99204 CPT Code: Billing Guidelines, Reimbursement and Requirements

Every practice has a few codes that quietly pay the bills. The 99204 CPT code is usually one of them. It’s the level 4 new patient office visit, the one providers pick when a first-time patient walks in with real clinical complexity. Perhaps there is a worsening of a chronic illness, perhaps multiple conditions exist that need to be sorted out, or perhaps a new complaint needs to be investigated.

Since the procedure pays well and is frequently performed, payers watch closely. A thin note gets downcoded. A patient who isn’t actually new gets denied. A modifier used the wrong way gets flagged. And practices that under-document end up paid for less work than they really did.

So here’s the full picture of CPT 99204, start to finish. We will cover the official 99204 CPT code description, the 99204 time requirement, and how 99204 medical decision making gets scored. Then we will get into documentation, 99204 reimbursement under Medicare and commercial plans, modifiers, diagnosis pairing, denial patterns, and how 99204 vs 99214 compare. A medical billing company in USA helps healthcare providers manage claims, payments, billing processes, and payer communications. This blog is written for coders, billers, practice managers, and providers who would like to get it right the first time.  

What Is CPT Code 99204?

CPT 99204 is the E/M code for a visit with a new patient in an office or other outpatient setting. It requires a medically appropriate history and/or examination as well as moderate medical decision making. The other option is that you may select the code based on the passage of time, considering that the time consumed by the provider to attend to the patient is at least 45 minutes.

What then is the CPT 99204 code? In other words, this is the code of the first visit that requires deliberation. It is not just about confirming the diagnosis and refilling it; rather, the physician is taking into account all the possible alternatives, analyzing information from outside sources, ordering tests and writing prescriptions, as well as addressing several complex issues at once. The medical coding services will translate the clinical record to the appropriate CPT, HCPCS, and ICD-10 codes.

99204 CPT Code Description 

The AMA’s 99204 CPT code description says, in essence:

Office or other outpatient visit for the evaluation and management of a new patient, which requires a medically appropriate history and/or examination and moderate level of medical decision making. When using total time on the date of the encounter for code selection, 45 minutes must be met or exceeded.

Three phrases in there deserve a second look:

• New patient. There’s a specific three-year rule, which we’ll get to shortly.
• Medically appropriate history and/or examination. Since the 2021 E/M revisions, nobody counts history or exam elements anymore. The provider documents what makes clinical sense for the problem.
• Moderate level of medical decision making. This, or time, is what actually sets the level.

Quick Facts: 99204 at a Glance

The 99204 Time Requirement Explained

Anyone looking for the 99204 45 minutes time or 99204 45 minutes time requirement needs only one number – 45 minutes. There’s some complexity involved in understanding this number, however, and that’s where many billing departments go wrong.

The Meaning Behind 45 Minutes

In terms of today’s CPT terminology, the 99204 45 minutes number refers to a minimum threshold of 45 minutes or greater. The old guidelines used to refer to 45 to 59 minutes; you’ll see many websites repeating it still today. The modern approach is simpler. If the billing provider’s documented total time on the date of the encounter reaches 45 minutes, the visit supports 99204 by time. And if the time runs well past that, a higher-level new patient code may be the more accurate choice, which is why time should always be documented honestly and precisely.

Total Time Means Total Time, Not Just Face-to-Face

What counts is the billing provider’s own time on the date of the encounter, in the room and out of it. That includes:

• Reviewing outside records, test results, and imaging tied to the visit
• Getting or reviewing history from the patient or another person
• Physically examining the patient appropriately
• Counseling/educating the patient or care provider
• Ordering medication, testing, or procedures
• Referring and communicating with other healthcare professionals
• Documenting clinical information in the record
• Independently interpreting results and communicating them to the patient
• Coordinating care, when it isn’t separately reported

What Does Not Count Toward Time

• Clinical staff time (a medical assistant rooming the patient, a nurse taking vitals)
• Travel time
• Time spent on separately reported services or procedures
• General teaching that isn’t tied to that patient’s care
• Any work done on a different calendar day than the visit

That last exclusion catches people all the time. Say a physician reviews outside records the evening before the appointment. That time can’t be counted. Only the date of the encounter counts, and if the provider finishes the note the next morning, that time doesn’t count either.

