A 34-minute follow-up visit gets billed as a 99213 more often than most practice owners would like to admit. The provider spends the extra time reviewing labs, adjusting a medication and talking through a new symptom, then the front desk or the EHR's default template drops the claim into the lower code out of habit. Multiply that by a few visits a day, five days a week and a practice can quietly leave a meaningful amount of revenue on the table over a year without anyone ever doing anything "wrong" on the clinical side.
The reverse mistake is just as common and arguably more dangerous: billing 99214 because the visit felt complex, without a note that actually supports moderate medical decision-making or 30-plus minutes of documented time. That's the version that shows up in a payer audit letter eighteen months later.
This guide walks through exactly how 99213 and 99214 differ, how CMS and commercial payers expect them to be documented, where the reimbursement gap actually lands in 2026 and the coding and denial patterns that trip up primary care, urgent care and behavioral health practices alike. Where it's useful, we'll point to the specific parts of the revenue cycle coding, claim submission, denial management where these two codes tend to cause the most friction.
What Are 99213 and 99214?
CPT codes 99213 and 99214 are both established patient office or outpatient evaluation and management (E/M) codes. They sit in the middle of the office-visit family, which runs from 99211 (minimal, often nurse-only visits) up to 99215 (high-complexity visits). Both codes require that the patient already has a relationship with the practice generally, they've been seen by the same physician or another provider of the same specialty and group within the last three years. If that condition isn't met, new-patient codes (99202–99205) apply instead and they carry different time and MDM thresholds entirely.
Since the American Medical Association's 2021 overhaul of the office/outpatient E/M guidelines a change CMS adopted for Medicare the same year the old approach of counting history bullet points, exam elements and review-of-systems items is gone for these codes. Code selection now comes down to one of two paths: total time spent on the date of the encounter, or the level of medical decision-making (MDM). That single shift is the reason so many practices are still coding this pair inconsistently years later; old habits from the point-counting era die hard.
99213 CPT Code Description
In plain terms, 99213 describes an office or outpatient visit with an established patient that involves low-complexity medical decision-making, or a total encounter time of 20 to 29 minutes on the date of service. It's built for the visits that make up the bulk of primary care and behavioral health medication-management schedules: a stable chronic condition being monitored, a minor acute complaint, a routine refill that doesn't require a treatment change.
Low MDM generally means one of the following is true: the provider is managing one stable chronic illness or two or more minor, self-limited problems; the data reviewed (labs, prior notes, imaging) is minimal; and the risk tied to the management decisions medications, tests ordered, next steps is low. Think stable hypertension on an unchanged regimen, a mild upper respiratory infection, or a well-controlled thyroid condition being monitored on schedule.
99214 CPT Code Description
99214 covers the same type of encounter established patient, office or outpatient setting but at a moderate level of medical decision-making, or a total time of 30 to 39 minutes. This is the code for visits where something is actively being managed rather than simply checked in on: a chronic illness that's flaring or not responding to the current plan, a new problem with an uncertain diagnosis, or two or more stable chronic conditions being addressed in the same visit.
Moderate MDM typically involves a more substantial data review ordering or independently interpreting multiple tests, reconciling outside records, or getting history from someone other than the patient paired with moderate risk from the management plan itself. Prescription drug management is the classic example: starting, stopping, or significantly adjusting a medication carries moderate risk under the CMS framework, which is a large part of why 99214 shows up so often in visits involving med changes.
What Is the Main Difference Between 99213 and 99214?
| Factor | CPT 99213 | CPT 99214 |
|---|---|---|
| Patient type | Established patient | Established patient |
| MDM level required | Low | Moderate |
| Total time (date of encounter) | 20–29 minutes | 30–39 minutes |
| Typical clinical picture | Stable chronic condition, or 2+ minor problems | Chronic illness with exacerbation, new problem with uncertain prognosis, or 2+ stable chronic conditions |
| Data reviewed | Minimal to limited | Moderate multiple tests ordered/reviewed, outside records, independent interpretation |
| Risk of management decisions | Low (OTC meds, minor treatment, no medication changes) | Moderate (prescription drug management, minor procedure with risk factors) |
| Approx. total RVUs (2026) | 2.85 | 4.06 |
| 2026 national Medicare non-facility rate* | ≈ $95 | ≈ $135 |
*National averages before locality adjustment (GPCI) and the annual conversion factor. Always confirm exact figures against the CMS Physician Fee Schedule Look-Up Tool or your specific payer contract rates vary by state, locality and plan.
