 99308
Proper documentation is essential to support billing and prevent audits. A compliant record must include:
1. Patient History
- Chief complaint
- History of present illness (HPI)
- Relevant past, family, and social history (PFSH)
2. Examination
- Expanded problem-focused exam
- Detailed assessment of relevant organ systems
3. Medical Decision-Making (Low Complexity)
Must meet 2 of the following 3 criteria:
- Limited management options
- Limited data review
- Low risk of complications
4. Time
- Start and end times for the face-to-face encounter
- Verification of total visit duration (≥20 minutes)
Complete and accurate documentation ensures smooth reimbursement and reduces audit risk.
CPT Code 99308 Modifiers
Modifiers are essential when additional services occur on the same day as the subsequent visit. The most common is:
Modifier 25: Significant, Separately Identifiable E/M Service
Use modifier 25 when the follow-up visit is distinct from another procedure provided on the same day.
Example: You perform a wound debridement and then evaluate the patient’s post-pneumonia symptoms. CPT 99308 with modifier 25 ensures both services are reimbursed.
Always document the distinct nature of the E/M service to avoid audits or claim denials.
Billing Guidelines for CPT Code 99308
Proper billing ensures maximized reimbursement and compliance:
Only for Subsequent Visits: 99308 is strictly for follow-up nursing facility care, not initial evaluations.
Bill One Visit per Day: Multiple encounters for the same patient on the same day cannot be billed multiple times.
Ensure Accurate Place of Service (POS): Only bill for skilled nursing facilities or nursing homes, not hospitals or outpatient clinics.
Meet Documentation Requirements: Expanded problem-focused history & exam, low-level MDM, and face-to-face time must all be recorded.
Following these guidelines minimizes claim denials and supports audit readiness.
CPT Code 99308 Reimbursement & Payment Rates
While reimbursement varies by payer and location, Medicare and commercial payers typically cover CPT 99308 for subsequent visits. Key points:
Medicare Reimbursement: Varies by region; average ranges around $80–$110 per visit.
Factors Influencing Payment:
- Place of service
- Complete documentation
- Correct use of modifiers
Commercial Payers: Check individual contracts, as rates may differ from Medicare.
Accurate coding and documentation directly impact your revenue cycle efficiency.
Common Billing Errors to Avoid with CPT 99308
Avoid these mistakes to prevent claim denials or audits:
- Billing without time documentation
- Using CPT 99308 for initial visits
- Upcoding to a higher complexity code (e.g., 99309) without justification
- Failing to append modifier 25 when required
- Billing multiple visits per day
A small oversight in documentation or billing can delay reimbursement; attention to detail is critical.
Final Thoughts
CPT 99308 is a vital code for nursing facility care providers, ensuring patients receive consistent follow-up while allowing accurate and compliant billing. By understanding the time requirements, documentation standards, applicable scenarios, and billing guidelines, you can maximize reimbursement and minimize errors.
Whether managing chronic conditions, post-surgical recovery, or post-hospitalization follow-ups, CPT 99308 simplifies subsequent patient care and keeps your revenue cycle smooth.
FAQs
Q1. What is CPT code 99308 used for?
Ans: It’s used for subsequent nursing facility visits of at least 20 minutes for patients with moderate complexity conditions.
Q2. How many minutes are required for CPT 99308?
Ans: Minimum 20 minutes of face-to-face evaluation.
Q3. Can CPT 99308 be billed multiple times per day?
Ans: No, only one visit per patient per day is billable.
Q4. What level of medical decision-making is required?
Ans: Low complexity; must meet 2 of 3 criteria (limited management options, limited data, low risk).
Q5. Can nurse practitioners bill CPT 99308?
Ans: Yes, if within their scope of practice and documentation requirements are met.
Q6. Is CPT 99308 only for nursing homes or skilled nursing facilities?
Ans: Yes, this code cannot be used in hospital or outpatient settings.
