The Complete Guide to CPT Codes for Dermatology Consult

If you have ever tried to figure out how to bill for a dermatology consultation, you know the feeling. You look at the code book. You see numbers like 99242 and 99243. Then you see 99204 and 99205. Suddenly, your head starts to spin.

Why are there two sets of codes for what feels like the same thing? And why does Medicare treat these codes differently than a private insurance company?

You are not alone. This is one of the most confusing areas in medical billing.

In this guide, we will walk through everything you need to know about the cpt code for dermatology consult services. We will look at the rules, the exceptions, and the exact steps to make sure you get paid correctly.

Let us start from the beginning.

What Is a Consultation in Dermatology?

Before we talk about numbers, we need to talk about definitions.

In the medical world, a consultation is not simply a second opinion. It is a specific type of service with three strict requirements:

1. A physician or other qualified healthcare provider (the “requesting provider”) asks for the dermatologist’s opinion.

2. The dermatologist reviews the patient’s medical history, examines the patient, and prepares a written report.

3. The dermatologist sends that report back to the requesting provider.

If there is no request, it is not a consultation. It is a visit.

This is the most common mistake we see. A patient walks into a dermatology office. They have a rash. They want treatment. The primary care doctor did not send a formal request. That is an office visit, not a consult.

The Requesting Provider Rule

The request must come from a different specialty. A dermatologist cannot ask another dermatologist in the same practice for a “consult” and bill the consult codes. That does not work.

The requesting provider must document their need for your opinion. The dermatologist must document that they received the request and that they sent back their findings.

The Main CPT Codes for Dermatology Consultations

Now, let us look at the specific codes.

For dermatology, you will most often use the outpatient consultation codes. These range from 99242 to 99245. The difference between them is the medical decision making (MDM) or the time spent.

Here is the breakdown.

A very important note: Medicare and many other payers no longer accept these outpatient consultation codes (99242-99245). They want you to use the standard office visit codes (99202-99205 for new patients or 99212-99215 for established patients).

We will talk more about that in a moment. For now, know that private insurance (Blue Cross, Aetna, Cigna) often still accepts the consult codes. Medicare does not.

Inpatient Dermatology Consult Codes

If you see a patient in a hospital, nursing home, or inpatient psychiatric facility, the rules change slightly.

For inpatient consults, you use codes 99252 to 99255.

These are based on time or medical decision making, just like the outpatient codes. However, for a general dermatologist working in a hospital, you will most likely use 99253 (moderate) or 99254 (high).

When to Use Office Visit Codes Instead of Consult Codes

Let us spend a moment on the Medicare rule because it affects so many dermatology practices.

In 2010, Medicare stopped paying for consultation codes (99242-99255). They decided that a consultation is essentially the same as a new patient visit or an established patient visit.

So, if you have a Medicare patient, here is what you do:

• New Medicare patient sent by another doctor: Use 99202 to 99205 (New patient office visit).

• Established Medicare patient sent by another doctor: Use 99212 to 99215 (Established patient office visit).

Do not use 99242 for a Medicare patient. It will be denied.

But what about the report?

You still need to send a report to the requesting doctor. That is good medicine. You just cannot bill the consult code. You bill the visit code.

Many commercial payers follow Medicare’s lead. Before you bill a consult code, call the insurance company or check their website. Ask one question: *”Do you accept outpatient consultation codes 99242-99245?”*

If they say no, use the office visit codes.

New Patient vs. Established Patient in Dermatology Consults

This is another area where dermatology billing gets tricky.

A patient is considered “new” if they have not received any professional services from your dermatology practice (or any physician of the same specialty in the same group) within the past three years.

However, if a patient comes for a consult about a mole, but they saw your partner three years and one month ago, they are a new patient.

Common confusion scenario:

A primary care doctor sends a patient to you. You have never seen them. But six months ago, the patient saw a different dermatologist in your same building but in a different practice. That does not count. They are new to your practice.

But if the patient saw a nurse practitioner in your exact practice last year, they are an established patient.

Important distinction for consults: Even if the patient is established, you can still bill a consult code (if the payer accepts it) provided there is a formal request from an outside provider. You do not need to use the established visit codes just because the patient has been in your office before.

