What Is CPT Code 99203?
CPT code 99203 is a level 3 evaluation and management code for a new patient office or outpatient visit. To bill it in 2026, the encounter must meet one of two bars on the date of service: 30 to 44 minutes of total provider time, or low-complexity medical decision making. It sits above the shorter 99202 and below the moderate-complexity 99204 in the new patient series.
Time or decision making, pick one. Bill by total time when the visit runs 30 to 44 minutes, or by medical decision making when problems, data, and risk meet the low-complexity bar. You never need both.
The three-year rule decides who is new. A patient is new only if no provider of the same specialty in your group billed them a face-to-face service in the past three years. Miss this and the claim is wrong before you reach the level.
The costly mistake is downcoding. Filing a 99203 for a visit that documented 99204 quietly gives up about 14 dollars per Medicare encounter, and more under commercial contracts.
What CPT Code 99203 Covers
CPT code 99203 reports an office or other outpatient visit for a new patient. To bill it, the encounter has to clear one of two bars on the date of service: 30 to 44 minutes of total provider time, or low-complexity medical decision making. Per the American Medical Association CPT 2026 code set, it is the middle of the new patient family, above the shorter 99202 and below the moderate-complexity 99204.
A new patient means someone a provider, or another provider of the same specialty in the same group, has not billed a face-to-face service to in the past three years. That definition drives more denials than the code itself, and we come back to it below. If the visit is with a returning patient, you are looking at CPT code 99213 for established patients instead.
Why History and Exam No Longer Set the Level
Before 2021, the level hinged on how much history you took and how thorough the exam was. That is gone. Since the 2021 E/M overhaul, still in effect for 2026, only two things set the level for 99202 through 99205: total time or medical decision making. You still perform and document a medically appropriate history and exam, but they no longer move the code up or down. Practices that still code off the old comprehensive-history logic routinely land on the wrong level.
The Two Ways to Bill 99203
The single biggest source of confusion we see with new patient coding is teams trying to satisfy time and decision making at once. Pick the pathway that reflects the visit, then document to that standard.
Billing by Total Time (30 to 44 Minutes)
Total time is every minute the billing provider spends on the encounter on the date of service, not just face-to-face minutes. That includes chart review before the visit, the visit itself, ordering tests, documentation, and same-day care coordination. Only physician, nurse practitioner, or physician assistant time counts. Medical assistant, RN, and front-desk time does not. The audit-proof move is to write the time into the note as a sentence, not just a field a payer may never read. Something like: total provider time on the date of service was 33 minutes, including chart review, exam, and documentation. That one line settles most time-based 99203 disputes.
Billing by Low-Complexity Medical Decision Making
If you code by decision making instead, the visit has to meet low complexity across the three AMA elements: a low number and low complexity of problems, such as a single acute uncomplicated illness or one stable chronic condition; a limited amount of data reviewed; and low risk from the diagnostics or treatment. Controlled hypertension in an otherwise healthy new patient, or lifestyle-related fatigue that needs basic labs, is the classic 99203-by-decision-making picture. Push into moderate risk, such as starting a prescription drug, or into more data, and you are into 99204 territory.
Who Counts as a New Patient?
A patient is new only if no provider of the same specialty in the same group practice has billed them a face-to-face service within the past three years. If any same-specialty colleague in your group saw them inside that window, the visit is established, not new, and 99203 does not apply.
This trips up family medicine constantly, because new patient volume is high and group structures blur the line. If a patient saw one of your family physicians two years ago, a visit with a different family physician in the same group is established, not new. The specialty and group test is what matters, not whether this particular provider has met the patient. In our experience matching family practices with billing partners, miscounting new versus established status is one of the most common upstream errors we see, and it makes the claim wrong before the level question is even reached. Verify patient status in the practice management system before anyone selects a code.
What 99203 Pays in 2026
The work RVU for 99203 is 1.60, and the total non-facility RVU is about 3.13. Applying the 2026 Medicare non-QP conversion factor of $33.4009, the national non-facility payment lands near $105, with facility settings closer to $70. Commercial payers commonly reimburse 120 to 170 percent of Medicare, which puts a typical 99203 allowed amount between $125 and $180. Those are the posted numbers, and they can shift under upcoming Medicare rules, which we cover in the 2027 Medicare payment changes for family medicine.
