CPT Code 99417: Prolonged Outpatient E/M Services Billing Guide for 2026

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CPT code 99417 is an add-on code for prolonged outpatient evaluation and management services. It is reported in 15-minute increments when a provider spends time beyond the required duration of a level 5 office visit (99205 for new patients or 99215 for established patients) and the primary visit was selected based on total time, not medical decision making. Medicare does not recognize 99417 and requires G2212 instead, which means practices billing both Medicare and commercial payers must run two different prolonged services rules simultaneously.

• Add-on only: 99417 cannot be billed alone. It must accompany a time-based 99205 or 99215 and is reported for each additional 15-minute increment beyond the minimum required time of the primary code.
• Medicare uses G2212 instead: CMS created G2212 in 2021 because it disagreed with how 99417 defines the time threshold. The two codes describe nearly the same service but become reportable at different minute marks, which is the single biggest source of prolonged services claim errors.
• Why it matters: Practices that see complex patients routinely exceed level 5 visit times without billing for the additional time because their coders are unsure which prolonged code applies or how to document it. That uncaptured time is billable revenue that disappears every day.

What CPT Code 99417 Covers

CPT code 99417 captures prolonged outpatient evaluation and management services. According to the American Medical Association, the code describes time spent with or without direct patient contact beyond the required time of the primary service, when that primary service has been selected using total time. It is billed in 15-minute increments and is listed separately in addition to 99205 or 99215 for office or other outpatient E/M services.

The work that qualifies for 99417 includes the same activities that count toward total time on the primary E/M code: obtaining or reviewing history, performing the examination, counseling and education, ordering and reviewing tests, coordinating care, prescribing medications, and documenting the encounter. What makes it “prolonged” is that the total time spent on the encounter exceeds the time threshold built into the level 5 code.

This code was introduced as part of the 2021 E/M restructuring that overhauled how office visits are coded and documented. Before 2021, prolonged outpatient services were reported using 99354 and 99355, which have since been deleted. The 99417 replacement simplified the structure by tying prolonged time directly to the level 5 visit codes rather than requiring a separate prolonged services calculation.

One question we hear constantly from practice managers is whether 99417 can be paired with a 99213 or 99214. It cannot. The code is only reportable with a level 5 visit, and only when that visit was selected based on total time. If the provider chose the E/M level using medical decision making instead of time, 99417 does not apply, regardless of how long the encounter lasted.

How 99417 Time Thresholds Work

The time calculation for 99417 is where most billing errors originate, because the AMA and CMS define the starting point differently. Understanding both is essential for any practice that bills commercial payers and Medicare.

CPT (AMA) rule for 99417: The prolonged time begins beyond the minimum required time of the primary code. For 99205, the minimum time threshold is 60 minutes. For 99215, the minimum time threshold is 40 minutes. Once the provider exceeds those minimums by at least 15 minutes, the first unit of 99417 is reportable. Each subsequent 15-minute increment earns an additional unit.

Here is how the time adds up for established patient visits billed with 99215:

And for new patient visits billed with 99205:

The critical detail is that CPT counts the first unit of 99417 as beginning beyond the minimum time of the primary code, not beyond the maximum. That distinction is the root of the disagreement between CMS and the AMA, and it is exactly why G2212 exists as a separate code for Medicare.

Across the billing companies we vet, the ones that consistently capture prolonged services revenue have a hard rule in their workflow: when total encounter time exceeds 54 minutes for an established patient or 74 minutes for a new patient, the coder checks whether prolonged time applies. Practices without that checkpoint leave billable time on the table on every complex visit.

What Is the Difference Between 99417 and G2212?

This is the single most confusing coding distinction in outpatient E/M, and getting it wrong produces either a Medicare denial or an underbilled commercial claim. Both codes describe prolonged outpatient E/M services in 15-minute increments, but they start the clock at different points.

CPT 99417, the AMA code, becomes reportable beyond the minimum required time of the primary code. For an established patient visit coded as 99215, the minimum time is 40 minutes. Under CPT rules, the first unit of 99417 is reportable at 55 minutes (40 plus 15).

HCPCS G2212, the CMS/Medicare code, becomes reportable beyond the maximum time of the primary code, plus 15 minutes. CMS treats the entire time range of 99215 (40 to 54 minutes) as part of the base visit. The first unit of G2212 is not reportable until 69 minutes (54 plus 15), and any part of a 15-minute increment does not count. The full 15 minutes must be completed.

Here is a side-by-side comparison for established patient visits paired with 99215:

The practical impact is this: a practice billing 99417 to Medicare will get denied. A practice billing G2212 to a commercial payer that follows CPT rules may get denied or underpaid. The billing system must route the correct code to the correct payer, and the documentation must support both calculations because the same encounter may generate different prolonged services counts depending on which payer is being billed.

The biggest issue we see providers run into is using a single prolonged code for all payers. In our experience matching providers with billing partners, the billing companies that handle prolonged services well maintain payer-specific code mapping so 99417 routes to commercial plans and G2212 routes to Medicare automatically.

99417 Documentation Requirements

The documentation requirements for 99417 are straightforward in concept but frequently missed in practice. Because 99417 is only reportable when the primary visit is selected based on time, the note must contain a clear and specific total time statement.

The time statement should include the total number of minutes spent on the encounter on the date of service. It does not need a minute-by-minute log, but it must be detailed enough that an auditor can verify the total is plausible given the services described. Best practice is to state the total time and then summarize the categories of work performed: reviewing records, performing the examination, counseling, coordinating care, prescribing, and documenting.

