CPT 90834 vs 90837: Which Pays Better? Key Differences

You sit down with a patient, and the session runs a little long, maybe 55 minutes instead of 45. That extra 15 minutes could mean a big difference in your paycheck. But which code actually pays better, 90834 or 90837? And is it always worth billing the longer one? We’ve compared the numbers, dug into payer rules, and talked to billing experts to give you the full picture. Here’s what you need to know to make the best choice for your practice and your patients.

1. CPT 90834 Definition , The 45‑Minute Therapy Session

CPT 90834 is the code for individual psychotherapy that lasts between 38 and 52 minutes. Most therapists think of it as the standard 45-minute session. It covers the bulk of routine therapy work, checking in, processing emotions, teaching coping skills. You can bill this code for face-to-face time with the patient, whether in person or via telehealth. Documentation should include start and end times, plus a note on the clinical focus of the session.

Our claims submission guide covers how to submit 90834 accurately. Many payers accept this code without prior authorization, but some commercial plans require it. Always verify benefits before the first session. Medicare allows around $113.90 for 90834, according to fee schedule data from elitemedfinancials.com. Private insurers typically pay between $100 and $175, depending on your contract.

One mistake we see often: therapists running 53-minute sessions but billing 90834. That’s undercoding. You’re leaving money on the table. If your session lasts 53 minutes or more, switch to 90837. The difference isn’t small.

2. CPT 90837 Definition , The 60‑Minute Therapy Session

CPT 90837 is for individual psychotherapy lasting 53 minutes or more. It’s the code for the 60-minute hour that many therapists actually deliver. According to research from MCM South’s blog on CPT 90837, this code is one of the most underutilized in mental health billing. Why? Therapists often downcode to 90834 out of habit or fear of denial. But 90837 pays significantly more.

Medicare’s allowed amount for 90837 is roughly $167, compared to $113.90 for 90834, a $53.10 difference for only 15 extra minutes of work. The per-minute rate actually increases from $2.53/min for 90834 to $2.78/min for 90837. That’s a counterintuitive payoff: longer sessions don’t just spread the same fee over more time; they pay a premium per minute.

Some private payers, like United Behavioral Health (UBH), require a separate authorization for 90837. Others may deny the code if you bill it too frequently without clinical justification. Always check your payer contracts. And remember: 90837 is for individual therapy only, not family or group sessions.

3. Direct Reimbursement Rate Comparison , Which Code Pays More?

The short answer: 90837 pays better. On average, Medicare reimburses $167 for 90837 versus $113.90 for 90834, a difference of $53.10. That’s a 46% increase for 15 extra minutes. Private insurance rates vary more, but 90837 consistently pays $30, $60 more per session than 90834.

Let’s put it in perspective. If you see 20 patients per week and all are eligible for 90837, switching from 90834 could add over $1,000 per week to your revenue, that’s more than $50,000 annually. For solo practitioners, that’s a game changer. Even if only half your sessions qualify, the extra income is significant.

But there’s a catch: not all payers pay 90837 at a higher rate. Some commercial plans have flat reimbursement for both codes, meaning you get the same fee regardless of session length. Always verify allowed amounts with each payer before assuming 90837 pays more. Also, some insurers require a modifier or special authorization.

According to Medicare.gov’s outpatient mental health coverage page, both codes are covered when medically necessary. The key is documentation, you must show that the longer session was clinically justified.

4. RVU Value Analysis , How Medicare Determines Payment

Medicare sets payment for psychotherapy codes using the Resource-Based Relative Value Scale (RVU). Each CPT code has three RVU components: physician work, practice expense, and malpractice. RVUs are multiplied by a conversion factor to get the payment. For 90837, the total RVUs are higher than for 90834, reflecting the additional time and intensity.

According to CMS data, the work RVU for 90837 is roughly 1.80, while 90834 is about 1.30. That means clinicians get more credit for the longer session. The higher RVU translates directly into higher payment. Even though the extra time is only 15 minutes, the RVU per minute is actually better for 90837, as we noted earlier.

Private insurers often use Medicare’s RVU as a baseline but negotiate lower multipliers. However, the relative difference between 90834 and 90837 usually holds. If your contract rates are based on a percentage of Medicare (e.g., 150% of Medicare), the increase for 90837 will be proportional.

Understanding RVUs helps you gauge which codes are undervalued. MCM South’s billing services include RVU analysis for your contracts, so you know exactly what each payer should be paying.

