CPT Code 99213: Complete Billing and Documentation Guide 2026

If one CPT code shows up in nearly every primary care and outpatient practice, it’s the 99213 CPT code. It’s the middle-of-the-road office visit code: not too simple, not too complex, and for many practices it’s the code they bill more than any other.

It’s also one of the codes that gets undercoded, overcoded, denied and audited more than almost anything else on the fee schedule.

Here’s the truth about 99213: most providers have a general sense of when to use it, but few have sat down to understand what the documentation should look like and what happens when it doesn’t. That gray area costs real money through downcoded claims, denied visits and, worse, audit exposure.

This guide from the medical billing services team at Med Bridge LLC gives you the full picture: the 99213 requirements, the documentation that supports them, how payment works and the mistakes to fix right away.

Quick answer: The 99213 CPT code describes an office or other outpatient visit for an established patient with low-complexity medical decision-making (MDM) or at least 20 minutes of total time on the date of the encounter. You only need one of the two to support it.

What Is the 99213 CPT Code?

The 99213 CPT code is an evaluation and management (E/M) code for an established patient seen in an office or other outpatient setting. It describes a low-complexity visit: the patient comes in with a manageable problem, you evaluate it, decide on a treatment plan and send the patient on their way.

Think of a follow-up for a controlled chronic condition, a sinus infection that needs assessment, a medication check for a stable patient, or an established patient with a minor acute complaint. That’s the typical range.

Whether your team calls it the procedure code 99213, the medical code 99213 or simply the billing code 99213, it’s the same service, and it sits in the middle of the established-patient E/M ladder:

Code 99211 sits just below this ladder. It’s the simplest visit and is often performed by clinical staff. At the other end, 99215 is reserved for visits that need substantial, high-complexity decision-making by the provider.

2026 Documentation Requirements for the 99213 CPT Code

This is where many practices get into trouble. Since the 2021 overhaul of the office E/M guidelines (written by the AMA and adopted by CMS), the rules for office visit coding have shifted significantly, and some providers are still documenting the old way without realizing it.

Under current guidelines, there are two ways to support the level of service for the 99213 CPT code: medical decision-making or total time. The old three-component scoring of history, exam and MDM no longer sets the level for office visits. A medically appropriate history and exam are still expected. They just don’t determine the code.

Option 1: Medical decision-making (MDM)

To support 99213 with MDM, your documentation must reflect low-complexity decision-making. That means meeting at least two of these three elements at the low level:

A patient with two or more stable chronic conditions, or one that isn’t well controlled, is usually pointing toward 99214. Prescription drug management is a classic example of moderate risk, so it can support 99214 when it’s paired with a second moderate element.

The key is documentation. It isn’t enough to have done the clinical work. The note has to show what you assessed, what you ordered or reviewed and what your plan was, in enough detail that someone reading it later can verify the level of complexity.

Option 2: Total time

Time-based coding looks simpler, but it trips up many practices. For the 99213 CPT code, current CPT language says 20 minutes of total time on the date of the encounter must be met or exceeded. (You’ll still see “20 to 29 minutes” in older guides. That was the earlier wording.)

Total time includes everything you personally do for that patient on that date: reviewing records before the visit, the visit itself, ordering tests, documenting and coordinating care.

It does not include time on other dates, time spent on a separately billable service, or clinical staff time you didn’t supervise or take part in.

If you bill by time, your note has to say how long it took and what that time covered. A vague line such as “30 minutes spent with the patient” won’t hold up. Try this instead:

Total time on the date of the encounter: 24 minutes, including review of prior labs, history and exam, counseling on medication adherence, ordering follow-up labs and documentation.

Which option should you use? Use MDM when the clinical complexity is clear. Use time when counseling or coordination took most of the visit. Choose whichever your note supports best, never whichever pays more.

CPT 99213 vs 99214: Which One Should You Bill?

For many practices, this is the everyday question. Plenty of physicians bill 99213 when their clinical work actually supports 99214. Use this simple test:

• Likely 99213: one well-controlled condition, a routine check, a medication is working, and there’s nothing new to worry about.
• Likely 99214: two or more chronic conditions, one condition that isn’t well controlled, or a new problem that needs meaningful clinical judgment to evaluate and manage.

The common mistake is defaulting to 99213 out of habit or caution, even when the note clearly supports more. That’s undercoding, and it’s as much a compliance issue as overcoding. You aren’t accurately reporting the work you did, and you leave money on the table every time.

Med Bridge LLC tip: Pull 30 recent 99213 claims and compare each note with the MDM table above. Mark each one as supporting 99212, 99213 or 99214. Most practices find the exercise eye-opening, and it shows exactly where documentation habits need work.