Sample Time Attestations

Vague statements like “45+ minutes” don’t do much for you. Compare these two.

Weak: “Total time 45 min”

Strong: Based on my experience, I have spent 52 minutes on this particular day for the encounter of this particular patient, which consists of reviewing records/labs not related to cardiology, obtaining the history, performing the physical examination, counseling the patient on medicines and life style, ordering tests, communicating with the referring physician, and documenting it all in the record.

The modified statement identifies the total time involved, associates it to the specific day and notes that the provider personally performed the task.

Prolonged Services and 99204

Often providers ask whether prolonged services add-on is applicable here. Not really. The CPT code 99417 for prolonged service is not reported with 99204. Instead, the prolonged services code applies to those visits that last more than the time associated with the highest-level codes in the new patient family. There is a Medicare specific prolonged service code with different thresholds. Hence, if the new patient encounter lasts long enough after 45 minutes, then the thing to do is to review whether the next-level code fits the case.

Choosing Between Time and MDM

Whichever one makes the most appropriate depiction of the service rendered, you are free to choose for each encounter: MDM when the encounter was complicated from a clinical perspective but efficient, as when an experienced physician navigates multiple issues rapidly.

Time when the encounter entailed a lot of counseling, documentation review, or coordination efforts despite the decision-making being simple. However, mixing them is not possible. You cannot combine 30 minutes of counseling with partially met MDM requirements to create support for a certain level.

99204 Medical Decision Making: Understanding Moderate Complexity

In case you are dealing with MDM in your coding, then the rule about 99204 moderate complexity states that two out of three components of MDM must be of moderate complexity or greater. An outsourced medical billing service will help health care facilities to outsource their billing procedures to professional third parties.

The three components are:

1. Number and complexity of problems addressed
2. Amount and/or complexity of data to be reviewed and analyzed
3. Risk of complications and/or morbidity or mortality of patient management

Two out of three is enough. If problems and risk are both moderate, it doesn’t matter that the data was light. Providers tend to find this part of 99204 medical decision making reassuring once it clicks.

Element 1: Problems Addressed at the Moderate Level

Any one of the following supports a moderate problem level:

• One or more chronic illnesses with exacerbation, progression, or side effects of treatment
• Two or more stable chronic illnesses
• One undiagnosed new problem with uncertain prognosis
• One acute illness with systemic symptoms
• One acute complicated injury

The word to watch is addressed. A problem counts when it’s evaluated or treated at the encounter, not when it’s simply mentioned in the history. A note that says “history of hypertension” with no assessment or plan attached hasn’t addressed anything.

Example: There is a newly diagnosed patient with type 2 diabetes whose control is becoming difficult, together with high blood pressure. This is one chronic disease with progression along with another chronic disease being managed, making it obvious that it is moderate.

Element 2: Data Reviewed and Analyzed at the Moderate Level

Moderate data means meeting one of three categories.

Category 1: Any combination of three from this list:

• Review of prior external notes from each unique source
• Review of the result(s) of each unique test
• Ordering of each unique test
• Assessment requiring an independent historian

Category 2: Independent interpretation of a test performed by another physician or qualified healthcare professional (not separately reported).

Category 3: Discussion of management or test interpretation with an external physician, other qualified healthcare professional, or appropriate source (not separately reported).

New patient visits lean heavily on Category 1, since outside records, referral letters, and lab results are almost always in the mix. A provider who reads a referral note from another practice, looks over an outside A1c, and orders a lipid panel has hit three items already.

A few rules make this easier to apply:

• Each unique test counts once. A CBC that’s ordered and reviewed later is counted when it’s ordered.
• Notes from separate sources count separately, but multiple notes from the same source count as one.
• A “unique test” is defined by its CPT code, so two components of a panel don’t count as two tests.