The core takeaway: it isn't about how long the patient sat in the waiting room and it isn't about how many body systems got examined. It's about the complexity of the medical decision the provider actually made, or the time genuinely spent managing that decision on that date.
Time-Based vs Medical-Decision-Making Billing
One of the more persistent points of confusion even among coders who've been doing this for years is that time and MDM are two independent, equally valid paths to the same code. A practice doesn't need to hit both. It needs to clearly meet one of them and the documentation needs to make that obvious to anyone reviewing the chart later, including an auditor with no clinical context.
| Coding Path | 99213 Requirement | 99214 Requirement |
|---|---|---|
| By total time | 20–29 minutes spent by the billing provider on the date of the encounter (face-to-face and non-face-to-face work, e.g., chart review before the visit, care coordination after) | 30–39 minutes spent by the billing provider on the date of the encounter |
| By MDM | Low complexity: 1 stable chronic illness or 2+ minor problems; minimal data; low risk | Moderate complexity: exacerbated chronic illness, 2+ stable chronic illnesses, or a new problem with uncertain prognosis; moderate data; moderate risk |
| What the note must show | Either a specific time statement with activities performed, or an MDM narrative that maps to the complexity level | Same principle, higher threshold |
A word of caution on time-based billing: only time spent by the billing provider (physician, NP, or PA) on the actual date of the encounter counts. Prep work done the night before or documentation finished the next morning doesn't count toward that day's total, even if it's genuinely related to the same patient. This is one of the most common reasons a time-based 99214 gets downgraded on internal audit.
How Documentation Supports the Code
Good documentation doesn't need to be long it needs to be specific enough that someone who wasn't in the room can see why the code was chosen.
| Element | Supports 99213 | Supports 99214 |
|---|---|---|
| History/HPI | Brief, focused on the stable or minor issue | Detailed enough to reflect the exacerbation, new problem, or multiple conditions |
| Problem list | 1 stable chronic dx, or 2+ minor | Exacerbated chronic dx, 2+ stable chronic dx, or new problem w/ uncertain prognosis |
| Data reviewed | Minimal maybe a quick vitals check | Labs ordered/reviewed, imaging, outside records, or independent historian |
| Risk/plan | Continue current treatment, no med changes | Medication started/stopped/adjusted, risk factors discussed, referral for a new issue |
| Time statement (if billing by time) | "Total time: 20–29 minutes" plus the activities that made up that time | "Total time: 30–39 minutes" plus the activities that made up that time |
The most common gap in coding reviews isn't a missing exam it's a missing link between what's documented and the risk level claimed. "Continue current medications" supports 99213. "Increased lisinopril to 20mg due to elevated home BP readings, discussed side effects" supports 99214. Same visit length on paper, very different MDM.
Typical Use Cases for 99213
- Stable hypertension or hyperlipidemia, medication unchanged, routine monitoring
- Mild seasonal allergies or an uncomplicated upper respiratory infection
- Routine follow-up for a well-controlled chronic condition with no new complaints
- A minor acute issue (rash, minor sprain) with no diagnostic uncertainty
- Prescription refill visits where no dosage or medication change is needed
Typical Use Cases for 99214
- Diabetes with an elevated A1c requiring an insulin or oral agent adjustment
- A patient managing two or more chronic conditions simultaneously (e.g., hypertension and depression) in one visit
- A new symptom with an unclear cause that requires ordering labs or imaging
- Psychiatric medication management involving a dosage change, side-effect assessment and risk discussion common in practices that also bill add-on codes for psychiatric or PMHNP services
- A chronic condition that's worsening despite the current treatment plan
Common Reimbursement Differences
Based on 2026 national Medicare non-facility rates, the gap between the two codes runs roughly $40 per visit not dramatic on a single claim, but it compounds fast across a full patient panel. A provider seeing 15–20 established patients a day who habitually undercodes borderline 99214 visits as 99213 isn't losing a rounding error over the course of a year. The opposite mistake defaulting upward without documentation creates repayment exposure that can eventually cost more than it ever generated.