5. Documentation Requirements for 90834 vs 90837

Documentation is where most billing errors happen. For both codes, you need to record the start and end time of the face-to-face portion of the session. 90834 requires a minimum of 38 and maximum of 52 minutes. 90837 needs at least 53 minutes. Anything under 38 minutes should be coded 90832 (16, 37 minutes).

Beyond time, your clinical note must justify why the session length was appropriate. For 90837, explain what required the additional time, maybe the patient was in crisis, or you were processing trauma. For 90834, confirm that 45 minutes was sufficient. Payers may audit your records to check that time and content match the code.

Use an EHR that automatically timestamps your session start and end. That’s your best defense against audit. Also, avoid rounding up. If your session was 52 minutes, bill 90834, not 90837. Rounding up is a red flag for auditors.

For more on documentation, see our guide on patient insurance verification, which includes tips on recording session times accurately.

6. Payer Policies , When Insurers Deny 90837

Not all payers love 90837. Some insurers deny it if you bill it too frequently or if your documentation doesn’t clearly support the need for a longer session. United Behavioral Health (UBH) is notorious for requiring a separate authorization for 90837. Other payers, like some Blue Cross plans, may not cover 90837 at all, or they may pay it at the same rate as 90834.

We’ve seen Aetna in certain regions reimburse 90837 at the same rate as 90834, effectively eliminating the financial incentive. That’s a recent trend. As one YouTube creator noted, Aetna told a group of therapists that “60 minutes of your time is now worth the same as 45 minutes.” That’s a hole in your pocket you need to watch for.

Always check your payer contract before assuming 90837 pays better. If your allowed rate for 90837 is the same as 90834, you might as well bill 90834 and save the documentation burden. Or better, renegotiate your contract.

MCM South’s billing team handles payer outreach daily. We can help you verify your 90837 rates with each plan and appeal denials that come from incorrect fee schedule application.

7. Audit Risk , How to Protect Your Practice

Billing a lot of 90837 can trigger audits. Why? Because some payers see it as upcoding, charging for a longer session than actually delivered. To stay safe, maintain clear, consistent documentation. Every 90837 claim should have a note that mentions session length and clinical rationale. If you average 50 minutes but occasionally hit 53, stick with 90834 for those borderline sessions.

Another red flag: billing 90837 for every single patient, even when some sessions are clearly shorter. That pattern suggests you’re not really providing 53+ minutes each time. Auditors look for statistical outliers. Keep your mix natural. Some patients only need 45 minutes, use 90834 for them.

If you get audited, provide complete records. An auditor will review your start/stop times, treatment plan, and progress notes. If everything aligns, you’ll be fine. But inconsistency or missing data can lead to recoupment. Our article on dealing with Blue Cross includes tips on handling payer audits.

In terms of data security, ensure your billing software encrypts patient records. For cybersecurity compliance, consider resources like Advatek, which helps practices maintain HIPAA-compliant systems.

8. Clinical Decision‑Making , When to Use 90834 vs 90837

Choosing between 90834 and 90837 should be based on clinical need, not just reimbursement. If your patient requires a full 60 minutes, say for trauma work, EMDR, or crisis intervention, then 90837 is appropriate. If the session is routine check-in and skill building, 45 minutes often suffices.

But here’s the reality: many therapists routinely schedule 50- or 53-minute sessions but bill 90834 out of habit. That’s undercoding. If your typical session is 53+ minutes, you should bill 90837. The clinical need is implicit, you’re choosing to schedule that amount of time because you know the patient benefits from it.

One study from Wikipedia’s page on psychotherapy notes that longer sessions can improve outcomes for certain modalities. Let that guide you. If you’re doing EMDR, for example, 90 minutes is standard, so you’d use 90837 plus possibly an add-on if prolonged codes were still available (but they’re not, more on that later).

For family therapy or crisis sessions, different codes apply (90847, 90839). Don’t use 90837 for those. Keep individual therapy codes for individual sessions only.

9. Impact of Prolonged Code Removal , Why 90837 Matters More Now

As of January 1, 2023, the prolonged session codes 99354 and 99355 were deleted. Previously, you could use those codes to bill for sessions over 90 minutes. Now, there’s no CPT code for 75-minute or 90-minute individual therapy beyond 90837. That means if you regularly see patients for 90 minutes, you can only bill 90837, and you won’t get paid for the extra time.

