The 99213 CPT code looks simple, yet incorrect code selection can lead to undercoding, overcoding, documentation problems, and claim denials. Confusion often comes from outdated 15-minute references, medical decision-making requirements, modifiers, and reimbursement rules.
This guide explains CPT 99213 using current 2026 E/M guidance. You will learn when to use it, what documentation supports it, how time and MDM affect code selection, and how to bill it correctly.
What Is the 99213 CPT Code?
The 99213 CPT code represents an office or other outpatient Evaluation and Management (E/M) visit for an established patient. It requires a medically appropriate history and/or examination and a low level of medical decision making (MDM). When the provider selects the code based on time, the encounter requires 20–29 minutes of total physician or other qualified healthcare professional time on the date of service.
The American Medical Association (AMA) identifies a typical 99213 encounter as an established-patient office visit involving a stable chronic illness or an acute uncomplicated injury. However, the clinical situation alone does not determine the code. The documented work must support the selected E/M level.
99213 CPT Code Description at a Glance
Here is a quick reference for the most important CPT code 99213 requirements:
| Item | CPT 99213 |
|---|---|
| CPT code | 99213 |
| Category | Evaluation and Management (E/M) |
| Patient type | Established patient |
| Setting | Office or other outpatient |
| MDM level | Low |
| Time, when used for selection | 20–29 minutes |
| History/examination | Medically appropriate |
| Common use | Established-patient E/M visit |
A provider should report 99213 only when the service and documentation support this level. A diagnosis by itself does not automatically justify the code.
When Should CPT Code 99213 Be Used?
CPT 99213 may be appropriate when an established patient receives an office or outpatient E/M service that meets the requirements through low MDM or total time, depending on the method used to select the level.
For example, an established patient may return for evaluation and management of a stable chronic condition. If the work performed meets the current low-MDM requirements, 99213 may be appropriate even if the visit does not last 20 minutes.
Likewise, a provider can select 99213 based on total time when qualifying work reaches 20–29 minutes on the date of the encounter.
Therefore, coders should not select 99213 simply because the patient has a particular diagnosis or because the visit seems routine. Instead, review the documented MDM or qualifying total time and confirm medical necessity.
99213 Medical Decision Making Requirements
When a provider selects 99213 based on medical decision making, the encounter must support low MDM.
Current office and outpatient E/M coding focuses on three MDM elements:
| MDM element | What it evaluates |
| Problems addressed | Number and complexity of problems evaluated or managed |
| Data | Amount and complexity of data reviewed and analyzed |
| Risk | Risk of complications, morbidity, or patient management |
The code level depends on the applicable MDM rules rather than the length of the note. A long history or physical examination does not automatically support a higher E/M level.
According to the Centers for Medicare & Medicaid Services (CMS), history and physical examination no longer determine the level of most E/M visits. Instead, providers generally select the appropriate visit level based on medical decision making (MDM) or practitioner time, depending on the E/M service. Providers should still perform and document a medically appropriate history and physical examination when applicable, but these elements do not determine the visit level.
Example of Low MDM
Suppose an established patient returns for management of a stable chronic condition. The physician evaluates the condition, reviews relevant information, and continues appropriate management without factors that raise the encounter to moderate MDM.
If the documented problems, data, and risk meet the applicable low-MDM standard, 99213 may be appropriate.
However, coders should evaluate the actual encounter. A stable condition does not automatically mean every visit qualifies for 99213.
99213 Time Requirement: Is It 15 or 20 Minutes?
The current CPT 99213 time range is 20–29 minutes when the provider selects the E/M level based on total time.
You may still find websites and older materials that describe 99213 as a 15-minute visit. That information reflects older E/M terminology and should not be used as the current time requirement.
According to the American Medical Association (AMA), established-patient office or outpatient E/M codes follow specific total-time ranges when time is used to select the level of service. CPT 99212 covers 10–19 minutes, CPT 99213 covers 20–29 minutes, CPT 99214 covers 30–39 minutes, and CPT 99215 covers 40–54 minutes of qualifying physician or other qualified healthcare professional time on the date of the encounter.
Importantly, a provider does not have to spend 20 minutes with the patient when selecting 99213 based on MDM. The time range matters when time is the basis for code selection.