Commercial payers don't publish one universal rate the way Medicare does. Most contract at a percentage of the Medicare fee schedule or negotiate a flat per-code rate that varies by plan, region and specialty. Reimbursement policy varies by payer, so treat any national average as a benchmark for internal auditing, not a guarantee of what a specific claim will pay.
How to Choose the Correct Code
- Confirm the patient is established. Seen by the same provider or same-specialty colleague in the same group within the past three years.
- Check total time first if it's clearly documented. If the note states a specific total time and it falls cleanly in the 20–29 or 30–39 minute range, that's usually the fastest, most defensible path.
- If time isn't the driver, evaluate MDM independently. Look at the three MDM elements number and complexity of problems, amount of data reviewed and risk of the management plan and let the highest supported level (not the average) determine the code.
- Never let the EHR template pick the code by default. Smart phrases and cloned templates are a leading cause of both under- and over-coding, because they reflect what was typed last visit, not what happened this visit.
Common Coding Mistakes
- Billing 99214 based on visit length in the waiting room or total appointment slot, rather than provider time or MDM
- Treating "two chronic conditions mentioned" as automatically qualifying for 99214, without documenting that both were actively managed
- Copy-forwarding the previous note's assessment and plan verbatim, which erases any documentation trail for the current encounter's complexity
- Failing to note that time-based billing excludes work done outside the date of the encounter
- Confusing "new patient" and "established patient" status, especially when a patient switches providers within the same group
- Not distinguishing separately billable procedure work from the E/M service when both happen at the same visit
Common Denials
| Denial Reason | Root Cause | Prevention |
|---|---|---|
| Code level not supported by documentation | Note lacks MDM elements or a valid time statement | Use structured templates that force time or MDM documentation |
| New vs. established patient mismatch | Three-year rule not checked before coding | Verify patient history in the practice management system before code selection |
| Modifier 25 missing or unsupported | E/M billed same-day as a procedure without a distinct, documented E/M service | Document the E/M work separately from the procedure note |
| Medical necessity not established | Diagnosis codes don't align with the complexity billed | Tie ICD-10 selection directly to the MDM narrative |
| Frequency edits / duplicate billing | Same code billed too close together without clinical justification | Track visit cadence and flag rapid repeat billing for review |
Denials tied to code-level mismatches tend to resurface repeatedly for the same provider once a payer flags the pattern which is exactly the kind of recurring issue that a dedicated denial management and appeals process is built to catch and correct before it becomes a habit.
Modifier Usage
Modifier 25 is the one that matters most for this pair of codes. It's appended to the E/M code when a significant, separately identifiable evaluation and management service is performed on the same day as a minor procedure or another billable service. The audit risk here isn't the modifier itself it's using it as a reflex on every visit that includes a procedure, without documentation that actually shows two distinct pieces of work. A behavioral health example: billing 99214-25 alongside a psychotherapy add-on code like 90833 is appropriate only when the E/M time and the psychotherapy time are separately documented and don't overlap.
For telehealth encounters, 99213 and 99214 apply under the same time and MDM standards as in-person visits, with the added requirement of noting the audio/video modality and patient consent our guide on modifier 95 for telehealth billing covers the place-of-service and modifier pairing in more detail.
Medicare Billing Considerations
Medicare adopted the AMA's 2021 time/MDM framework directly, so the coding logic above applies as-is. The main Medicare-specific nuance is in add-on codes: G2211, the visit-complexity add-on for practices serving as the continuing focal point of a patient's care, is billable alongside 99202–99215. For time beyond the 99214 range, Medicare uses G2212 in 15-minute increments rather than the CPT 99417 code many commercial payers recognize.
Medicare Administrative Contractors also track each provider's E/M distribution against specialty benchmarks. A provider whose 99214 rate sits well above their MAC's regional average is more likely to be flagged for a targeted review not because the codes are automatically wrong, but because the pattern itself is a statistical trigger.
