Let’s be real. The 99213 CPT code shows up on more claims than almost any other office visit code, so even a tiny mistake gets expensive fast. I have spent over ten years writing for medical billing teams and practice managers, and the same pattern keeps showing up. Practices lose money on 99213 because of small habits, not big scandals. A missing time note here, a sloppy modifier there, and the payer denies or downcodes the claim.
This guide breaks down everything you need to know about the 99213 CPT code in 2026. You will get the meaning, the time and MDM rules, current reimbursement, related codes, and seven billing rules that keep your claims clean. Whether you run a solo clinic or manage a billing team, you can use this as a working checklist.
What Is the 99213 CPT Code? (Meaning)
The 99213 CPT code describes an office or other outpatient visit for an established patient. It requires a medically appropriate history and exam, plus either low medical decision making or at least 20 total minutes of provider time on the date of the encounter. In plain terms, it is the level 3 follow-up visit.
Who Counts as an Established Patient?
An established patient is someone who received professional services from you, or from another provider in the same specialty and group, within the past three years. If the patient does not meet that rule, you use a new patient code instead, such as 99203.
Who Can Bill It?
Physicians, nurse practitioners, and physician assistants can all bill the 99213 CPT code. Payers, however, handle “incident to” and split visit rules differently, so check each contract before you assume anything.
Two Ways to Qualify: Time or MDM
You can pick the visit level by total time or by medical decision making. Choose whichever path supports the work you actually did.
The Time Path
Since the 2021 office visit overhaul, and the 2024 wording cleanup, the times in CPT are minimums. For 99213, you must meet or exceed 20 minutes of total time on the date of the encounter. That includes more than face-to-face time. You can count:
- Reviewing records and test results before or after the visit
- Taking the history and doing the exam
- Counseling the patient or caregiver
- Ordering tests, prescriptions, or referrals
- Documenting in the chart
- Coordinating care with other providers
You cannot count time spent by clinical staff, and you cannot count time for a separately billed service.
The MDM Path
Medical decision making has three parts, and you need two of the three to hit the level. For 99213, the level is low.
Problems: Two or more self-limited or minor problems, one stable chronic illness, or one acute uncomplicated illness or injury.
Data: Limited. That means either two items from the group of reviewing outside notes, reviewing each unique test result, and ordering each unique test, or the use of an independent historian.
Risk: Low risk of complications, such as over-the-counter drugs, physical therapy orders, or minor procedures without risk factors.
This is why CPT code 99213 medical decision making is so important to document clearly. If your note shows a stable problem and a low-risk plan, the level holds up in an audit.
Common Patient Presentations That Fit 99213 (The “Symptoms” Section)
Because 99213 is a billing code, it does not have symptoms of its own. What it does have is typical clinical scenarios. Here are the visits that usually land at this level:
- A patient with well-controlled type 2 diabetes who comes in for a routine follow-up
- Someone with stable hypertension who needs a blood pressure check and a refill
- A patient with an uncomplicated sinus infection, sore throat, or urinary symptoms
- A follow-up for mild asthma with no recent flare-ups
- A rash or minor skin complaint with a simple treatment plan
- A stable anxiety or depression follow-up with no medication change
Notice the theme. The problem is stable or uncomplicated, and the plan is simple. When the patient is worse, or when you change prescription drug therapy for a chronic condition, the visit often moves up to 99214.
What Causes 99213 Claim Denials? (The “Causes” Section)
Denials do not happen at random. Most of them trace back to a handful of root causes:
- Weak documentation. The note does not support low MDM or 20 minutes.
- Missing modifiers. You billed a procedure and a visit on the same day without modifier 25.
- Wrong patient status. You billed an established code for someone who is actually new.
- Diagnosis mismatch. The ICD-10 code does not support medical necessity.
- Bundling edits. The payer views the visit as part of another service.
- Timely filing. You submitted the claim after the payer’s deadline.
Fix these six issues, and you will clear most of your 99213 problems before they start.
99213 Reimbursement in 2026
Let’s talk money. For 2026, the Medicare national payment for the 99213 CPT code in a non-facility office setting lands at roughly $95, while the facility rate sits in the high $50s. Your exact rate depends on your locality, because Medicare adjusts payment using geographic cost indexes. Some localities pay closer to $90, and others pay more.