Time-Based Billing for Dermatology Consults

In 2021, the coding rules changed significantly. Now, you can choose to bill a consult code based on either:

1. Medical decision making (MDM) – The complexity of the patient’s problems and the risk.

2. Total time – The time you spend on the consult on the day of the encounter.

This is a big deal for dermatologists.

What counts toward total time?

For a dermatology consult, you can count:

• Time face-to-face with the patient.

• Time reviewing the outside medical records (from the requesting doctor).

• Time writing the consult report.

• Time talking to the requesting doctor on the phone.

• Time ordering tests or medications.

You cannot count travel time or time spent on other patients.

Example: Time-based billing for a complex rash

A dermatologist spends 20 minutes examining a patient with a severe, undiagnosed full-body rash. Then, the dermatologist spends 15 minutes reviewing the patient’s three-year history from the primary care doctor’s records. Then, the dermatologist spends 10 minutes writing a detailed report and calling the requesting doctor.

Total time: 45 minutes.

That qualifies for 99244 (60 minutes is the threshold for high complexity, but wait). Actually, check the time thresholds:

• 99242: 30 minutes

• 99243: 40 minutes

• 99244: 60 minutes

If the dermatologist only has 45 minutes of total time, they cannot use 99244. They would use 99243 (40 minutes). You need to meet or exceed the time threshold.

Time-based billing is excellent for complex patients who take a lot of chart review and communication but may not have “high” medical decision making.

The Required Elements of a Consult Report

To bill any consult code (99242-99245), your note must contain specific elements. Without these, the insurance company will downgrade your code to a lower level or deny it completely.

Here is what your dermatology consult note needs:

1. The Request

You must document who asked for the consult and when.

“Requested by Dr. Jane Smith (Primary Care) on April 2, 2026, for evaluation of a suspicious lesion on the left forearm.”

2. The Reason

Why is the consult needed? What is the question?

“Question: Is this lesion malignant? And if so, what is the recommended treatment plan?”

3. Your History and Exam

This is your standard dermatology work. History of present illness (HPI). Review of systems (ROS). Full skin exam or focused exam, depending on the question.

4. Your Opinion

This is the core of the consult. You must provide an answer to the requesting doctor’s question.

“Opinion: The lesion is consistent with a benign seborrheic keratosis. No biopsy needed. Reassurance provided to the patient.”

5. Your Plan

What do you recommend?

“Plan: Continue annual skin exams. No further treatment needed at this time.”

6. The Communication

You must document that you sent the report back to the requesting provider.

“A copy of this note has been faxed to Dr. Jane Smith’s office.”

If you miss any of these, you do not have a consult. You have a visit.

Common Dermatology Scenarios and the Correct Code

Let us look at real-world examples. This will help you see the difference between a level 2 and a level 4 consult.

Scenario 1: The Simple Mole Check

A patient comes to you. The requesting doctor wants to know if a 5mm mole on the back is dangerous. You look at it. You say it is benign. You tell the patient to come back in one year. You send a one-paragraph report to the requesting doctor.

• Total time: 15 minutes (too low for time-based coding).

• Medical Decision Making: Low. One stable problem. Minimal risk.

Correct code: 99242 (if payer accepts consults) or 99202 (new patient visit).

Scenario 2: The Chronic Psoriasis Patient

A patient with known psoriasis is having a flare. Their rheumatologist requests a dermatology consult to rule out psoriatic arthritis overlap. You review the rheumatologist’s notes. You examine the skin and nails. You prescribe a new topical steroid and order a blood test to check for inflammation markers. You write a two-page report.

• Total time: 38 minutes.

• Medical Decision Making: Moderate. Prescription drug management. One chronic condition with exacerbation.

Correct code: 99243.

Scenario 3: The Suspicious Skin Cancer

A primary care doctor sends a patient with a changing, bleeding lesion on the nose. You take a full history. The patient has a history of melanoma in the family. You perform a dermoscopy. You decide to do a shave biopsy. You prescribe an antibiotic to prevent infection. You coordinate with the requesting doctor about possible Mohs surgery.

• Total time: 55 minutes.

• Medical Decision Making: High. Undiagnosed new problem with uncertain prognosis. Procedure (biopsy) with risk. Prescription medication.

