CPT code 99203 reports a new patient office visit that involves low-complexity medical decision making, or 30 to 44 minutes of your time on the day of the encounter. It sits in the middle of the new patient evaluation and management ladder, which runs from 99202 up to 99205. Get the level right and the visit pays cleanly. Get it wrong and you either leave money on the table or hand a payer an easy reason to downcode. This guide walks through the descriptor, the decision making, the 2026 fee, the modifiers, and the mistakes that cost practices the most.
What is CPT code 99203?
CPT code 99203 describes an office or other outpatient visit for a new patient that requires a medically appropriate history and examination along with a low level of medical decision making. The American Medical Association defines the code by two independent paths: you select it either on medical decision making or on total time of 30 to 44 minutes. You do not need both, and history and exam no longer drive the code level the way they did before the 2021 evaluation and management overhaul.
The word that carries the most weight here is new. A patient qualifies as new only when they have not received a face-to-face professional service from you, or from another provider of the same exact specialty and subspecialty in your group, within the past three years. Miss that rule and the claim gets denied fast, because payers check it automatically. If the patient was seen inside that window, you drop to an established patient code such as the ones covered in our guide to CPT code 99213.
How the medical decision making works for 99203
Medical decision making, or MDM, drives most 99203 claims. To reach the low level, the visit has to satisfy at least two of these three elements at the low tier:
- Problems addressed. Two or more self-limited or minor problems, or one stable chronic illness, or one acute uncomplicated illness or injury.
- Data reviewed. A limited amount: ordering or reviewing a few tests, or pulling in one external note or an independent historian.
- Risk. Low risk of complications from the problem or the treatment, such as prescribing an over-the-counter remedy or a routine medication.
In short, you need two of the three to land at low, because one low element on its own does not carry the code. For example, picture a healthy 34 year old who comes in for a lingering cough and mild congestion. You take a focused history, examine the chest, order a basic test, and start a short course of medication. That combination of an acute uncomplicated problem, limited data, and low risk fits 99203 well.
What is the time range for CPT code 99203?
When you select the code on time instead of MDM, CPT code 99203 covers 30 to 44 minutes of total time on the date of the encounter. That total counts the work you personally do that day, not just the minutes in the room. It includes reviewing the chart before the visit, taking the history, performing the exam, ordering tests, documenting in the record, and coordinating care afterward. So if your total time lands at 45 minutes or more, you move up to 99204. However, if it falls below 30 minutes, you drop to 99202. Write the actual total time in the note whenever you bill on time, because a missing time statement is one of the quickest ways to lose a time-based claim.
99202 vs 99203 vs 99204 vs 99205: where level 3 sits
The four new patient codes step up by decision making and time. The table below shows how CPT code 99203 compares, with approximate 2026 national Medicare non-facility payments. Treat the dollar figures as a baseline, since your locality adjustment shifts the final number.
| Code | MDM level | Total time | 2026 Medicare (approx.) |
|---|---|---|---|
| 99202 | Straightforward | 15 to 29 min | ~$72 |
| 99203 | Low | 30 to 44 min | ~$105 |
| 99204 | Moderate | 45 to 59 min | ~$157 |
| 99205 | High | 60 to 74 min | ~$207 |
However, the most common error in this range is undercoding. For instance, providers who default to 99202 out of caution when the record actually supports 99203 give up roughly 33 dollars every visit. As a result, across a busy panel that gap adds up quickly. The established patient side of the E/M family follows the same MDM logic, so the reasoning you use here carries over to codes like CPT code 99214 and CPT code 99215.
CPT code 99203 reimbursement in 2026
For 2026, Medicare pays roughly 105 dollars for CPT code 99203 in the non-facility setting, based on the national conversion factor and the code’s relative value units. Your actual payment depends on the geographic practice cost index for your area, so a claim in a high-cost metro pays more than one in a rural county.
In addition, commercial payers usually reimburse above the Medicare rate, often in the range of 120 to 170 percent of the fee schedule depending on the contract. Medicaid, on the other hand, tends to pay less and varies widely by state. Because CMS updates the conversion factor and RVUs each year, confirm the current amount against the official CMS Physician Fee Schedule before you rely on it for budgeting or contract talks.