The 2026 conversion factor also changed, and it differs based on whether you participate in a qualifying alternative payment model. That is why two practices in the same city can see slightly different numbers.
| Setting | Approximate 2026 Medicare Payment |
|---|---|
| Non-facility (private office) | About $95 |
| Facility (hospital outpatient) | About $57 |
| Commercial payers | Often 100% to 150% of Medicare, based on contract |
Two quick notes. First, pull your own rate from the current Medicare fee schedule lookup for your locality, because online averages vary. Second, if your commercial contract still uses 2025 rates, you may be getting underpaid on every 2026 claim. Compare your remittances against your contract every quarter.
99213 vs 99214: Where Practices Leave Money on the Table
The 99213 vs 99214 decision causes more headaches than any other choice in E/M coding. Here is a simple side-by-side.
| Factor | 99213 | 99214 |
|---|---|---|
| MDM level | Low | Moderate |
| Minimum total time | 20 minutes | 30 minutes |
| Typical problem | Stable chronic illness or acute uncomplicated problem | Chronic illness with exacerbation, or multiple chronic conditions |
| Typical risk | Over-the-counter drugs, minor procedures | Prescription drug management |
The biggest trigger for 99214 is prescription drug management. If you make a real decision about a prescription, such as continuing, adjusting, or stopping it, and you document your reasoning, that can support moderate risk. Many providers undercode because they play it safe. However, undercoding is not “safe.” It costs you real revenue and can even flag you in a pattern review.
On the flip side, do not upcode. If the visit was simple, bill 99213 and move on.
The 7 Billing Rules That Prevent Denials
Here is the heart of this guide. Follow these seven rules, and your 99213 claims will hold up.
Rule 1: Document the Reason for Your Level
Do not just write the code. Write the story. State the problem, what you reviewed, and what you decided. Even two clear sentences on your thinking can protect the claim in an audit.
Rule 2: Record Total Time When You Bill by Time
If you choose the time path, write the total minutes and list the activities. A line like “Total time on date of encounter: 24 minutes, including chart review, exam, counseling, and documentation” works well. Vague notes such as “spent extra time” will not survive a review.
Rule 3: Use Modifier 25 Correctly
Modifier 25 tells the payer that the visit was significant and separately identifiable from a procedure you performed the same day. Use 99213 with modifier 25 only when you truly did extra work beyond the pre-procedure evaluation. For example, a patient comes in for a blood pressure follow-up, and you also perform a minor skin procedure for a new lesion. Those are two distinct services, so the modifier fits.
Do not slap modifier 25 on every claim. Payers watch for that pattern.
Rule 4: Understand G2211 and Other Add-Ons
The G2211 add-on code covers the extra complexity of ongoing, longitudinal care, such as when you serve as the patient’s continuing focal point for care. Medicare pays about $16 for it in the office setting. Since 2025, Medicare also allows G2211 when modifier 25 is on the visit and the same day includes an annual wellness visit, a vaccine, or certain preventive services. Check payer rules before you rely on it, because commercial plans vary.
You may also see 99213 paired with 99406 for tobacco cessation counseling or 96127 for brief emotional or behavioral screening. Each one needs its own documentation and, usually, modifier 25 on the visit.
Rule 5: Get Telehealth Billing Right
The 99213 CPT code works for telehealth when the visit meets the same time or MDM rules as an in-person visit. Use the correct place of service and modifier that each payer requires, since modifier 95 is common with commercial plans while Medicare has its own rules. Telehealth policies have shifted repeatedly in recent years, so confirm current Medicare and payer rules before you bill. Always document the patient’s location and that the visit used real-time audio and video where required.
Rule 6: Match the Diagnosis to the Service
Your ICD-10 codes must support medical necessity. If you bill 99213 for diabetes follow-up, list the diabetes code and any relevant complications. Put the main reason for the visit first. When the diagnosis looks unrelated to the work you describe, the payer will question it.
Rule 7: Audit Yourself Every Quarter
Pull 10 to 20 charts per provider each quarter. Check whether the level matches the note. Look for patterns like a provider who bills 99213 for nearly every visit, or one who bills 99214 for almost everything. Internal audits catch problems while they are still cheap to fix.