Commercial Insurance Considerations
Most commercial payers have aligned E/M documentation expectations with the same CMS framework, but specifics prolonged-service codes, telehealth parity, modifier 25 edits, pre-payment review thresholds vary by plan and sometimes by state mandate. A payer's special investigations unit (SIU) may apply stricter automated edits than Medicare on the same code pair. Because policy genuinely differs payer to payer, confirm current documentation and modifier requirements directly with each plan rather than assuming Medicare rules apply universally.
| Consideration | Medicare | Commercial Payers |
|---|---|---|
| Coding framework | 2021 AMA E/M guidelines, adopted directly | Generally mirrors AMA framework, with plan-specific nuances |
| Reimbursement basis | National conversion factor × RVU × locality GPCI | Contracted fee schedule, often a percentage of Medicare |
| Audit approach | OIG/CERT statistical outlier review by MAC region | Payer SIU audits, often triggered by claims-level edits |
| Prolonged service add-on | G2212 | CPT 99417 (varies by plan) |
Examples of Correct Coding
| Scenario | Total Time / MDM | Correct Code | Modifier |
|---|---|---|---|
| Stable hypertension, no med changes, refill only, 22 minutes documented | 22 min, or low MDM | 99213 | |
| Diabetes exacerbation, insulin dose increased, labs reviewed, 34 minutes documented | 34 min, or moderate MDM | 99214 | |
| Psychiatric medication management plus a separately documented 30-minute psychotherapy session | Distinct E/M complexity + separate 30-min therapy time | 99214 + 90833 | 25 on the E/M |
| Stable follow-up visit plus removal of a skin tag at the same encounter | E/M work distinct from procedure documentation | 99213-25 + procedure code | 25 |
Real Practice Scenarios
The habitual undercoder.
A family medicine group's internal audit found visits with 30+ minutes of documented time and clear medication adjustments were still routinely billed as 99213. The cause wasn't clinical coders defaulted to the "safe" lower code whenever unsure. A documentation checklist fixed it, not a coding overhaul.
The audit letter.
A solo internal medicine provider billed 99214 for most established-patient visits over 18 months, well above the specialty's regional average. A payer chart review found many notes lacked a time statement or a clear moderate-risk decision assessment and plan sections looked nearly identical visit to visit. The repayment demand followed not because the care was wrong, but because the documentation couldn't stand on its own.
The behavioral health pairing.
A psychiatric NP practice billed 99214 with a 90836 psychotherapy add-on but documented both services as one combined narrative. Payers denied the add-on for lack of a separately identifiable time block. Splitting documentation into a distinct E/M note and therapy note a pattern our psychiatry medical billing clients resolve quickly got both codes paying cleanly again.
Coding Tips for Better Reimbursement
- Document total time explicitly whenever it's the stronger path a single sentence ("Total time: 34 minutes, including chart review and counseling") can be the difference between a defensible 99214 and an assumed 99213
- Avoid copy-forwarding assessment and plan language between visits; even accurate content looks like a cloned note to an auditor
- When two chronic conditions are addressed, document the specific management action taken for each, not just that they were "reviewed"
- Train front-desk and coding staff to flag borderline visits for provider clarification rather than defaulting downward
- Periodically benchmark your practice's E/M code distribution against national or specialty averages before a payer does it for you
Compliance Checklist
- Established-patient status verified before code selection
- Documentation shows either a valid time statement or a complete MDM narrative
- Assessment and plan reflect the actual decision made that day, not boilerplate language
- Modifier 25 supported by a distinct, documented E/M service when billed with a procedure
- Medical necessity (ICD-10 selection) aligns with the complexity level billed
- Internal E/M distribution reviewed periodically against specialty benchmarks
- Behavioral health add-on codes (90833/90836/90838) documented with non-overlapping time from the E/M service
How Professional Billing Support Helps
Getting 99213 vs 99214 right consistently is a workflow problem, not a one-time training problem it touches coding, charge entry, claim submission and eventually A/R follow-up when it goes wrong. A pre-submission scrub checking specifically for time/MDM documentation gaps catches most of these errors before a claim ever reaches the payer, rather than fighting them in appeals months later.
For practices billing E/M codes alongside psychotherapy or medication-management add-ons psychiatry, PMHNP and outpatient behavioral health groups especially the documentation split between the E/M and add-on service is where revenue most often disappears quietly. Our work in psychiatry medical billing and outpatient behavioral health billing is built around exactly that code-pair scrutiny, alongside eligibility verification and payment posting that catch underpayments before they're buried in a batch remit.
