CPT Code 99213: Documentation, Time, and 2026 Reimbursement

What Is CPT Code 99213?

CPT code 99213 is the Level 3 evaluation and management (E/M) code for an established patient office or outpatient visit that requires either low complexity medical decision making or 20 to 29 minutes of total time on the date of the encounter. It is the most frequently billed E/M code in primary care, so coding it correctly is one of the biggest levers on a family medicine practice’s revenue.

• Time or MDM, not both: You can select 99213 by total time of 20 to 29 minutes or by low complexity medical decision making. Only one pathway has to be met.
• 2026 reimbursement: Medicare pays roughly 92 to 95 dollars for 99213 in a non-facility office setting nationally, before geographic adjustment.
• The 99214 trap: Defaulting to 99213 when the visit supports 99214 forfeits about 45 dollars per claim, and it is the most common coding leak we see in family medicine.

What CPT 99213 Covers

CPT 99213 reports an office or other outpatient visit for an established patient, meaning someone the provider, or another provider of the same specialty in the same group, has seen within the past three years. In billing shorthand it is the Level 3 code in the established patient family that runs from 99211 through 99215. It sits one step above 99212, which covers straightforward, self-limited problems, and one step below 99214, which covers moderate complexity.

The code is the workhorse of primary care. It fits the routine follow-up for a stable chronic condition, the recheck on a controlled problem, or a minor acute complaint that does not rise to moderate complexity. A patient returning for management of stable type 2 diabetes, well-controlled hypertension, or a straightforward medication recheck is the classic 99213 encounter.

Under the American Medical Association’s 2021 E/M guidelines, history and exam no longer drive the code level. Those elements still get documented for clinical reasons, but code selection now rests on either medical decision making or total time. That change matters for family medicine, where a thorough note used to feel like it justified a higher code. Today the note has to show the decision making or the time, not just the detail. In our experience matching family medicine practices with billing partners, this is the single most misunderstood part of established patient coding.

How Do You Bill 99213: Time or MDM?

You bill 99213 using one of two pathways: total time or medical decision making. Choose time when you spend 20 to 29 minutes on the patient’s care on the date of the encounter, or choose MDM when the visit involves low complexity decision making. You only need to satisfy one, and you pick whichever the visit supports.

Low complexity MDM is met when two of three elements line up: a limited number of problems, a limited amount of data reviewed, and a low risk of complications. The time pathway counts total provider time on the date of service, both face-to-face and the work around the visit. When you code by time, the note must state the total time.

These activities count toward total time on the encounter date:

• Reviewing the patient’s history and prior notes before the visit.
• Performing the face-to-face examination and counseling.
• Ordering medications, tests, or procedures during the encounter.
• Documenting the clinical note in the record on the same day.
• Reviewing results and interpreting data tied to that visit.
• Coordinating care with other providers or staff on the date of service.

99213 vs 99214: The Money Line

This is where established patient revenue is won or lost. The line between 99213 and 99214 is the difference between low and moderate medical decision making, or between the 20 to 29 minute band and the 30 to 39 minute band. Get it wrong in the safe direction and the money leaves quietly.

Across the billing companies we vet, the most common pattern is not upcoding. It is chronic undercoding: providers who default to 99213 because it feels audit proof, even when the visit clearly supported 99214. At the 2026 national average non-facility Medicare rate, that habit gives up roughly 45 dollars on every misclassified claim. A provider who does that ten times a week loses well over 20,000 dollars a year that the documentation would have supported.

The reverse error, billing 99214 on a visit that only supports 99213, invites audit exposure and recoupment. The goal is not to code higher. It is to code accurately, every time, so the level matches the work.

Code	Total time	MDM level	Approx. 2026 non-facility Medicare
99212	10 to 19 min	Straightforward	About $58
99213	20 to 29 min	Low	About $93
99214	30 to 39 min	Moderate	About $138
99215	40 to 54 min	High	About $193

Approximate national averages under the 2026 CMS Physician Fee Schedule, non-facility setting, before geographic adjustment. Verify current rates with your MAC.