Element 3: Risk at the Moderate Level

Examples of moderate risk include:

• Prescription drug management
• Decision regarding minor surgery with identified patient or procedure risk factors
• Decision regarding elective major surgery without identified patient or procedure risk factors
• Diagnosis or treatment significantly limited by social determinants of health

Prescription drug management is the most common way a 99204 note reaches moderate risk. But it has to be visible in the note. This implies beginning treatment with a drug, changing the dose, or making an informed decision to continue taking the drug. A list of current medications doesn’t show management.

Quick Reference: MDM at a Glance

Worked MDM Examples

Example 1: Primary care. A 58-year-old new patient with hypertension and type 2 diabetes comes to the clinic, and the patient’s glucose levels are increasing. The physician goes through laboratory work done externally, does a CMP and A1C, and adds another diabetes drug.

• Problems: chronic illness with progression (moderate)
• Data: reviewed external labs and ordered two unique tests (meets Category 1)
• Risk: prescription drug management (moderate)

All three elements land at moderate, so this is well supported for 99204.

Example 2: Cardiology. A patient is referred to a new provider with complaints of palpitations. A review of a referral ECG study, echocardiogram, Holter monitor and beta blocker are done by the new provider alone.

• Problems: undiagnosed new problem with uncertain prognosis (moderate)
• Data: independent interpretation of an outside test, plus ordered tests (moderate)
• Risk: prescription drug management (moderate)

This supports 99204.

Example 3: Orthopedics. A new patient has chronic knee pain and worsening function. Imaging is reviewed, an MRI is ordered, and the provider discusses possible elective surgery down the road.

• Problems: chronic illness with progression (moderate)
• Data: image review and one ordered test, plus outside notes (moderate)
• Risk: decision regarding elective major surgery without risk factors (moderate)

This supports 99204 too.

Example 4: Where it falls short. A new patient has a single, well-controlled chronic condition. There are no new orders, and the prescription is continued with no changes or discussion. Problems are low, data is minimal, and the risk story isn’t documented. That won’t hold up as 99204 by MDM, and no amount of extra wording added afterward should be used to force it.

Who Counts as a New Patient for 99204?

Even a well-documented visit may be unsuccessful if the patient is not really a new one. According to the CPT guidelines, 99204 new patients are defined as an individual who has not received any professional services from the physician or from any other physician of the same specialty and subspecialty in the same group practice during the previous three years.

Several issues that should be considered on a daily basis include:

• Professional services are interpreted as face-to-face services which comprise visits, procedures, and consultations. In case of telehealth visits, they are considered prior services if provided in the same manner as face-to-face ones.
• The three year period goes backward from the day of the new visit.
• Specialty and subspecialty matter. Two providers in the same group with different specialties can each see the same patient as “new.” Two providers of the same specialty in the same group can’t.
• Since NPs and PAs are considered to belong to the same specialty as the physician, if an encounter with an NP occurs in this specialty, it will make the patient establish himself in this specialty and in the group practice as well.
• The covering and locum practitioners also use the same guidelines on groups and specialties.
• Encounters that include consultations only and prior procedures are also considered to be professional encounters.

In case the payment is denied on account of the inclusion of the prior encounter, you should ascertain whether the prior encounter was really performed by the same specialty practitioner in the same group practice within 3 years of time. In case the payer has denied the payment on the right grounds, you should resubmit the claim using an appropriate code for an established patient. An example may be 99214 when the level of MDM is moderate. 

99204 Documentation Requirements

The 99204 documentation requirements aren’t about volume. They’re about clarity. A good note lets a reviewer see, in under two minutes, why this was a moderate-complexity new patient visit.