| Code | Total Time | MDM Level | Work RVU | 2026 Medicare (non-facility) |
|---|---|---|---|---|
| 99202 | 15 to 29 min | Straightforward | 0.93 | ~$74 |
| 99203 | 30 to 44 min | Low | 1.60 | ~$105 |
| 99204 | 45 to 59 min | Moderate | 2.60 | ~$119 |
The 99203-to-99204 Downcoding Gap
The figure that actually moves your bottom line is the one nobody bills: the gap between the 99203 you filed and the 99204 you could have documented. On 2026 Medicare that gap is about $14 per encounter, since 99204 pays roughly $119 against a 99203’s $105. It is wider under commercial contracts that pay 120 to 170 percent of Medicare, where the same one-level slip can be $20 to $40. For a practice seeing 15 new patients a week, defaulting to 99203 out of documentation uncertainty when the visit earned 99204 quietly bleeds roughly $11,000 a year on Medicare alone, and more across commercial payers. It never shows up on a denial report, because the claim was paid. It was just paid short. The fix is not aggressive coding. It is documentation discipline that lets a legitimate 99204 stand.
Not sure whether your new patient visits are coded to what you actually documented? A vetted family medicine billing company can run a new patient coding review and show you where the revenue is leaking. Get matched with pre-screened billing partners in about 30 minutes, free to providers.
Documentation That Survives an Audit
Upcoding a 99203 to 99204 without documented moderate decision making is a known audit trigger, so the goal is a note that ties cleanly to whichever pathway you chose. If you billed by time, state the total minutes and what they covered. If you billed by decision making, spell out the problems addressed, the data you reviewed, and the risk level. Do not mix the two standards in one note. Consistency across your charts matters as much as any single visit. A provider who bills 99203 for encounters that clearly ran long, or clearly carried moderate risk such as starting a new prescription, invites a pattern review.
The most reliable protection is a note whose narrative would let an outside reviewer arrive at the same code you billed without needing to call you. Across the billing companies we vet, the strongest E/M performers train providers to document the complexity at the point of care, so the coder can support the level without guessing. For the established patient counterpart of this same decision, the logic carries straight over to CPT code 99214.
Common Family Medicine Mistakes With 99203
Across the practices we help match to billing partners, the same errors show up on new patient claims. None of them are coding-knowledge gaps. They are workflow gaps, and they are exactly what a specialized billing partner is built to catch before the claim goes out.
- Coding a same-group, same-specialty established patient as new, which fails the three-year rule.
- Defaulting to 99203 out of documentation uncertainty when the visit actually earned 99204.
- Counting medical assistant or front-desk time toward the 30 to 44 minute time threshold.
- Leaving the total-time statement out of the note when billing by time.
- Mixing the time and decision-making standards in a single note.
- Skipping the patient-status check in the practice management system before code selection.
Frequently Asked Questions
Is 99203 billed by time or by medical decision making?
Either. Bill by total time when the encounter runs 30 to 44 minutes on the date of service, or by low-complexity medical decision making when the problems, data, and risk support it. You choose whichever pathway the documentation reflects, and you never have to satisfy both.
How much does Medicare pay for 99203 in 2026?
The 2026 national Medicare non-facility payment for 99203 is about $105, based on a total RVU near 3.13 and the non-QP conversion factor of $33.4009. Facility settings pay closer to $70, and commercial payers often reimburse 120 to 170 percent of Medicare.
What is the difference between 99203 and 99204?
Both are new patient codes. 99203 needs low-complexity decision making or 30 to 44 minutes. 99204 needs moderate complexity or 45 to 59 minutes, often triggered by starting a prescription. On 2026 Medicare, 99204 pays roughly $14 more per visit.
Does 99203 need modifier 25?
Only when you perform a separately identifiable E/M service on the same day as a minor procedure. If you evaluate a new patient and also do a procedure that day, modifier 25 on the E/M keeps the two services from bundling into one payment.
Can 99203 be billed for telehealth?
Yes, when the payer allows it and the visit meets the same time or decision-making standard. Append the payer’s required telehealth modifier and place of service, and document the time or the decision making exactly as you would for an in-person visit.
What happens if I undercode a 99203?
You still get paid, which is what makes undercoding dangerous. The claim clears, nothing flags, and the practice absorbs a silent loss on every visit that should have been 99204. Over a year of new patient volume that becomes real money, and only a coding review surfaces it.
Family medicine runs on new patient volume, and every miscoded 99203 is margin you already earned but did not collect. Family Med Billers connects your practice with vetted, specialty-experienced billing companies across all 50 states, with rates starting as low as 2.95 percent and a match in about 30 minutes. Getting matched is free to providers.