Correct code: 99244.

CPT Codes for Telehealth Dermatology Consults

Telehealth has changed dermatology forever. Store-and-forward teledermatology (where the primary care doctor sends photos) and live video consults are now common.

Live video (synchronous)

For a live video consult, you generally use the same codes as in-person: 99242-99245 or 99202-99205. You will add the modifier 95 (Synchronous telemedicine service) or the place of service code 02 (Telehealth).

Many payers have extended telehealth coverage. But you must check. Some commercial payers still require the consult to be in person.

Store-and-forward (asynchronous)

This is unique to dermatology. The requesting doctor sends you photos and a history. You review it later and send back a report.

Medicare does not generally pay for store-and-forward consults (except in specific demonstration projects). Some private payers do.

For store-and-forward, you may use 99446 to 99449 (Interprofessional telephone/Internet assessment). These codes are for the consulting dermatologist.

• 99446: 5-10 minutes.

• 99447: 11-20 minutes.

• 99448: 21-30 minutes.

• 99449: 31 minutes or more.

Important: These codes are not for direct patient interaction. The patient is not present. You are giving advice to another provider. Do not use these if you talk to the patient directly.

Top 5 Denial Reasons for Dermatology Consult Codes

Even experienced billers get denials. Here are the most common reasons insurance companies reject consult codes in dermatology.

1. Missing the Requesting Provider’s Name

Your note must say, “At the request of Dr. X.” If it does not, the payer will say, “No request, no consult.” The claim will be denied.

2. No Report Sent Back

The insurance company may ask for your notes. If your notes do not show that you sent a report to the requesting provider, they will deny the consult and recode it as an office visit (which may pay less).

3. Using Consult Codes for Medicare

This is a guaranteed denial. Medicare does not pay for 99242-99245. If you bill these to Medicare, you will get a denial code CO-97 (The benefit for this service is not included in this policy).

Fix this: Use 99202-99205 for new Medicare patients. Use 99212-99215 for established Medicare patients.

4. Same Specialty Request

If a dermatologist asks another dermatologist in the same group for a consult, it is not a billable consult. The payer will say it is a transfer of care or a referral, not a consult.

5. Medical Decision Making Does Not Match the Code

You billed a 99244 (high complexity), but your note only shows moderate complexity. The payer will automatically downgrade you to 99243 and pay less. This is a common audit risk.

How to Document Medical Decision Making for Consults

Since 2021, medical decision making (MDM) has three elements. For a dermatology consult, you need two of the three to meet the level.

Dermatology-specific MDM tips:

• A new suspicious lesion with no prior biopsy = High problem (undiagnosed new problem).

• Two stable conditions (acne and rosacea) = Moderate problem.

• Reviewing outside records (from the requesting doctor) counts as “data.” If you review 3 unique records, that moves you toward higher MDM.

• Ordering a biopsy = Moderate risk (minor surgery with risk).

• Ordering a blood test for a patient on methotrexate = High risk (prescription drug management).

Modifiers Often Used with Dermatology Consults

Modifiers tell the insurance company something special about the service.

• Modifier 25: Significant, separately identifiable E/M service on the same day as a procedure.

  • Example: A patient comes for a consult (99244) and you also do a cryosurgery (17000). Append modifier 25 to the consult code to show it was separate.

• Modifier 57: Decision for surgery on the same day or day before a major procedure.

  • Example: A consult for a skin cancer, and you decide that day to do a Mohs surgery. Append 57 to the consult.

• Modifier 95: Synchonous telemedicine service.

• Modifier GT: (Older) Via interactive audio and video telecommunications system. (Many payers now prefer 95).

Important note: Do not use modifier 25 on every consult. Use it only when the consult is truly separate from a procedure performed on the same day.

Global Periods and Consult Codes

A global period is a window of time after a procedure during which you cannot bill separately for related E/M services.

Dermatology has many minor procedures (biopsies, cryosurgery, excisions). These have a 0-day or 10-day global period.

What happens if you do a consult and a biopsy on the same day?

• If the biopsy is unrelated to the consult question: Bill both. Append modifier 25 to the consult.