The Essential Elements

• Chief complaint and reason for the visit
• Medically appropriate history – history of present illness, relevant past medical, family, and social history, and review of systems where it applies
• Medically appropriate examination focused on the presenting problems
• Assessment – each problem addressed, with the clinical reasoning
• Plan: orders, prescriptions, referrals, counseling, and follow-up
• Data reviewed –  specific tests, dates, and outside sources
• Risk indicators – the medication decisions, procedure discussions, or SDOH limits that shaped care
• Total time on the date of service, if billing by time
• Signature, credentials, and date of service

Documentation That Protects a 99204 Claim

1. Discuss reasoning, not just conclusions. 

Reviewed the risks and advantages of initiating SGLT2 inhibitor compared to upping metformin. The patient favors taking medicine orally; SGLT2 inhibitor initiation is far more potent than Start Jardiance.

2. Name the data.
Reviewed outside CBC and CMP dated 3/2 from Dr. Patel’s office and ordered TSH and lipid panel” beats “reviewed labs” every time.

3. Link diagnoses to actions.
Every problem you want credit for needs an evaluation, a decision, or a plan.

4. Avoid cloned notes.
Copying forward text and repetitive language among several patients appear dubious during audit, and a level 4 claim will definitely attract more scrutiny than a lower-paid one.

5. Document time precisely, when you’re using time.
State the total, the date, and what the time included.

6. Record social determinants when they change care.
If cost, transportation, or housing limited the treatment choices, say so specifically. It can support moderate risk.

Sample 99204 Assessment and Plan (Illustrative)

Assessment: Type 2 diabetes with hyperglycemia, worsening control (A1c 9.4% from outside lab dated 2/18). Essential hypertension, above goal today. Patients report difficulty affording brand-name medications.

Plan: Reviewed results from outside labs and previous studies done at Dr. Ahmed’s clinic. CMP, UA with microalbumin, and lipid profile ordered. Looked at other medications choices by determining to take another pill or insulin and went with empagliflozin considering heart disease risk and preference for taking pills. Lisinopril dose changed. Budget constraints considered. Will follow up with the patient in 4 weeks. 

How rapidly can a reviewer identify the issues (chronic disease with progression), the evidence (results from outside labs, three orders), and the risks (medication management, and one SDOH)?

How to Code 99204: A Step-by-Step Workflow

If you’re asking how to code 99204, this process works reliably. Turn it into a checklist in your EHR or coding tool.

1. Establish new patient status. Verify the three-year, same-specialty rule based on your system and the payer’s history.
2. Identify the place of service. 99204 is applicable only in office or other outpatient facilities like clinics and hospital outpatient departments but not in inpatient, emergency, and nursing facility encounters.
3. Select the approach. Choose MDM or total time, whichever best suits the encounter.
4. Code MDM. Identify two out of three components at moderate level in the documentation and document where each component is documented in the chart.
5. Or establish the time. Document 45 minutes of the work of the billing provider during the date of service and exclude staff and separately reported services’ times from the calculation.
6. Ascertain whether there are any same-day procedures/services. Determine the modifier that applies to the situation – 25 modifier or other.
7. ICD-10-CM codes for medical necessity and sequence of coding.
8. Establish the place of service and modifiers.
9. Assign code 99204 for one unit during the day of service.
10. Ascertain payer’s guidelines on prior authorization, telemedicine, and physician type.

The above process is the foundation for proper coding of 99204 code and at the same time is a good training tool for novice coders.

99204 vs 99214: Same MDM, Different Patient Status

99204 vs 99214 is one of the clearest comparisons in E/M coding. Both codes require moderate medical decision making. What separates them is who the patient is.

So why does the new patient visit pay more? Because the work is different. The provider builds a history from scratch, reconciles outside records, sets up a problem list, and often orders a wider set of baseline tests. The higher RVUs reflect that extra effort.

Two mistakes tend to show up around this comparison:

• Billing 99204 for a returning patient who was seen by the same specialty in the same group within three years. That’s an incorrect new patient claim and a common denial reason.
• Billing 99214 for a truly new patient out of habit, which can leave real money uncollected.

