99213 vs 99214: When to Bill Each (2026 Examples and Documentation)

CPT 99213 and 99214 are the two most-billed evaluation and management codes in US healthcare. Together they account for the bulk of office and outpatient established-patient visits. The 2026 Medicare payment difference is roughly 40 dollars per visit (99213 pays around 95 dollars non-facility, 99214 pays around 135 dollars). For a primary care physician seeing 25 to 30 established patients a day, that 40 dollar gap multiplied across a year can be the difference between a six-figure annual revenue swing per provider. Bill 99214 when documentation only supports 99213 and you face downcoding, post-payment takeback, and pattern-of-conduct audits. Bill 99213 when 99214 was warranted and you give away earned revenue silently. The answer is not to push every visit toward 99214. The answer is to document accurately and select the level the chart genuinely supports under the 2021 E/M guidelines, which still govern in 2026.

The 2021 AMA E/M guideline overhaul fundamentally changed how 99202 to 99215 are selected. History and exam are no longer scoring elements. Code selection turns on either Medical Decision Making (MDM) or Total Time on the date of service. You pick whichever produces the higher level. MDM is determined by three elements: number and complexity of problems addressed, amount and complexity of data reviewed and analyzed, and risk of complications, morbidity, or mortality. Two of the three must meet the level you bill. Total Time captures everything you do for that patient on the date of service: pre-visit chart review, the encounter, ordering tests, documenting, coordinating care, communicating with the patient or family. Travel time and time spent on the day before or after the encounter does not count. For 99213, MDM must be Low OR total time must be 20 to 29 minutes. For 99214, MDM must be Moderate OR total time must be 30 to 39 minutes. Either path qualifies independently. You do not need both.

Element one is Number and Complexity of Problems Addressed. For 99213 (Low): one stable chronic illness, two or more self-limited or minor problems, or one acute uncomplicated illness or injury. For 99214 (Moderate): one or more chronic illnesses with exacerbation, two or more stable chronic illnesses, one undiagnosed new problem with uncertain prognosis, one acute illness with systemic symptoms, or one acute complicated injury. Element two is Amount and Complexity of Data Reviewed and Analyzed. Data is grouped into three categories: tests, documents, and independent historian; independent test interpretation; and discussion of management or test interpretation with another external healthcare professional. For 99213 (Low), one category must be met at minimal data level. For 99214 (Moderate), one of three combinations: any combination of three from category one, OR independent interpretation of a test, OR appropriate discussion with external clinician. Element three is Risk of Complications. For 99213 (Low): low risk of morbidity from additional diagnostic testing or treatment. For 99214 (Moderate): moderate risk, including prescription drug management, decision regarding minor surgery with identified patient or procedure risk factors, decision regarding elective major surgery without risk factors, or diagnosis or treatment significantly limited by social determinants of health. Two of three elements must meet the level. Get to two of three at Moderate, you bill 99214. Get to two of three at Low, you bill 99213.

If MDM does not get you to 99214, total time on the date of service might. The 2021 guidelines and CY 2026 CMS guidance keep these thresholds: 99213 requires 20 to 29 minutes total. 99214 requires 30 to 39 minutes total. Total time includes pre-visit prep (chart review, reviewing prior tests), the face-to-face visit itself, post-visit work (ordering labs and imaging, documenting the encounter, writing orders, coordinating with consultants, returning patient calls), and any other work you personally perform on that date for that patient. It does NOT include time on subsequent days, time spent by your staff (medical assistants, nurses), travel between sites, or time on activities not directly related to that patient's care that day. Documentation must include the actual time spent: a statement like 'Total time on date of service: 32 minutes including chart review, examination, treatment plan discussion, documentation, and ordering of follow-up labs.' Vague statements like 'spent additional time' fail audits. Specific time entries with what filled the time pass them.

Example 1: Established patient with stable hypertension on lisinopril returns for routine 3-month follow-up. BP 132/82, no symptoms, no medication changes, no new complaints. Brief discussion, refill prescription, return in 3 months. MDM: one stable chronic illness (Low), one category of data (review of prior labs), low risk (no Rx changes today, just continuation). Time: 18 minutes total. Bill 99213. Example 2: Established patient presents with acute uncomplicated UTI. Mild dysuria, no fever, no flank pain. UA in office shows nitrites positive. Prescribe nitrofurantoin, return if not better in 48 hours. MDM: one acute uncomplicated illness (Low), one category of data (independent interpretation of UA), low risk. Time: 22 minutes including documentation. Bill 99213. Example 3: Established patient with stable type 2 diabetes (A1c 6.8) and hypothyroidism (TSH 2.1). Both stable on current regimen, no changes needed. MDM: two stable chronic illnesses, but Risk is Low (no medication changes), Data is Low. Two of three elements at Low. Bill 99213 even though there are two chronic conditions.

Example 1: Established patient with poorly controlled type 2 diabetes (A1c 9.4 from 7.8 three months ago) plus new complaint of foot numbness for two weeks. Add gabapentin, increase metformin, order foot exam labs, refer to podiatry. MDM: one chronic illness with exacerbation (Moderate), one undiagnosed new problem with uncertain prognosis (the neuropathy could be diabetic or other etiology), prescription drug management (Moderate Risk). Three of three at Moderate. Bill 99214 even though time was only 25 minutes. Example 2: Established patient with hypertension and hyperlipidemia returns with new chest pain on exertion for the past week. Pain is non-radiating, occurs walking up two flights of stairs, resolves with rest. EKG in office is normal. Order stress test, start aspirin and atorvastatin titration, refer to cardiology, advise return for symptoms. MDM: undiagnosed new problem with uncertain prognosis (chest pain workup), independent interpretation of EKG, prescription drug management plus diagnostic workup. Three at Moderate. Bill 99214. Time was 38 minutes including documentation. Either path supports it. Example 3: Established patient with three stable chronic conditions (HTN, T2DM, asthma) plus new shoulder pain. Four problems addressed, but each is at the lower end. Time spent: 35 minutes including thorough exam, two prescription refills, ordering labs, ordering shoulder x-ray, documenting. The Time path supports 99214 even though MDM is borderline.

