HIPAA Compliance in Physical Medicine Billing Services
August 6, 2026
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Email: info@prgmd.com | Call: +1 (833) 888-7725
Business hours: 8:00 to 5:00 | Monday to Friday
Current evaluation and management (E/M) guidelines place heavy emphasis on absolute compliance, precise time tracking, and rigid Medical Decision-Making (MDM) frameworks. Among these, CPT Code 99213 remains one of the most frequently used codes in outpatient medicine and, consequently, one of the most heavily scrutinized by payers. CPT 99213 is defined by the American Medical Association (AMA) as an outpatient evaluation and management (E/M) visit for an established patient. To bill this code accurately, the visit must meet specific medical decision-making complexity levels or meet strict cumulative time thresholds.
This exhaustive guide breaks down everything required to document, code, and defend your 99213 claims, covering 2026 Relative Value Unit (RVU) conversions, state-level fee variances, split/shared visit mandates, and specialty-specific clinical scenarios. In this blog, we’ll break down the appropriate use of 99213, reimbursement rules, common billing mistakes, and how partnering with a Medical Billing Service Company can improve accuracy and revenue.
To properly assign code 99213, the clinical encounter must fulfill the following base definitions established by the AMA:
Patient Status: Established (the patient must have received professional services from the physician/qualified healthcare professional, or another physician of the exact same specialty and subspecialty within the same group practice, within the past three years).
Reimbursement for CPT 99213 is based on its Relative Value Units (RVUs), which are divided into Work RVUs, Practice Expense (PE) RVUs, and Malpractice (MP) RVUs. These units are subjected to a geographic practice cost index (GPCI) and multiplied by the annual CMS Conversion Factor.
For 2026, the specific RVU allocation for CPT 99213 comprises:
Work RVU: 1.30
Practice Expense (PE) RVU (Non-Facility): 0.72 (Approximate average subject to final geographic adjustments)
Malpractice (MP) RVU: 0.09 (Approximate average)
Total Non-Facility RVU: ~2.11
Total Facility RVU: ~1.45 (Reflecting lower overhead expenses absorbed directly by the practice when operating inside an institutional environment)
Reimbursement calculations depend significantly on whether a provider participates in an Alternative Payment Model (APM):
APM Conversion Factor: $33.5675 per RVU
Non-APM Conversion Factor: $33.4009 per RVU
Because geographic adjustments alter the localized value of RVUs, the final allowable amount for CPT 99213 varies substantially across the country. The following scannable table provides the baseline 2026 non-facility Medicare allowable rates for 8 major states:
| State | Typical Locality | Estimated 2026 Non-Facility Allowable Rate |
|---|---|---|
| California (CA) | Los Angeles / SF | $96.50 – $101.20 |
| Texas (TX) | Dallas / Houston | $89.15 – $92.40 |
| Florida (FL) | Miami / Statewide | $88.90 – $91.60 |
| New York (NY) | Manhattan / NYC | $99.80 – $104.50 |
| Illinois (IL) | Chicago | $93.10 – $95.80 |
| Pennsylvania (PA) | Philadelphia | $90.50 – $93.00 |
| Ohio (OH) | Cleveland / Columbus | $86.75 – $88.90 |
| Georgia (GA) | Atlanta | $87.90 – $90.30 |
Providers have the choice to code an E/M visit via Time or via Medical Decision-Making (MDM).
When using time as the driving factor, you must count the total time spent on the date of the encounter. This includes both face-to-face and non-face-to-face time spent by the physician or qualified healthcare professional (QHP) on that exact calendar date.
CPT 99213 Time Range: 20 to 29 minutes must be spent and clearly documented.
Crucial Exception: If the total time reaches 30 minutes, the visit immediately crosses the threshold and must be billed as CPT 99214, provided documentation supports it.
Activities that count toward the cumulative time include:
Reviewing external records, tests, or histories prior to seeing the patient.
Obtaining or reviewing a separately obtained history.
Performing a clinically relevant exam or evaluation.
Counseling and educating the patient, family, or caregiver.
Ordering medications, tests, or procedures.
Documenting clinical information in the EHR on the date of the encounter.
If billing based on MDM rather than time, a CPT 99213 encounter requires a Low Level of Medical Decision Making. To satisfy a specific level of MDM, the clinical documentation must meet or exceed the requirements in at least two out of the three following core components:
1. Number and Complexity of Problems Addressed:
2. Amount and/or Complexity of Data to be Reviewed and Analyzed:
3. Risk of Complications and/or Morbidity or Mortality of Patient Management:
CPT 99213 is designed for established patient visits that involve a focused history, limited examination, and low-to-moderate decision-making complexity. Below are some real-world scenarios where this code is most appropriate.
A patient with hypertension who has been on medication for several months comes in for a scheduled follow-up. The provider reviews the patient’s blood pressure logs, performs a limited cardiovascular exam, and asks about adherence to lifestyle recommendations such as salt intake and exercise. Since the condition is stable and only minor medication adjustments are required, this visit represents low-complexity decision-making and is best billed under CPT 99213.