If your claims data shows a large share of new patients being billed as established, take a look at whether scheduling and registration are flagging new patients correctly. Denial management services identify the causes of rejected or denied claims and help providers correct, appeal, and recover unpaid revenue.

99204 Reimbursement: What Will You Actually Get Paid?

The 99204 reimbursement is based on the payer, the agreement, the setting of the service, and your practice location. Below is the breakdown.

99204 Medicare Reimbursement

Calculation of Medicare reimbursement for this service is as follows:

(Work RVU * Work GPCI + Practice Expense RVU * PE GPCI + Malpractice RVU * MP GPCI) * Conversion Factor

In 2026, the conversion factor will be about $33.40 for all physicians except for those enrolled in advanced APMs who will have a conversion factor of about $33.57. With the total non-facility RVU for 2026 estimated to be about 5.31, the 99204 Medicare reimbursement for the office visit will be about $177 without any localities adjustment.

A few points to note on the 99204 Medicare payment of 2026:

Facility settings receive reduced rates. If 99204 procedures are done in a hospital outpatient department or facility setting, then the practice expense component is reduced, and hence the physician fee gets reduced. For 2026, CMS made a change in how it allocated indirect practice expenses, giving preference to non-facility settings.

E/M visits were excluded from efficiency adjustment. CMS finalized a 2.5% efficiency reduction in work RVUs of many non-time based

Medicare pays 80%, the patient owes 20%. After the annual Part B deductible, Medicare pays roughly 80% of the allowed amount, which is about $142 on the national figure. The rest is the patient’s coinsurance, or a supplemental plan picks it up.

Participation status matters. Non-participating providers are paid 95% of the fee schedule amount and may balance the bill up to the limiting charge.

99204 Medicare Reimbursement Rate by Locality

Reimbursement rate for code 99204 varies by location due to geographic practice cost indices. High-cost regions, such as Manhattan and San Francisco Bay Area, will have a rate higher than the national rate, whereas low-cost regions will have a rate lower than the national rate. The process for obtaining the rate is:

• Find the Medicare Administrative Contractor and locality for your practice.
• Search 99204 on MAC fee schedule or CMS fee schedule look-up tool.
• Identify the place of service (office or facility).
• Identify the participating and non-participating provider status.
• Budgeting solely on the national average is not advisable.

99204 Reimbursement Rate from Commercial Payers

Since commercial payers negotiate their own rates, the 99204 reimbursement rate from a commercial payer may be similar or even significantly higher than the Medicare reimbursement rate for the same code. In most cases, the contract is made as a certain percentage of the Medicare fee schedule, and the percentage can vary depending on the market and the ability of the practice or health system to negotiate. Generally speaking, one could expect the allowed amount for 99204 to be somewhere between the Medicare fee schedule and two times the rate from the Medicare fee schedule.

A few practical steps:

• Extract the allowable for 99204 using your top five payers.
• Compare that to your average cost of an initial patient encounter.
• Be aware of any site-of-service adjustments.
• See if the payer pays you less for NPs and PAs than for doctors.
• Evaluate the E/M rules of each payer for use of modifiers and edits.

Add-On Codes to Keep in Mind

Medicare’s G2211 add-on code recognizes the complexity of ongoing care relationships. It may be billable with an office E/M when your practice will be the continuing focal point of a patient’s care. It comes with its own rules, and it generally isn’t paid when the E/M carries modifier 25 for a same-day procedure. Check the current payer policy before you add it. 

99204 Modifiers: 25, 59, and Others

Modifiers give the payer extra context. With 99204, three questions come up most often.

99204 Modifier 25

99204 – Modifier 25 informs the insurance company that E/M service was significant and separate from another procedure/service performed on the same day by the same provider.

When modifier 25 fits:

• The new patient is evaluated for knee pain, diagnosed, and treated. Joint injection is also performed. The new patient was more thoroughly evaluated than the simple injection would suggest.
• The new dermatology patient has many skin complaints; one of the lesions is biopsied. The E/M involves other diagnoses besides the biopsy.