Future Billing Updates for 2026
CMS's 2026 Physician Fee Schedule brought a positive conversion factor update 3.26% for most physicians and 3.77% for qualifying Advanced Alternative Payment Model participants which modestly raises the dollar value of both codes versus recent years. Adoption of the G2211 complexity add-on keeps growing as more practices realize it applies to a wider set of continuing-care visits than initially assumed. On the audit side, expect continued scrutiny of split/shared visits and of notes generated with ambient AI scribes the documentation standard doesn't change just because a tool assisted in writing it; time and MDM elements still need to be traceable to that specific encounter.
Key Takeaways
- 99213 requires low MDM or 20–29 minutes of total time; 99214 requires moderate MDM or 30–39 minutes
- Time and MDM are independent paths only one needs to be clearly met and documented
- The 2026 national Medicare reimbursement gap between the two codes runs roughly $40 per visit
- Cloned notes, missing time statements and modifier 25 overuse are the most common audit triggers
- Behavioral health practices pairing E/M codes with psychotherapy add-ons need clearly separated documentation for both services
- Payer policy varies always confirm specifics with Medicare's current fee schedule or the relevant commercial contract
Frequently Asked Questions
99213 requires low-complexity medical decision-making or 20–29 minutes of total time; 99214 requires moderate-complexity MDM or 30–39 minutes. The difference is in the complexity of the medical decision made, not the length of the appointment slot.
Under Medicare's national fee schedule, yes 99214 carries a higher RVU value and pays more. Under commercial contracts, the relative difference should hold, but exact dollar amounts vary by payer and negotiated rate.
Yes. If total time on the date of the encounter is clearly documented and falls within the code's range, that alone supports the code, regardless of MDM complexity, as long as the time is accurately recorded.
Either a time statement showing 30–39 minutes with a description of what filled that time, or an MDM narrative showing moderate complexity an exacerbated chronic condition, two or more stable chronic conditions being managed, or a new problem with an uncertain diagnosis, paired with moderate data review and risk.
If documentation doesn't support the higher level, the payer can deny the claim, request a refund after payment, or flag the provider for a broader audit if the pattern repeats across multiple claims.
Yes. Psychiatrists and psychiatric nurse practitioners commonly bill these codes for medication management visits, often paired with a psychotherapy add-on code like 90833 or 90836 when a separately documented therapy component is also provided.
Documentation that doesn't clearly support moderate MDM or 30+ minutes, missing or unsupported modifier 25 when billed with a procedure and medical necessity mismatches between the diagnosis and the complexity billed.
Both follow the same 2021 time/MDM framework, but they carry different RVU values, different reimbursement rates and Medicare tracks each provider's usage distribution against specialty benchmarks for audit targeting.
Moderate complexity generally an exacerbated chronic illness, two or more stable chronic conditions addressed in the visit, or a new problem with an uncertain diagnosis, combined with moderate data review and moderate risk from the management plan.
Build documentation templates that force a time statement or a complete MDM narrative, avoid copy-forwarding prior notes and periodically benchmark E/M coding distribution internally before a payer does it externally.
Yes, under current rules both codes apply to telehealth visits using the same time or MDM standards as in-person care, with the visit modality and patient consent documented and the correct place-of-service and modifier applied.
99215 requires high-complexity MDM or 40–54 minutes of total time, reserved for the most complex established-patient visits think uncontrolled conditions with a real threat to life or function, or decisions involving hospitalization.
Yes, the time and MDM criteria are identical regardless of provider type. What can differ is payer-specific reimbursement rates for NP/PA-rendered services, which sometimes pay at a percentage of the physician rate depending on the payer and state scope-of-practice rules.
Conclusion
99213 and 99214 look like a small distinction on paper a few minutes, a notch in complexity but they carry real consequences on both ends. Undercode consistently and a practice quietly funds its own revenue shortfall. Overcode without the documentation to back it up and that same practice is building an audit finding it doesn't know about yet. Getting it right isn't about memorizing a rule once; it's about a documentation habit that holds up whether the next reader is a biller, a provider six months from now, or a payer's audit team.
If your practice is finding that E/M coding accuracy, denial patterns, or behavioral health add-on pairing keep resurfacing as recurring headaches, it's usually a workflow gap rather than a knowledge gap and it's exactly the kind of thing a free A/R audit is built to uncover before it costs more than it needs to.