How Much Does the 99213 CPT Code Pay?

There is no single price. Medicare pays for the medical code 99213 under the Physician Fee Schedule, which combines relative value units, a geographic adjustment and a conversion factor that CMS updates each year. Commercial payers pay according to the rates in your contract, and those can differ a lot from one payer to the next.

That makes every claim for the medical billing code 99213 worth tracking. Pull the contracted allowable for 99213 and 99214 from your top five payers, then multiply the difference by the number of visits you coded one level too low. That’s the revenue at stake, and it’s why a good medical billing services partner reviews E/M levels instead of just submitting claims.

Common Denial Reasons for the 99213 CPT Code (and How to Fix Them)

Getting a 99213 denied is frustrating, especially when you know the visit happened and the work was done. Here are the most common causes and what to do about each.

1. The documentation doesn’t support the level billed. This is the most common E/M audit finding. The note is too thin to show the visit’s complexity. The fix is better documentation, not just resubmission. If you see this denial repeatedly, sit down with your billing team and review what the notes actually say.
2. Modifier 25 is missing when billed with a procedure. If you performed a procedure on the same day, such as an injection or a minor removal, and you bill both the E/M and the procedure, the E/M must be significant and separately identifiable and carry modifier 25. Without it, the payer bundles the visit into the procedure payment and you lose the office visit reimbursement. Missing modifier 25 turns a payable billing code 99213 into zero.
3. An established patient billed as new. It sounds obvious, but it happens often in practices with several locations or providers. A patient who has received professional services from you, or from a provider of the same specialty in your group, within the past three years is an established patient.
4. The wrong place of service. Payment and documentation expectations differ between an office visit (POS 11) and an on-campus outpatient hospital visit (POS 22). The wrong code is a quick path to a denial or an underpayment.
5. Frequency limits exceeded. Some payers limit how often certain E/M codes can be billed in a period. If patients come in often and you bill 99213 each time, expect some payers to review the claims. Make sure each note shows why the visit was medically necessary.

FAQs About the 99213 CPT Code

Can you bill 99213 for a telehealth visit in 2026?

Yes, when your payer covers the service. Real-time audio-video visits can be reported with 99213 plus the right place of service: POS 10 when the patient is at home and POS 02 when telehealth is delivered anywhere else. Many commercial payers also want modifier 95 for audio-video services, while Medicare’s modifier rules have changed over time, so check with your payer or MAC. Telehealth coverage has also been extended and changed repeatedly, so confirm the rules for the date of service.

How do 99213 and 99212 differ?

99212 is for straightforward decision-making, such as one self-limited or minor problem, or at least 10 minutes of total time. 99213 requires low-complexity MDM or at least 20 minutes. Many visits billed as 99212 actually meet the 99213 criteria, so it’s worth checking whether yours do.

Does the 99213 CPT code require a physical exam?

No. A physical exam is not a scored requirement for the level of service under the 2021 and later guidelines. A medically appropriate history and exam are still expected, though. If you performed an exam, document it. It supports your clinical note and gives context for your decision-making, and leaving out an exam you actually did is poor documentation either way.

Can a nurse practitioner or PA bill 99213?

Yes. Nurse practitioners and physician assistants who are credentialed and enrolled with payers can bill 99213 under their own NPI. Under Medicare’s “incident to” rules, a visit can also be billed under the supervising physician’s NPI in certain situations, but those requirements are specific and must be met carefully to avoid compliance problems.

Is 99213 a procedure code?

Billers often say procedure code 99213 because every service on a claim is reported with a CPT code. Technically, 99213 is an E/M code in the CPT code set. It describes a visit, not a procedure, which is why modifier 25 matters when a procedure is done on the same day.

Getting 99213 Right Is About Revenue, Not Just Compliance

The 99213 CPT code is probably one of the most common codes in your practice. Documenting it properly, billing it at the correct level, and catching denials before they age has a direct effect on your bottom line every month.

Most practices aren’t losing money on 99213 through fraud or intentional errors. They’re losing it through undercoding, denials nobody works, modifier 25 mistakes that quietly bundle away visit revenue, and notes that don’t support what was done clinically. Each medical billing code 99213 claim deserves that attention.

Professional medical billing services include accurate CPT 99213 coding, correct modifier use, insurance verification, claim submission, and denial management.

At Med Bridge LLC, we review E/M coding as part of every billing engagement. If you’re not sure your 99213 claims are coded and documented correctly, or you’re seeing a higher denial rate than you’d expect, we’d be glad to take a look. Request a free billing audit, and we’ll show you where the revenue is going.