When it doesn’t fit:

• The E/M was composed solely of services that were routine to the procedure like the pre-procedure evaluation, discussion on the consent and post-procedure instructions.
• The single problem presented was handled during the visit, and the E/M and procedure were essentially the same service.

For procedures with a 0 or 10-day global period, the decision to perform the procedure is already included in the procedure payment. So the E/M needs extra, distinct work to justify modifier 25. Clearly document your separate evaluation, preferably in its own portion of the note along with its own assessment and plan.

When you decide on a major surgery during the visit, the correct modifier to use is 57 (decision for surgery) when the visit is on the day prior or day of a procedure that has a 90-day global period. 

99204 Modifier 59

Modifier 59 along with 99204 is the most confusing combination when it comes to billing. Modifier 59 shows a distinct procedural service and is used for procedure to procedure bundling edits. In case E/M is being done with procedure then NCCI guidelines will suggest modifier 25 and not modifier 59. Using modifier 59 with E/M leads to claim denial and also catches the eye of reviewers. 

If a payer edit is bundling your 99204 into a procedure:

1. Review the documentation to confirm the E/M was truly separate.
2. If it was, append modifier 25 and submit the note.
3. Save 59, or the X modifiers (XE, XS, XP, XU), for procedure codes when the documentation supports a distinct service.

99204 Telehealth and Modifier 95

For 99204 rendered via telehealth technology with real-time video-audio interactions, most insurers mandate use of the 95 modifier along with the appropriate place of service code. Medicare’s guidelines on using its telehealth services have changed a number of times within recent years; therefore, it is necessary to check whether Medicare and every other insurer allows using the code. You should document the patient’s consent, location, platform used, and synchronicity of the visit. POS 21 in medical billing identifies an inpatient hospital as the location where healthcare services are provided.

Diagnosis codes for 99204: Matching ICD-10-CM to the Visit

There is no particular diagnosis for 99204. CPT code represents the complexity of the services performed, whereas ICD-10-CM codes represent the medical necessity of these services. The most appropriate diagnosis codes for 99204 are those that are specific, supported by the note, and related to the issues discussed.

Diagnosis coding tips:

• Be as specific as the documentation allows. It’s acceptable to use unspecified codes when the condition is really unspecified, but you open yourself up to queries if more information is available.
• Put the chief complaint first.
• Only include chronic illnesses if they were discussed. An illness listed in the documentation but never mentioned isn’t eligible for MDM points and shouldn’t be included in your billing.
• Use symptom codes in the absence of a diagnosis. In outpatient medical coding, probable, suspected and “rule out” diagnoses are not supposed to be used as a diagnosis code.
• Link the diagnosis modifier to the service on the claim form. This will help your payer figure out what diagnoses qualify for 99204.

99204 Claim Requirements: A Pre-Submission Checklist

Before you hit send, confirm these 99204 claim requirements:

• Patient eligibility verified and demographics accurate
• Correct rendering and billing provider, valid NPI, and active payer enrollment
• Correct place of service (11 for office, 19 or 22 for hospital outpatient, telehealth codes per payer)
• One unit of 99204 per date of service
• ICD-10-CM codes linked to the service
• Modifiers applied only when supported
• Prior authorization or referral where required
• New patient status verified
• Claim submitted within the payer’s timely filing limit

One note on enrollment. A new patient visit performed by a provider who isn’t yet credentialed with the payer is a classic cause of a 99204 denial. Credentialing delays, more than coding errors, account for a surprising share of denied new patient claims, so build credentialing status into your scheduling process.

99204 Claim Denials: Causes and Fixes

99204 claim denial patterns tend to repeat themselves. Here’s what to watch for and how to respond.

