CPT 99284E&M

Emergency dept visit mod mdm

CPT code 99284 represents an emergency department visit for a problem of moderate severity requiring moderate medical decision-making. This is the second-highest level ED visit, used when a patient's condition is serious but not immediately life-threatening.

Showing rates for

National Average

Base Medicare rate

$116.45

This calculator gives a typical-case estimate using standard Medicare modifier rules. Actual payment depends on payer policies, documentation, code-specific CMS status indicators, and locality. Verify before billing.

RVU breakdown

Work RVU

2.74

PE RVU (NF)

0.57

MP RVU

0.29

Total RVU

3.6

Conversion factor: 32.3465 · Source: CMS MPFS RVU25A · Confidence: High

NCCI bundling edits

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Billing tips

Document all three MDM elements (problems, data, risk) but only TWO of the three must meet moderate level to support 99284
Impact: Prevents downcoding to 99283 which pays approximately $40-50 less; proper MDM grid documentation can protect $40+ per encounter
Specifically document prescription drug management as a moderate risk factor when applicable, as this alone can elevate MDM to moderate level
Impact: Single documentation element can justify 99284 over 99283, protecting $40-50 in reimbursement per encounter
Include time spent on date/face of encounter when documentation is borderline for level selection, as prolonged services codes may be separately billable
Impact: Enables billing 99417 for time beyond the typical encounter if total time exceeds thresholds, adding $46+ per 15-minute increment
Use modifier 25 consistently when performing procedures (laceration repair, joint injection, etc.) on the same encounter
Impact: Preserves the full $116.45 E/M payment that would otherwise be bundled; failure to append results in 100% loss of E/M reimbursement
Ensure facility E/M level matches professional billing level to avoid payer audits and downcoding
Impact: Level mismatches trigger automated audits and can result in retrospective downcoding of 10-30% of claims
Document independent historian, external record review, or discussion with external provider to meet data credit requirements
Impact: Two data elements meet moderate level for data category; inadequate documentation may trigger downcoding worth $40-50 per claim

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Frequently asked questions

What is the Medicare reimbursement rate for CPT 99284 in 2025?

The 2025 Medicare national average payment rate for CPT 99284 is $116.45 for both facility and non-facility settings. This is based on 3.6 total RVUs multiplied by the 2025 conversion factor of $32.3465. Actual payment may vary by geographic locality based on the GPCI adjustments for your specific area.

What RVU value is assigned to CPT 99284?

CPT 99284 has a total RVU value of 3.6 for 2025, consisting of 2.74 work RVUs, 0.57 practice expense RVUs, and 0.29 malpractice RVUs. The facility and non-facility PE RVU values are the same at 0.57 because emergency department services are inherently facility-based.

What is the difference between CPT 99284 and 99283?

CPT 99284 requires moderate medical decision-making while 99283 requires low medical decision-making. The difference typically involves more complex problems (multiple chronic conditions or acute complicated injury vs. simple acute problems), more data review (labs, imaging, external records), or higher risk management (prescription drug therapy, specialist consultation). The payment difference is approximately $40-50, with 99284 paying $116.45 versus approximately $75 for 99283.

Can you bill CPT 99284 with a procedure code?

Yes, you can bill CPT 99284 with a procedure code when a separately identifiable E/M service is performed beyond the typical pre- and post-procedure work. You must append modifier 25 to the 99284 code and document the separate E/M service clearly. Common scenarios include laceration repairs, fracture care, abscess drainage, or foreign body removal where significant evaluation was needed to assess the patient's overall condition beyond the procedure indication.

How do you determine if a visit qualifies for 99284 versus 99285?

99284 requires moderate MDM while 99285 requires high MDM. High MDM typically involves at least two of: (1) one or more chronic illnesses with severe exacerbation or threat to life/bodily function, (2) extensive data review including independent interpretation of tests or discussion with external providers, or (3) high risk such as drug therapy requiring intensive monitoring or emergency major surgery. If the patient's condition involves potential threat to life or bodily function, 99285 is usually more appropriate than 99284.

What documentation is required to support CPT 99284?

Documentation must support moderate medical decision-making by demonstrating at least TWO of three elements at moderate level: (1) multiple problems with moderate complexity or one chronic illness with exacerbation, (2) moderate data such as review of external records, independent interpretation of tests, or ordering of unique tests, or (3) moderate risk such as prescription drug management or decision regarding minor surgery. A medically appropriate history and exam based on clinical judgment are also required, along with assessment and plan.

Is time a factor in billing CPT 99284?

No, time is not a factor in selecting CPT 99284. Emergency department E/M codes 99281-99285 are selected based solely on medical decision-making complexity under the 2021 E/M guidelines. These codes do not have typical time values assigned. However, you should still document total time spent on the date of encounter, as prolonged services code 99417 may be separately billable if time is extensive and documented appropriately.