The note must also make clear that the primary E/M code was selected based on total time rather than medical decision making. If the note does not indicate the basis for code selection, an auditor may default to MDM and deny the 99417 entirely, because the prolonged code is only valid under time-based coding.

Providers often come to us after receiving a denial on 99417 and discovering the problem is not the time statement itself but the absence of any indication that time was the basis for code selection. A note that documents 70 minutes of total time and supports high complexity MDM will get paid on the 99215, but the 99417 add-on will be denied if nothing in the note says the E/M level was chosen by time.

How Much Does 99417 Pay?

CMS does not assign a Medicare reimbursement rate to CPT code 99417 because Medicare does not recognize this code. For Medicare patients, the equivalent service is billed using HCPCS code G2212, which reimburses at approximately $33 per 15-minute unit under the 2026 Medicare Physician Fee Schedule.

For commercial payers, reimbursement for 99417 varies widely by payer and contract. Based on published payer data, average commercial rates for 99417 range from approximately $29 to $89 per 15-minute unit, with national averages near $38 for major payers like Blue Cross Blue Shield and UnitedHealthcare. The actual rate depends on the provider contract, the geographic market, and whether the payer follows CPT or CMS time thresholds.

For context, the primary codes that 99417 pairs with reimburse at substantially higher rates. The 2026 national Medicare non-facility rate for 99215 is approximately $192.39, and for 99205 it is approximately $236.81. Each unit of prolonged time adds incremental revenue on top of those base payments. For more on how these level 5 E/M codes work, see our guides on CPT code 99214 billing guidelines, which covers the code just below the 99417 threshold.

The revenue impact compounds quickly. A practice with five providers who each see two prolonged visits per day and fail to bill for the additional time is leaving approximately $380 to $660 per week in unbilled revenue, depending on payer mix. Over a year that represents $20,000 to $34,000 in lost collections from a single missed code.

Common 99417 Billing Mistakes and How to Avoid Them

• Billing 99417 to Medicare. Medicare does not recognize 99417. Claims submitted with this code to Medicare Part B will be denied. Use G2212 instead. Fix: configure payer-specific code routing in the billing system so 99417 maps to commercial plans and G2212 maps to Medicare automatically.
• Pairing 99417 with a code other than 99205 or 99215. 99417 is only reportable with a level 5 office or outpatient E/M code. It cannot be added to 99213, 99214, or any other E/M level. Fix: before adding 99417, confirm the primary code is 99205 or 99215 and that it was selected by time.
• Selecting the primary E/M code by MDM instead of time. 99417 is only valid when the primary visit was chosen using total time. If the note supports the level through MDM alone, the prolonged add-on does not apply even if the provider spent the time. Fix: if the visit ran long, check whether time-based coding produces a higher-level code and document accordingly.
• Missing the total time statement. The note documents extensive work but does not include a specific total time figure. Without it, the auditor cannot confirm the prolonged threshold was met. Fix: embed a total time field in the EHR template that the provider completes on every visit.
• Not distinguishing between CPT and CMS time thresholds. The practice applies CPT time thresholds to Medicare claims or CMS thresholds to commercial claims, resulting in either denials or underbilling. Fix: maintain a reference chart for each payer type and train coders on the difference between “beyond the minimum” (CPT) and “beyond the maximum plus 15” (CMS).

In our experience matching providers with billing partners, the practices that fix these five errors and start billing prolonged services consistently see an immediate revenue lift in their first full quarter, typically in the range of $15,000 to $40,000 annually per provider depending on specialty and case mix.

Which Specialties Bill 99417 Most Often?

Any specialty that routinely sees high-complexity patients with encounters running past 55 minutes (established) or 75 minutes (new) has a reason to bill 99417. In practice, the specialties that use it most frequently include primary care (especially complex chronic disease management visits), psychiatry, neurology, rheumatology, endocrinology, and oncology.

Surgical specialties that perform same-day procedures alongside an E/M visit are less likely to use 99417, because those encounters are typically coded using procedural codes with separate modifier rules rather than extended E/M time.

Practices in behavioral health and psychiatry see some of the highest volumes of prolonged visits because initial psychiatric evaluations and medication management visits for patients with multiple conditions regularly exceed 60 minutes. Urgent care practices can also qualify when a complex presentation requires extended workup on the same day. For more on how emergency and urgent care visits are coded differently, see our guide on CPT code 99284 for emergency department visits.

99417 Billing Best Practices

Strong prolonged services billing follows the same operational habits regardless of specialty. These are the practices we look for when we vet the billing companies that providers get matched with.

• Build a time capture field into every EHR template. The total time statement is non-negotiable for 99417 billing. A field that prompts the provider to enter start time, end time, and total minutes on every visit ensures the data is there when the coder needs it.
• Set a workflow trigger at the prolonged threshold. When total encounter time hits 55 minutes for an established patient or 75 minutes for a new patient, the billing system should flag the visit for potential 99417 or G2212 review. Manual processes miss these consistently.
• Maintain separate prolonged code rules by payer type. 99417 for commercial. G2212 for Medicare. The billing system should route the correct code based on the patient insurance type without the coder having to decide.
• Audit prolonged services capture quarterly. Pull a report of all visits with documented time over 54 minutes and compare it against the count of 99417 and G2212 claims submitted. The gap between those numbers is your revenue leakage. For a broader view of where revenue leaks in the billing process, see our guide on the 10 steps in the medical billing process.
• Verify that 99417 is not being used on MDM-coded visits. Run a periodic check for claims where 99417 was submitted alongside a 99215 that was selected by MDM rather than time. Those claims will be denied on audit, and catching them proactively prevents recoupment.

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