This change makes 90837 even more critical. Previously, a 90-minute EMDR session would be billed as 90837 (60 min) + 99354 (first 30 min extended). Now you only get one 90837 per day, regardless of session length. So maximizing 90837 for every qualifying session is essential.

If you offer longer sessions, consider adjusting your schedule to 60-minute slots, or else accept that you’ll be undercompensated for the extra time. Some therapists have shifted to 53-minute sessions to maximize the 90837 window. Others offer 45-minute sessions and use 90834. The removal of prolonged codes forces you to be more intentional about session length.

10. Financial Impact for Solo Practitioners , Revenue Difference

Let’s do the math. A solo therapist seeing 25 patients per week, with 20 eligible for 90837 (others are intakes or shorter sessions). If you currently use 90834 for all, you’re leaving money on the table. At a $53.10 difference per session, switching 20 sessions to 90837 adds $1,062 per week, or over $55,000 per year (assuming 52 weeks). That’s a significant boost to your practice income.

Of course, this assumes all payers accept 90837 at the higher rate. Some may not. But even an average increase of $40 per session adds $800 per week, still over $40,000 annually. That could pay for a new EHR, marketing, or even a part-time biller.

But don’t forget the cost of extra time. You’re spending 15 more minutes per session. That’s 5 extra hours per week if you see 20 patients. Make sure you’re not burning out. The extra revenue should feel worth the additional work. Also, consider patient satisfaction, some may prefer shorter sessions. Balance is key.

If you’re unsure which codes to bill, our comparison of 90834, 90837, and 90847 can help you decide which code fits your patient mix.

11. Strategies to Maximize Reimbursement , Add‑on Codes and Modifiers

To get paid more for 90837, follow these steps. First, check each payer’s policy. Some require a prior authorization for 90837, especially UBH. Get that in place before billing. Second, use the correct modifiers: for telehealth, add modifier 95; for crypsis or other special circumstances, check payer guidelines. Third, consider add-on codes like 90785 (interactive complexity) if you provide feedback to family or coordinate care. That code adds about $30, $40 extra per session.

Bundling is another tactic. If you provide psychotherapy and medication management on the same day, you can bill 90837 along with an E/M code (like 99213) with modifier 25, as long as the services are separate and documented. That can boost per-visit revenue substantially.

Also, review your fee schedule annually. If payers haven’t increased rates in years, you may be underpaid. Negotiate better rates using data from other contracts. Our patient insurance verification guide includes tips on checking allowed amounts.

For a deeper look at pricing models for billing software, check out Donely.ai’s comparison of multi-instance pricing models, which can help you understand the economics of SaaS tools you might use.

12. Payer‑Specific Nuances , Medicare, Medicaid, and Commercial Plans

Medicare is straightforward: both codes are covered, and 90837 pays better. But Medicare has a frequency limitation, you can only bill 90837 once per day per patient. Medicaid varies by state. Some states pay a flat rate for therapy regardless of code, making 90837 irrelevant. Others follow Medicare’s lead.

Commercial plans are the wildcard. Aetna, Anthem, Cigna, UnitedHealthcare, and Blue Cross all have their own rules. Some pay 90837 at the same rate as 90834, as we mentioned. Others require a modifier or diagnosis code to justify the longer session. Always verify benefits before assuming.

One strategy: call the payer’s provider line and ask, “What is my contracted rate for 90834 and 90837?” Write it down. If they pay the same, consider billing 90834 for simplicity unless clinical need drives longer sessions. If they pay more for 90837, educate your patients that sessions may be 60 minutes to get the best care.

For Medicare, also note that beneficiaries may have coinsurance for both codes. Factor that into patient financial responsibility. MedicareOnVideo’s guide to dental insurance for seniors, while not directly about mental health, illustrates how seniors’ coverage options can affect their out-of-pocket costs.

13. Case Study , How a Solo Practice Switched to 90837

Imagine a solo therapist, let’s call her Dr. L, who ran a private practice seeing 30 patients per week. She always billed 90834 for individual sessions, even when they ran 55 minutes. She thought 90837 would trigger audits. After consulting with a billing specialist, she learned she was leaving about $1,200 per week on the table.

She started scheduling 53-minute sessions and documenting start/end times meticulously. She verified her top payers’ policies: Medicare paid $167 for 90837, Blue Cross paid $145 (versus $100 for 90834), and Aetna paid a flat $90 for both, so she continued using 90834 for Aetna patients. Within three months, her revenue increased by 18% without seeing more patients. She used the extra income to hire a part-time biller.