Building a Strong 99204 Appeal

The successful appeal must be brief, concrete and organized. The process includes the following steps:

• Identification of the claim. Specify the patient’s name, date of the service, claim number, as well as the payer’s explanation of the denial.
• Basis of appeal. Include the guideline or payer’s policy which is relevant to the case.
• Evidence. Submit the clinical note signed by the physician along with the specific lines showing the problems discussed, the data analyzed and risk factors mentioned, or time statement if applicable to the time-based coding.
• Documents. External laboratory tests, referral letters and authorization forms may serve as the additional documents of the case.
• Filing of appeal on time. The deadline differs among payers and needs to be found out individually.

   Follow-up of the appeal. Note the date when it was submitted.

Preventing Denials at the Source

Most denial prevention happens before the claim even exists:

• Front desk: confirm whether the patient is new and capture accurate insurance details.
• Providers: document thinking, data, and risk clearly.
• Coders: run the MDM or time check before releasing the claim.
• Billing: scrub claims for modifier logic and payer edits.
• Management: review denial reports monthly, grouped by reason and payer.

Who Can Bill 99204?

99204 can be billed by physicians (MDs/DOs), nurse practitioners, and physician assistants if the procedure comes under their scope of practice and they have enrollment with the payer.

A few details matter:

• Incident-to billing (billing under the physician for a service done by a non-physician) generally isn’t available for new patient visits under Medicare, because incident-to requires that the physician initiated the course of treatment. A new patient first seen by an NP is billed under the NP’s own NPI.
• Split/shared visits apply mainly in facility settings, and the billing practitioner is whoever performed the substantive portion, using either time or MDM.
• Residents require teaching physician documentation and presence rules to be met.
• Commercial plans sometimes reimburse NPs and PAs at a percentage of the physician rate, so read each contract.

Best Practices to Protect Your 99204 Revenue

Excellent practices consider E/M medical coding accuracy to be part of their normal operating procedures rather than something done on occasion. Top medical billing companies in Ohio in 2026 can provide services such as medical billing, coding, denial management, credentialing, and revenue cycle support for healthcare practices.

• Train providers on MDM, not just code numbers. A short refresher on the three elements often improves documentation quickly.
• Templates must be used with caution. Problem prompts, data review prompts, and risk prompts may help, but not those which automatically populate information that is not supported.
• Perform periodic audits. Check 10 to 20 visits from each provider per quarter and analyze the codes chosen in relation to the documentation provided. This information can be used as coaching, not punishment.
• Watch your coding distribution. Compare the use of your level 4s and other new patient codes with specialty benchmarks. An increase needs investigation before a payer does this for you.
• Denial trends must track the reasons behind the denials. This will tell you whether the problem can be corrected at registration, through an EHR adjustment, or provider education.
• Verify eligibility and new patient status prior to the visit, not post denial.
• Keep informed about payer policies. Changes to E/M guidelines, telemedicine reimbursement, and modifier requirements occur frequently.
• Consider using a coding and billing expert. This can be especially helpful to busy practices where outside expertise can free up staff time. The objective is not to bill more; it is to bill accurately.

Key Takeaways

• The CPT code 99204 indicates a visit to a new patient with moderate MDM or 45 minutes of the physician’s total time on the day of service.
• MDM or Time, but never both. For MDM, two out of three criteria need to be moderate.
• Ensure that you have verified the patient being new through the three-year and same-specialty requirement.
• The Medicare payment will be around $177 in an office-based setting in 2026, whereas commercial payment is dependent on individual agreements.
• The difference between 99204 and 99214 lies in the patient’s status and not the complexity of the MDM.
• Modifier 25 should be added if the E/M service provided was significant and separate from the same-day procedure.
• Modifier 59 is for the procedure and not the E/M service.
• Denials of code 99204 arise due to poor documentation, new patient status errors and noncoverage.

Final Thoughts

CPT 99204 is an incentive for those who want precise practices. It is not about trying to go up; it is about making sure the documentation is as it should be and the code corresponds to that. An approach based on complete MDM documentation, validated new patient status, and auditing will make CPT 99204 a very dependable source of income for the practice.

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