Related Codes You Should Know
| Code | What It Covers |
|---|---|
| 99211 | Minimal visit, no time requirement, often nurse-led |
| 99212 | Straightforward MDM, 10 minutes |
| 99213 | Low MDM, 20 minutes |
| 99214 | Moderate MDM, 30 minutes |
| 99215 | High MDM, 40 minutes |
| 99203 | New patient, low MDM, 30 minutes |
| 99395 | Preventive visit, established patient, ages 18 to 39 |
| G2211 | Add-on for longitudinal care |
| 99417 | Prolonged service, but it applies to 99215, not 99213 |
One common trap deserves a mention. You cannot add prolonged service codes to 99213. If the visit runs long enough, the total time may justify a higher base code instead.
Also, a preventive visit and a problem visit on the same day can both be billed when the problem work is significant. In that case, you typically append modifier 25 to the problem visit.
Common Mistakes to Avoid
Even seasoned teams trip on these. Watch for them.
- Copy-paste notes. Cloned documentation raises red flags and weakens your audit position.
- Counting the wrong time. Staff time, and time spent on separately billed procedures, does not count.
- Ignoring the three-year rule. This one causes new versus established errors all the time.
- Overusing modifier 25. Use it only when the extra work is real.
- Skipping the payer policy. Every contract has quirks, so read yours.
- Downcoding out of fear. Undercoding is a compliance risk and a revenue leak.
- Forgetting to update fee schedules. Old rates in your system will underbill you all year.
Updates You Need to Know
Several changes shape how you bill the 99213 CPT code this year.
Higher office payment. The 2026 Medicare fee schedule raised non-facility payment for 99213 compared to 2025. The conversion factor rose, and there are now two versions based on alternative payment model participation.
Lower facility payment. Facility-based E/M payment shifted down, so hospital-employed providers may not see the same lift.
Efficiency adjustment. CMS applied a reduction to work values for many non-time-based services in 2026. Office E/M visit codes were excluded, which is good news for 99213.
Time wording stays firm. The 20-minute mark is a minimum. You must meet or exceed it.
Telehealth remains a moving target. Rules and flexibilities have changed often, so verify current status with Medicare and each commercial payer before you bill.
Audit pressure is up. Payers are using more automated review tools, so documentation quality matters more than ever. Clean notes with clear MDM or time support are your best defense.
Since rates and rules can change, always confirm figures on the current Medicare fee schedule before you finalize your billing policies.
Quick Documentation Example for 99213
Here is a sample note that supports low MDM:
“Patient returns for follow-up of stable hypertension. Blood pressure today is 128/82. Home readings reviewed and within goal. Reviewed recent basic metabolic panel, no changes. Continue current medication. Advised on low-sodium diet. Return in 3 months.”
This note shows one stable chronic problem, limited data review, and low risk. Together, they support the level.
Frequently Asked Questions
What is the 99213 CPT code used for?
It covers an established patient office visit with low medical decision making or at least 20 minutes of total provider time on the date of service.
How many minutes do you need for 99213?
You need 20 minutes or more. The time counts as a minimum, and it includes all provider activities tied to the patient on that date.
What is the Medicare reimbursement for 99213 in 2026?
The national non-facility payment is roughly $95, though your locality may pay more or less. Facility settings pay less, at roughly the high $50s.
Can you bill 99213 with a procedure?
Yes, but only when the visit is significant and separately identifiable. In that case, attach modifier 25 and document both services clearly.
Can you bill 99213 through telehealth?
Yes, when the visit meets the same time or MDM rules and the payer allows it. Use the right modifier and place of service, and confirm current policy first.
What is the difference between 99213 and 99214?
99213 reflects low MDM or 20 minutes. 99214 reflects moderate MDM or 30 minutes. Prescription drug management often tips a visit into 99214.
Is 99213 covered by Medicare?
Yes, Medicare covers it when the service is medically necessary and the documentation supports it.
Can a nurse practitioner bill 99213?
Yes. Nurse practitioners and physician assistants can bill it, and payer rules for incident-to billing may apply.
Final Thoughts
The 99213 CPT code looks simple, but it rewards teams that pay attention to the details. Document your thinking, count time the right way, use modifiers only when they fit, and audit yourself often. Do those things, and you will protect your revenue and stay on the right side of compliance.