  • Example: Consult for a rash. Patient asks about a different mole. You biopsy the mole. The consult and the biopsy are unrelated. Bill both.

• If the biopsy is related to the consult question: You can still bill both, but you must document that the decision to biopsy was made during the consult. This is normal. The consult includes the evaluation. The biopsy is a separate procedure. Append modifier 25.

Post-operative consults

If a patient had a procedure (like an excision) and then another doctor requests a dermatology consult for a complication (like an infection), that is a billable consult. The global period of the first procedure does not apply to a new problem from a different provider.

Documentation Templates for Dermatology Consults

Using a template can save you time and prevent denials. Here is a simple, compliant template.

Header:
Consultation Note

Patient Name: [Name]
DOB: [Date]
Date of Service: [Date]

Requesting Provider: [Name, Specialty, NPI]
Reason for Consult: [Specific question from requesting provider]

History:
Chief complaint: [Reason for visit]
HPI: [Location, quality, severity, duration, timing, context, modifying factors, associated signs/symptoms]
ROS: [Pertinent positives and negatives]
Past medical history: [Relevant history, including skin cancer]

Physical Exam:
[Full skin exam OR focused exam as appropriate. Describe lesions using ABCD criteria where relevant.]

Assessment/Opinion:
Answer the requesting provider’s question directly.

Plan:
[List next steps: tests, medications, follow-up, referrals.]

Communication:
This note will be sent to [Requesting Provider Name] via [fax/secure portal/mail] on [date].

Signature:
[Dermatologist name and credentials]

Payer-Specific Rules You Must Know

Not all insurance companies play by the same rules. Here is a quick reference for major payers.

Your action item: Create a spreadsheet for the top 10 payers in your area. Call each one once a year to confirm their consult code policy.

The Financial Impact of Choosing the Wrong Code

Choosing the wrong code is not just a denial. It affects your revenue significantly.

Let us look at the difference in Medicare reimbursement (2026 approximate rates).

• 99204 (New patient, high complexity): $180 – $200

• 99244 (Consult, high complexity – not paid by Medicare): $0 (denied)

If you bill 99244 to Medicare, you get nothing. You have to resubmit with 99204. That takes staff time and delays payment.

Now look at commercial insurance.

• 99243 (Consult, moderate complexity): $150 – $220 (depending on the contract)

• 99203 (New patient, moderate complexity): $120 – $180

The consult code often pays 15-25% more than the office visit code. That is why dermatologists prefer to use consult codes when they are allowed.

But do not commit fraud. Only use consult codes when the three requirements (request, opinion, report) are met.

Frequently Asked Questions (FAQ)

1. Can I bill a consult code if the patient refers themselves?

No. A self-referred patient is not a consult. A patient cannot request their own consult. The request must come from another qualified healthcare provider. If a patient calls your office directly, that is an office visit.

2. What is the difference between a referral and a consult?

A referral means “take over this patient’s care.” A consult means “give me your opinion, and I will keep managing the patient.” In a referral, you become the treating provider. In a consult, you give advice and send the patient back.

3. Does Medicare ever pay for consult codes?

For outpatient dermatology, generally no. However, Medicare does pay for inpatient consult codes (99252-99255) in certain situations. For outpatient, use office visit codes.

4. Can a nurse practitioner or PA bill a consult code?

Yes, if state law allows them to practice independently or under supervision. The billing provider (NP or PA) must have the authority to perform consultations. The same rules apply: request, opinion, report.

5. What if I spend 90 minutes on a complex consult?

Use 99245 (outpatient, prolonged consult) if the payer accepts consults. The time threshold for 99245 is 80 minutes. If your total time is 90 minutes, you have exceeded the threshold, but there is no higher code. Bill 99245. Document your time carefully.

6. Do I need a separate consult code for pediatric dermatology?

No. The same CPT codes (99242-99245) apply to patients of all ages. However, pediatric patients often require more time and a lower threshold for medical decision making due to communication challenges. Document that.

7. What is a “split/shared” consult?

A split/shared visit is when a physician and a non-physician practitioner (NPP) (like a PA or NP) provide the consult together. For Medicare, you can bill under the physician if they provided a substantive portion (more than half) of the visit. This is complex. Check your payer’s policy.