Mistake 1: Cloning. Copy-forwarding the prior visit's HPI, exam, and assessment into today's note without meaningful changes. Payer audit teams flag identical text across consecutive visits. The encounter is not credible if the documentation could describe any visit. Mistake 2: Vague time statements. 'Took some additional time' or 'extended discussion' without a specific time entry fails the Time path. Document an actual number: 'Total time on date of service: 33 minutes.' Mistake 3: MDM elements not visible in the assessment and plan. The MDM scoring requires the auditor to see your reasoning. If you addressed two chronic illnesses, both must appear in the assessment. If you reviewed external records, document what you reviewed. If you interpreted a test, document the interpretation. Mistake 4: Risk overstatement. Listing 'prescription drug management' for a refill of an existing stable medication is not Moderate Risk in CMS view. Moderate Risk means initiating, escalating, deescalating, or actively managing a medication. A pure refill without titration is Low Risk. Mistake 5: Missing the social determinants leverage. CY 2024 and 2026 guidance explicitly recognizes that diagnosis or treatment significantly limited by social determinants (housing instability, food insecurity, transportation barriers, limited health literacy) qualifies as Moderate Risk on its own. If you adjusted your treatment plan because of social factors, document it explicitly. That single element can move 99213 to 99214 legitimately.

Modifier 25 is the most-audited E/M modifier and the audit risk profile differs between 99213 and 99214 when paired with same-day procedures. Billing 99214 with modifier 25 alongside a minor procedure (joint injection, simple wound repair, lesion removal) draws more scrutiny than billing 99213 in the same scenario. Auditors use the rationale that if the procedure absorbed significant decision making, the residual E/M component should not have reached Moderate complexity. Successful 99214 plus modifier 25 documentation must show clearly that the E/M work addressed problems separate from the procedure indication. Best practice: structure the note with a distinct E/M section addressing problems unrelated to the procedure (medication review, chronic disease management, addressing other complaints) and a separate procedure note. Even better: use a separate timestamp and a clear sentence: 'After the above E/M evaluation was completed, the patient consented to and underwent [procedure]...' Documentation that visually separates the E/M from the procedure survives the modifier 25 audit. Documentation where the E/M elements bleed into the procedure rationale fails.

Major commercial payers including UnitedHealthcare, Anthem, Cigna, and several BCBS plans now run automated E/M downcoding algorithms that compare your billed E/M level against the documentation language detected in the chart and against population-level patterns of the same provider. Practices that bill 99214 at significantly higher rates than peers in the same specialty get flagged for pattern review. Practices that bill 99213 conservatively when 99214 is warranted lose revenue silently because the algorithm rarely upcodes; it only downcodes. This is asymmetric. The defense is the same on both sides: documentation that explicitly maps to the 2021 MDM elements or to a stated total time on the date of service. When the chart language matches the billed level, the algorithm passes the claim. When the chart language is vague, the algorithm downcodes by default. Practices that have moved to structured note templates aligned to MDM scoring see their downcoding rate drop within 60 to 90 days of the change.

Step 1: At the start of every visit, the provider should mentally tag the visit as 'simple/routine' or 'complex/active.' This pre-encounter classification primes the documentation pattern. Step 2: For complex/active visits, the assessment and plan should explicitly address each problem, the data reviewed for each, and the risk involved in the treatment decisions. Step 3: For visits where the Time path is the supporting argument, document the actual time at the bottom of the note with what filled the time. Do this contemporaneously, not retroactively. Step 4: Implement a coding query workflow when the documentation could support either level. The certified coder reviews and either accepts the provider's level or sends a brief query for clarification. Practices that implement coder-driven query workflows within 30 days of encounter see E/M coding accuracy improve to over 95 percent and audit findings drop to near zero. Step 5: Run a monthly variance report comparing your 99213 to 99214 ratio against MGMA benchmarks for your specialty. A primary care practice billing 99214 less than 30 percent of established visits is almost certainly under-coding. A practice billing 99214 more than 60 percent without complex case mix is almost certainly over-coding and inviting audit.

Our AAPC-certified coders specialize in E/M-heavy specialties: family medicine, internal medicine, pediatrics, behavioral health, and specialty practices with significant office visit volume. We pre-scrub every E/M claim against the documentation in the chart, query the provider when documentation does not match the billed level, and apply the optimal modifier strategy when same-day procedures are involved. Our clients average 99214 utilization aligned to specialty benchmarks (typically 35 to 50 percent of established visits) with audit findings under 1 percent. We monitor commercial payer downcoding patterns by client and surface trends within 30 days so providers can adjust documentation patterns before revenue impact compounds. Pricing starts at 2.49 percent of net collections. No setup fees. No long-term contracts. The math: a practice billing 1,000 established patient visits per month with current 99214 utilization of 25 percent and accurate coding utilization of 40 percent recovers roughly 6,000 dollars per month in earned but uncaptured E/M revenue. That recovery alone covers the entire billing service cost multiple times over.