What Time Can Count Toward CPT 99213?
Qualifying physician or other qualified healthcare professional activities performed on the encounter date can include applicable work such as:
- Preparing to see the patient
- Reviewing relevant records or tests
- Obtaining or reviewing history
- Performing a medically appropriate examination or evaluation
- Counseling or educating the patient or caregiver
- Ordering medications, tests, or procedures
- Documenting clinical information
- Communicating and coordinating care when applicable
The provider should count only qualifying time under current E/M rules and should not double count time when another reported service already includes it.
Documentation Requirements for CPT Code 99213
Good documentation should show why the service supports 99213, not simply state the code.
The medical record should clearly describe the reason for the encounter, conditions addressed, relevant assessment, treatment or management decisions, and other information needed to support the selected MDM level.
When the provider selects 99213 based on time, documentation should support the qualifying total time on the date of service.
For MDM-based coding, the record should make the relevant problems, data, and management risk understandable. Providers should document the care they actually delivered instead of adding unnecessary information simply to make a note appear more complex.
Accurate documentation helps support medical necessity and gives coders stronger evidence when they review a claim.
How to Bill CPT Code 99213 Correctly
Start by confirming that the patient qualifies as an established patient and that the service belongs to the office or other outpatient E/M code family.
Next, determine whether MDM or total time supports 99213. Review medical necessity and make sure the documentation reflects the actual work performed.
Before submitting the claim, verify diagnosis coding, place of service, payer requirements, and any modifier that may apply. Do not add modifiers automatically.
Finally, monitor denials and payer responses. Recurring denials can reveal documentation, coding, eligibility, or payer-policy problems that need attention.
Practices that regularly handle E/M claims can also benefit from a broader medical billing and coding review to identify patterns that affect reimbursement.
Can CPT 99213 Be Billed With Modifier 25?
Yes. 99213 may be reported with Modifier 25 when the requirements for a significant, separately identifiable E/M service performed on the same day as another procedure or service are met.
However, the fact that a provider performed a procedure and an office visit on the same day does not automatically justify Modifier 25.
Centers for Medicare & Medicaid Services (CMS) explains that Modifier 25 may be appended to an E/M code when a significant and separately identifiable E/M service is appropriately reported with another procedure or service on the same date.
For example, a patient may arrive for one service but also require a separate medically necessary evaluation and management service that goes beyond the work normally associated with that procedure. If documentation supports both services, 99213 with Modifier 25 may be appropriate.
Incorrect Modifier 25 use can trigger denials or payment problems. Therefore, practices should document the separate E/M work clearly.
99213 CPT Code Reimbursement in 2026
There is no single universal reimbursement amount for CPT code 99213.
Actual payment can vary based on the payer, geographic locality, facility or non-facility setting, Medicare payment methodology, applicable RVUs, modifiers, and commercial payer contracts.
For Medicare claims, practices should verify current payment information through the applicable Medicare Physician Fee Schedule rather than relying on a fixed reimbursement figure published by a third-party website.
99213 RVU and wRVU
A Relative Value Unit (RVU) contributes to how Medicare values physician services. Payment calculations can account for components such as physician work, practice expense, and professional liability expense, along with geographic adjustments and the applicable conversion factor.
The work RVU (wRVU) specifically represents the physician work component. Practices should avoid treating an RVU or national payment estimate as a guaranteed amount because actual reimbursement can differ.
This distinction is particularly important when comparing facility and non-facility claims or evaluating payer contracts.
CPT 99212 vs 99213 vs 99214
One of the easiest ways to understand 99213 is to compare it with the adjacent established-patient E/M codes.
| Code | Patient | MDM Level | Time When Selected by Time |
| 99212 | Established | Straightforward | 10–19 minutes |
| 99213 | Established | Low | 20–29 minutes |
| 99214 | Established | Moderate | 30–39 minutes |
The main difference between 99213 and 99214 is the level of MDM or qualifying total time used for code selection. CPT 99213 represents low MDM, while 99214 cpt code represents moderate MDM.
Similarly, 99212 cpt code represents straightforward MDM, while 99213 requires low MDM when MDM determines the level.