Key lesson: switching codes requires payer-specific research. Not all payers reward 90837. But for those that do, the financial impact is substantial. MCM South’s verification service can help you identify which payers pay more for 90837.

14. Case Study , Group Practice Balancing Both Codes

A group practice with eight therapists, all seeing a mix of patients, decided to standardize session lengths: 45 minutes and 60 minutes. They trained clinicians to ask patients at intake what duration they preferred, then scheduled accordingly. Some patients wanted 45-minute sessions for routine support; others needed 60 minutes for deeper work.

The billing team audited time records monthly. They found that 60-minute sessions were being undercoded about 30% of the time. After retraining, 90837 usage increased, and revenue per therapist rose by about $15,000 annually. The practice also faced fewer denials because documentation was consistent.

One pitfall: a few therapists felt pressure to keep patients longer just to bill 90837. The practice addressed this by emphasizing clinical judgment, if 45 minutes is enough, use 90834. The key is accurate coding, not maximizing every minute.

If you run a group practice, consider periodic coding audits to catch undercoding or overcoding. Our article on deductibles includes useful patient financial scenarios that affect your revenue.

15. Technology Tips , Using Clearinghouses and Claim Scrubbing

To get paid faster for 90837 and 90834, use a clearinghouse that scrubs claims for errors. A good clearinghouse will check CPT code validity, modifier usage, and payer-specific edits before submission. Some even auto-correct common mistakes. This reduces rejections and speeds up payment.

Your EHR should integrate with the clearinghouse. Many EHRs like TherapyNotes, SimplePractice, or Kareo have built-in claim submission. But we recommend a separate clearinghouse for deeper scrubbing, like Availity or Claim.MD. If you use telehealth, ensure your clearinghouse handles modifier 95 correctly.

Also, set up automated eligibility verification. That way you know a patient’s benefits before the session. If their plan doesn’t cover 90837, you can adjust. Our team at MCM South uses revenue cycle management tools that flag potential issues early.

For practices handling their own billing, a denial management module is essential. It tracks why claims are denied and generates appeal letters. Our post on crisis code 90839 explains how technology helps with code-specific denials.

16. Denial Management , How to Appeal 90834 or 90837 Rejections

Denials happen. Common reasons for 90834/90837 rejections: incorrect time documentation (e.g., session length doesn’t match code), missing prior authorization (especially for 90837 with UBH), or policy says 90837 is not covered. Always check the denial code. If it’s a contractual issue, you may need to renegotiate rather than appeal.

To appeal, gather your session notes showing start/end times, the treatment plan rationale for the session length, and any authorization numbers. Write a clear letter stating why the code is appropriate. Most payers have an online appeal portal. Follow up within 30 days. If the denial is for a medical necessity reason, provide clinical evidence.

Our denial management service handles this for you. We track every rejection and resubmit with the correct information. Over 86% of denials are avoidable, according to industry data. So often a simple fix, like adding a modifier or correcting the time, gets the claim paid. Our guide on 90847 includes denial patterns we’ve seen for family therapy codes.

18. Time-Based Documentation: Recording Arrival and End Times to Defend Your Code

Here’s a principle that surprises a lot of clinicians: the CPT code follows the clock, not the other way around. The patient’s arrival time and the session-end timestamp recorded in your progress note are the legal backbone of whatever code you bill. Whether a session lands on 90832, 90834, or 90837 is determined entirely by the documented face-to-face minutes. You don’t pick 90837 and then make the time fit, you record the actual time and let it dictate the code. This is the heart of how to document session start and end time for CPT 90837 in a way that holds up.

So what arrival time should you record in therapy progress notes for 90834 and 90837? Capture the real clock data, not a default block. To meet the time-based documentation requirements for psychotherapy CPT codes, every note should contain the following:

• Patient arrival time , when the patient physically arrived or logged into the telehealth session.
• Session start time , when the face-to-face clinical work actually began (this can differ from arrival if there was a wait or paperwork).
• Session end time , when the clinical interaction concluded.
• Total face-to-face minutes , the calculated duration that determines the code (38–52 minutes → 90834; 53+ minutes → 90837).
• A brief clinical rationale for the session length , one or two sentences explaining why that amount of time was clinically warranted.