Additional Resources for Dermatology Billing

No single article can cover every nuance of dermatology coding. The rules change every year. You need reliable, up-to-date sources.

Here are three essential resources:

1. AAD Dermatology Coding Doctor: The American Academy of Dermatology offers a subscription-based coding resource specifically for dermatologists. It includes case studies, quizzes, and updates on payer policies.

   Link: Search “AAD Dermatology Coding Doctor” on the AAD website.

2. CMS E/M Services Guide: The Centers for Medicare & Medicaid Services publish a free guide to Evaluation and Management services. It is technical but accurate.

   Link: Search “CMS E/M Services Guide 2026” on the CMS.gov website.

3. Local Coverage Determinations (LCDs): Every Medicare Administrative Contractor (MAC) publishes LCDs for dermatology services. Search for your MAC (e.g., “Noridian Dermatology LCD”) to see exactly what they require for consults in your state.

A Realistic Look at Audit Risks

Let us be honest. Dermatology consult codes are on audit radars.

Why? Because they are easy to misuse.

An auditor will look for three things in your consult notes:

1. The request: Is it documented clearly? Does it come from an eligible provider?

2. The medical necessity: Does the level of code match the complexity of the patient?

3. The report: Did you actually send the opinion back?

If you miss any of these, the auditor will recode your consult to an office visit. You will have to pay back the difference. In a major audit, this can mean thousands of dollars in clawbacks.

Protect yourself:

• Do not use templates that automatically fill in “Requested by Dr. X.” Type the name manually each time.

• Do not copy and paste the same report for every patient.

• Keep a log of consult reports you send out (date, patient name, requesting provider, method of delivery).

Step-by-Step Workflow for a Compliant Dermatology Consult

Here is a simple workflow for your practice.

Step 1: Verify the request.
Ask the patient: “Who sent you here?” If they say “My primary care doctor,” call that office to confirm. Get the request in writing if possible.

Step 2: Verify the payer.
Check if the patient has Medicare. If yes, prepare to use office visit codes (99202-99205). If not, check your payer list to see if consults are allowed.

Step 3: Perform the consult.
Take a thorough history. Perform the exam. Document everything. Write your opinion clearly. Answer the requesting doctor’s question directly.

Step 4: Document the time or MDM.
Choose your method (time or MDM). Stick to it. If using time, track your minutes: “Total time today = 42 minutes. This includes 25 minutes face-to-face, 10 minutes reviewing records, and 7 minutes writing the report.”

Step 5: Select the code.
Use the table above to match your time or MDM to the correct level (99242-99245 or 99202-99205).

Step 6: Send the report.
Before you close the note, send the report. Fax it. Upload it to a portal. Mail it. Then document that you sent it.

Step 7: Bill the claim.
Submit the claim with the correct code, place of service, and any modifiers.

The Future of Dermatology Consult Coding

What will happen in the next five years?

Two trends are clear.

First, more payers will follow Medicare’s lead and stop paying for outpatient consultation codes. We have already seen this with many Blue Cross plans. The reason is simple: payers believe there is no clinical difference between a consult and a new patient visit. They see it as a way to pay more for the same work.

Second, telehealth and store-and-forward codes will expand. As artificial intelligence (AI) tools for dermatology improve, primary care doctors will take better photos. They will send more e-consults. The interprofessional codes (99446-99449) will become more common.

What this means for you: Do not rely solely on consult codes for your revenue. Build a practice that can thrive on office visit codes (99202-99205) and telehealth codes. Treat consult codes as a bonus, not a foundation.

Conclusion

We have covered a lot of ground.

To summarize in three lines: Use outpatient consult codes (99242-99245) only when another provider makes a formal request, you provide a written opinion, and you send a report back. For Medicare patients, always use office visit codes (99202-99205) instead. Document the request, your opinion, and the communication clearly to avoid denials and survive audits.

Billing for dermatology consults does not have to be a nightmare. It requires attention to detail and a clear understanding of the rules. But with the right documentation and a good workflow, you can capture the revenue you deserve for your expert opinion.

Keep this guide handy. Refer to it when you are unsure. And when in doubt, call the payer and ask one simple question: “Do you accept 99242?”