How Much Does Medicare Pay for 99213 in 2026?

Medicare pays roughly 92 to 95 dollars for CPT 99213 in a non-facility office setting in 2026, based on the national average before geographic adjustment. The exact amount depends on your locality and your Alternative Payment Model status, because for the first time CMS is using two conversion factors in 2026.

The work RVU for 99213 stays at 1.30 everywhere, with total RVUs of roughly 2.75 to 2.85 in the non-facility setting. Under the 2026 CMS Physician Fee Schedule, the conversion factor is 33.57 dollars for qualifying Alternative Payment Model participants and 33.40 dollars for everyone else, the first year Medicare has run two separate factors. Your actual payment is then adjusted by the Geographic Practice Cost Index, so the same 99213 pays more in a high-cost metro than in a rural market.

Commercial payers set their own rates independent of Medicare, and Medicare Advantage plans typically pay near, though not exactly at, traditional Medicare levels. Always verify the figure against your own contracts and your MAC’s locality-specific fee schedule before you rely on it for budgeting.

Modifier 25 and Telehealth

Modifier 25 comes up constantly in family medicine because so many visits pair an E/M service with a minor procedure on the same day, for example a 99213 plus a joint injection or a skin lesion removal. Modifier 25 tells the payer the E/M was a significant, separately identifiable service beyond the procedure itself. It is legitimate and often necessary, but it is also heavily audited, so the documentation has to clearly stand on its own. Our deeper walk-through of when the modifier applies lives in our guide to modifier 25 in family medicine.

Telehealth still supports 99213 in 2026 as long as the visit meets the same MDM or time requirement as an in-person encounter. Append modifier 95 for a synchronous audio-video visit, and use the correct place of service: 10 when the patient is at home and 02 when the patient is elsewhere. Modifier 93 covers audio-only where the payer permits it, though Medicare has historically not paid audio-only E/M for established office visits, so confirm your MAC’s current policy before billing that way.

Common 99213 Mistakes in Family Medicine

Every family medicine practice runs into the same handful of 99213 problems. Treating them as process fixes rather than one-off slips is what separates the practices that get paid fully from the ones that leak revenue.

• Undercoding out of caution. Defaulting to 99213 when the visit supported 99214 is the most expensive habit in the established patient series.
• Failing to document time. If you code by time, the note has to state the total time spent on the date of the encounter.
• Cloning notes. Copied-forward documentation that does not reflect the current visit is a top audit trigger.
• Misjudging established status. Billing a new patient code for an established patient, or the reverse, changes the code family entirely.
• Stacking modifier 25 without support. Appending modifier 25 to every same-day E/M invites denials and recoupment.
• Ignoring the MDM pathway. Coding only by time when the decision making would have supported the level leaves accuracy on the table.

One question we hear constantly from practice managers is why their E/M mix skews so heavily toward 99213 compared with peers. The answer is almost always a documentation habit, not the actual complexity of the patients.

In-House vs Outsourced Coding

Whether to keep E/M coding in house or hand it to a billing partner comes down to volume, staffing, and how much revenue is currently leaking at the 99213 to 99214 line. A single-provider practice with a disciplined coder may do fine internally. A growing family medicine group seeing high established patient volume, juggling several payers with different E/M policies, often finds that a specialized partner recovers more than the service costs by correcting the code mix alone.

The honest test is whether your practice can say, with confidence, how many 99214-level visits got billed as 99213 last quarter. If you cannot, that uncertainty is the gap a billing partner is built to close. Providers often come to us after months of flat collections with no obvious cause, and the E/M mix is one of the first things a good partner audits. For a practical starting point on evaluating partners, see our guide on how to find the right family medicine billing service.

Frequently Asked Questions