Let’s make this concrete with a quick contrast. A note that survives an audit reads something like: “Patient arrived 2:00 PM. Session start 2:05 PM, session end 3:00 PM. Total face-to-face time: 55 minutes. Extended time required to process acute grief reaction and complete safety planning. Billed 90837.” An auditor can match the timestamps to the code in seconds, the math is clean and the rationale is present.

Now compare a note that gets recouped: “Saw patient for session today, addressed anxiety. 90837.” There’s no arrival time, no start or end timestamp, no total minutes, and no rationale for why a 53+ minute code applies. On audit, that claim has nothing to stand on, the payer simply assumes the higher-level code was unsupported and demands the money back.

That’s the rule to internalize: no timestamp, no defense. As we covered in the audit-risk section, payers look for patterns and outliers, but when they pull an individual chart, the very first thing they check is whether the documented time supports the billed code. If the minutes aren’t written down, it doesn’t matter how long the session truly ran, you can’t prove it after the fact. Recording arrival, start, end, total minutes, and a short rationale in every single note is the cheapest insurance you can buy against recoupment, and it costs you about fifteen seconds per chart.

17. Comparison Table , Quick Overview of Key Differences

Use this table as a quick reference when scheduling. If your typical session runs 53 minutes or more, and the payer covers 90837 at a higher rate, go for it. Otherwise, stick with 90834.

Conclusion

So which pays better, 90837 or 90834? For most payers, 90837 wins. It pays more per session and more per minute. But it’s not always the right choice. You need to check your contracts, document thoroughly, and consider patient needs. Switching to 90837 where appropriate can boost your practice revenue by tens of thousands of dollars each year.

At MCM South, we specialize in mental health billing. We help therapists like you handle payer rules, optimize code selection, and manage denials. Whether you’re a solo practitioner or a group practice, we speak insurance so you don’t need to. Reach out to learn how we can help you increase your reimbursement, both for 90834 and 90837.

Remember: billing correctly isn’t just about money. It’s about getting fair compensation for the excellent care you provide. You deserve to be paid what you’re worth.

Frequently Asked Questions

What is the main difference between CPT 90834 and 90837?

The main difference is session length. 90834 covers individual therapy sessions lasting 38 to 52 minutes, typically the 45-minute hour. 90837 covers sessions of 53 minutes or more, the 60-minute hour. You must choose the code based on the actual face-to-face time spent with the patient, documented with start and end times.

Does Medicare pay more for 90837 than for 90834?

Yes. Medicare’s allowed amount for 90837 is approximately $167, compared to $113.90 for 90834, a $53.10 difference for only 15 extra minutes. The per-minute rate is also higher for 90837 ($2.78 vs $2.53). This makes 90837 the better-paying code under Medicare, assuming your session qualifies length-wise.

Can I bill 90837 for a 50-minute session?

No. The minimum time for 90837 is 53 minutes. If your session is 50 minutes, you must bill 90834 (38, 52 minutes). Rounding up is considered upcoding and can trigger audits. Always document exact start and stop times to support the code you choose.

What happens if I always bill 90837 when my sessions are actually 45 minutes?

That’s upcoding and it’s fraudulent. Payers may audit your claims and demand recoupment of overpayments. You could also face fines or exclusion from insurance panels. Always code honestly based on the actual time spent. If you regularly run short, stick with 90834.

Why do some private insurers pay the same for 90834 and 90837?

Some insurers have negotiated flat rates for therapy codes, especially in certain regions. Aetna, for example, has been known to reimburse both codes at the same amount. This reduces the incentive to use 90837. Check your fee schedule annually. If your contract doesn’t differentiate, consider renegotiating or billing 90834 for simplicity.

How can I maximize revenue with CPT 90837?

First, verify that your major payers pay more for 90837. If they do, schedule sessions to be at least 53 minutes. Document thoroughly with start/end times and clinical justification. Use add-on codes like 90785 when appropriate. Consider telehealth where applicable, and ensure you have prior authorization where required.

Is prior authorization required for 90837?

It depends on the payer. United Behavioral Health (UBH) often requires a separate authorization for 90837. Other insurers like Medicare generally do not. Always check with each payer before billing. Failure to obtain prior authorization when required will result in a denial that may be difficult to overturn.

Can I use 90837 for family therapy or crisis sessions?

No. 90837 is for individual psychotherapy only. For family therapy with the patient present, use 90847. For crisis sessions (first 60 minutes), use 90839. Using the wrong code for the type of service can lead to denials and audits. Stick to individual therapy coding for 90834 and 90837.