Therefore, providers should never choose 99214 instead of 99213 simply because the higher code pays more. The documentation and circumstances of the encounter must support the reported level.
CPT 99213 Examples
Practical examples can make the coding requirements easier to understand. However, these examples are educational and do not replace review of the complete encounter.
Example 1: 99213 Selected by MDM
An established patient returns for follow-up of a stable chronic condition. The physician evaluates the patient’s status, reviews relevant information, and makes management decisions.
The documented encounter meets the applicable low-MDM requirements. In this case, the physician may report 99213 based on MDM even if the total encounter time is less than 20 minutes.
Example 2: 99213 Selected by Time
An established patient receives an office E/M service. The physician spends 24 minutes of qualifying total time on the date of the encounter, including relevant record review, evaluation, counseling, and documentation.
Because 24 minutes falls within the 20–29-minute range, 99213 may be selected based on time if all other applicable requirements are satisfied.
Common 99213 Coding and Billing Mistakes
One common mistake is using the outdated idea that CPT 99213 is simply a “15-minute office visit.” Current guidance uses a 20–29-minute range when selecting the code by time.
Another mistake is choosing 99213 based only on a diagnosis. Diagnosis alone does not establish the E/M level.
Practices should also watch for unsupported Modifier 25 use, incomplete time documentation, confusion between 99213 and 99214, incorrect patient status, and documentation that does not clearly support the reported MDM.
Finally, remember that 99213 is a CPT code, not an ICD-10-CM diagnosis code.
How to Reduce 99213 Claim Denials
Accurate coding starts before claim submission. Verify established-patient status, medical necessity, MDM or qualifying time, diagnosis coding, documentation, and payer-specific requirements.
When a modifier is necessary, confirm that the circumstances support it and that the medical record clearly demonstrates why.
Practices should also track recurring denial reasons. Regular coding and billing audits can reveal patterns that lead to lost revenue and help teams correct problems before they affect additional claims.
Final Takeaway
The 99213 CPT code applies to an established-patient office or outpatient E/M visit that supports low medical decision making or 20–29 minutes of qualifying total time when time determines code selection.
Correct billing depends on more than choosing the right number. Providers and billing teams should document medical necessity, follow current E/M rules, apply modifiers only when supported, and verify payer-specific requirements. Doing so helps produce cleaner claims, reduce avoidable denials, and support accurate reimbursement.
Last Reviewed: August 19, 2026
Coding and reimbursement requirements can change. Always verify current AMA CPT guidance, CMS requirements, and individual payer policies before submitting claims.
Frequently Asked Questions About CPT Code 99213
What does CPT code 99213 mean?
CPT 99213 represents an office or other outpatient E/M service for an established patient. It involves a medically appropriate history and/or examination and low MDM, or 20–29 minutes of total qualifying time when the provider selects the code based on time.
Is CPT code 99213 for a new or established patient?
99213 is an established-patient E/M code. New-patient office or outpatient visits use a different CPT code family.
How many minutes is CPT code 99213?
When the provider selects 99213 based on time, the current range is 20–29 minutes of total qualifying physician or other qualified healthcare professional time on the date of the encounter.
Is CPT 99213 still a 15-minute visit?
No. The current time range for 99213 is 20–29 minutes when code selection is based on time. References to a 15-minute 99213 visit generally reflect older E/M terminology or guidance.
What level of MDM is required for 99213?
CPT 99213 requires low medical decision making when MDM determines the E/M level. Coders evaluate the applicable elements involving problems addressed, data reviewed and analyzed, and risk of patient management.
What is the difference between 99213 and 99214?
99213 represents low MDM, while 99214 represents moderate MDM. When time determines the code, 99213 uses 20–29 minutes and 99214 uses 30–39 minutes.
Can 99213 be billed with Modifier 25?
Yes, when the provider performs and documents a significant, separately identifiable E/M service on the same date as another procedure or service and the applicable Modifier 25 requirements are satisfied.
How much does Medicare pay for CPT code 99213?
Medicare reimbursement for 99213 is not one fixed nationwide amount. Payment can vary according to geographic adjustments, site of service, current fee-schedule calculations, modifiers, and other factors. Check the current CMS Medicare Physician Fee Schedule for applicable payment information.