Modifiers and add-ons that pair with 99203
A handful of modifiers show up regularly with this code. Apply them at charge entry so the claim goes out clean:
- Modifier 25. Append it when you perform a significant, separately identifiable E/M service on the same day as a minor procedure, such as evaluating a new patient and also draining a small abscess during the visit.
- Modifier 95. Use it for a synchronous audio-video telehealth visit that meets the 99203 requirements.
- Modifier 93. Apply it for an audio-only telehealth encounter where the payer accepts audio-only E/M services.
- G2211. This add-on code recognizes the extra work of an ongoing, longitudinal patient relationship. Watch the 2026 rule closely: you cannot bill G2211 on a claim that also carries modifier 25.
That last point trips up a lot of teams. So if a visit needs modifier 25 for a same-day procedure, drop the G2211 add-on from that claim rather than letting the pair reject together.
Documentation that supports a 99203 claim
Payers audit E/M coding more than almost any other area, so the note has to show the level, not just imply it. A defensible 99203 record includes:
- A clear chief complaint and a history that fits the presenting problem.
- Exam findings tied to that problem.
- Either the MDM elements you met or the total time, stated plainly. This is the single most important line in the note.
- An assessment and plan with diagnosis codes that match the documented complexity.
- Your specific orders, results, prescriptions, and any care coordination.
- A signature with your credentials and the date.
Above all, link every diagnosis to the work you did. As a result, when the ICD-10 codes and the MDM tell the same story, the claim holds up. For a wider look at how CPT and diagnosis coding fit together, our complete guide to CPT codes lays out the framework.
Common reasons 99203 claims get denied or downcoded
Most 99203 rejections trace back to a short list of avoidable problems:
- New patient rule violated. The patient was actually seen within three years, so the visit belonged to an established patient code.
- MDM not documented. The note does not show two elements at the low level, so the payer downcodes to 99202.
- Time billed but not stated. You selected the code on time but never wrote the total minutes.
- Missing modifier 25. A same-day procedure went out without flagging the E/M as separately identifiable.
- G2211 paired with modifier 25. The prohibited 2026 combination rejects the add-on.
- Diagnosis mismatch. The ICD-10 codes do not reflect the complexity you billed.
So fix these at the front end. In practice, a quick pre-bill check of patient status, the MDM or time statement, and the diagnosis linkage catches nearly all of them.
Key takeaways
- CPT code 99203 is a new patient office visit with low-complexity MDM or 30 to 44 minutes of total time.
- The patient must be new: no visit with the same-specialty provider in your group for three years.
- Low MDM means meeting two of three elements (problems, data, risk) at the low level.
- Medicare pays roughly 105 dollars in 2026, before locality adjustment.
- Watch modifier 25, the G2211 restriction, and always state your MDM or time in the note.
Frequently asked questions about CPT code 99203
When should I use 99203 instead of 99204?
Use CPT code 99203 for a new patient visit with low-complexity decision making, or 30 to 44 minutes of total time. However, step up to 99204 when the MDM reaches moderate complexity or the time runs 45 to 59 minutes. The two codes differ by about 50 dollars, so let the documented work decide, not habit.
Can a nurse practitioner or PA bill CPT code 99203?
Yes. NPs and PAs can report 99203 when the visit meets the MDM or time threshold. Billed under the NPP’s own number, Medicare generally pays 85 percent of the physician rate unless the service qualifies for incident-to billing.
How often can you bill 99203 for the same patient?
Once. It is a new patient code, so it applies to the first qualifying visit. After that, the patient is established, and you move to the 99211 through 99215 range for future encounters.
What is G2211 and how does it relate to 99203?
G2211 is an add-on code that pays for the ongoing work of a longitudinal care relationship. You can add it to a qualifying 99203 visit, but not when the same claim carries modifier 25, which the 2026 rules prohibit.
Final word
CPT code 99203 rewards two habits above all: confirm the patient is genuinely new, and document either your MDM elements or your total time in plain language. Then match the diagnosis codes to the work, apply modifier 25 only when it belongs, and mind the G2211 restriction. As a result, when you handle those pieces consistently, this low-complexity new patient code becomes one of the steadiest, most predictable claims your practice files.