A patient with type 2 diabetes returns for their quarterly check-up. During the visit, the physician reviews blood glucose readings, examines lab results such as HbA1C, and checks the patient’s feet for early neuropathy signs. The provider discusses dietary habits and medication use, making small adjustments to treatment as needed. Because the condition is chronic but stable, this type of visit qualifies for CPT 99213.
An established patient who has been taking antidepressants reports new side effects, such as weight gain and difficulty sleeping. The provider collects a focused history of the symptoms, performs a brief exam, and discusses the relationship between the medication and the reported effects. Based on this evaluation, the physician may adjust the dosage or consider switching to another medication. This visit involves straightforward medical decision-making and is appropriately billed as 99213.
A patient presents with a sore throat, mild fever, and congestion that began two days ago. The provider reviews the patient’s recent health history, performs a focused examination of the throat and lymph nodes, and may run a rapid strep test. Based on the findings, the physician provides supportive care instructions or prescribes antibiotics if needed. This limited evaluation and treatment plan makes CPT 99213 the right code for this encounter.
A patient who fractured their arm several weeks ago returns for a follow-up appointment. The provider reviews the healing process using X-rays, checks for pain and mobility, and ensures that the cast is fitting properly. The physician also provides instructions on physical therapy or additional rest. Because the injury is healing as expected and the decision-making is relatively simple, this scenario aligns with CPT 99213.
A patient with generalized anxiety disorder comes in for a scheduled medication management visit. The provider discusses the patient’s current mood and symptoms, checks for side effects of the prescribed medication, and offers counseling on stress management. Minor dosage changes may be made depending on the patient’s progress. Since this is an ongoing management of a stable condition with low-to-moderate decision-making, it qualifies as CPT 99213.
Proper reimbursement depends on fulfilling all necessary requirements:
Complexity: The visit must involve moderate MDM.
Documentation: Medical records must include all components—history, exam, and MDM.
Time: Time may support code selection only if time-based billing is chosen.
Place of Service (POS): Typically reported with POS 11 (office setting). Using an incorrect POS can result in denials.
Note: You cannot bill 99213 alongside another E/M code for the same patient on the same day. Only the higher-level E/M code is reimbursed.
Despite being used frequently, coding 99213 is still often denied for various reasons. Therefore, below are some common errors that might cause a denial of the claim:
Billing CPT 99213 looks simple, but it requires attention to detail. Small mistakes can cause claim denials, payment delays, or even revenue loss for a practice. To bill this code correctly, providers and billing staff must make sure that the visit truly fits the rules for 99213. Below are some key points to keep in mind when using this code.
CPT 99213 is used only for established patients. This means the patient has already been seen by the provider, or by another provider in the same group and specialty, within the past three years. If the patient is new, then codes for new visits, such as 99203, should be used instead. Mistaking a new patient for an established one is a common error that can cause claims to be denied.
This code should be used only when the visit involves low to moderate decision-making. Examples include checking a stable chronic condition, treating a minor illness, or adjusting a long-term medication. If the visit requires complex decisions, review of multiple test results, or management of unstable conditions, then a higher-level code, such as CPT 99214, is more accurate. Choosing the right level is important to avoid undercoding or overcoding.
Strong documentation is essential when billing CPT 99213. The provider should record the patient’s history, the exam performed, and the medical decisions made during the visit. The notes should explain why the visit required the provider’s expertise and what steps were taken for the patient’s care. Incomplete or vague notes can cause problems if the claim is reviewed by payers. Clear documentation also protects the provider if questions arise later about the billed service.
CPT 99213 can also be billed based on time instead of decision-making. When a provider spends most of the visit on counseling or care coordination, the time spent can be the deciding factor. For this code, the total time usually falls between 20 and 29 minutes on the date of service. This includes both face-to-face time with the patient and non-face-to-face time, such as reviewing results, updating charts, or planning next steps. To bill this way, the provider must clearly document the time and how it was spent.
Both undercoding and overcoding are common risks with CPT 99213. Undercoding happens when a provider bills 99213 for a visit that should be billed at a higher level, such as 99214. This leads to loss of revenue. Overcoding happens when the provider bills 99213 for a visit that was too simple, which can cause audits and claim denials. The best way to avoid these issues is to make sure the code chosen matches the complexity and documentation of the visit.
Different insurance payers may have their own rules for billing evaluation and management codes. Some may require more detailed documentation, while others may review how often certain codes are used. Providers and billing staff should stay updated with these payer-specific rules to avoid unnecessary claim rejections. Regular internal reviews and staff training can also help keep billing accurate and compliant.
Code Type
Description
CPT Code
99213
Code Level
Level Three (Established Patient Visit)
Complexity
Moderate
Typical Duration
20-29 minutes
Services
Evaluation, diagnosis, treatment, counseling
When coding for visits of established patients, it is crucial to understand the differences between codes E/M 99212 through 99215. Each code indicates not only the time spent and the complexity of MDM but also how much of the history and examination has been documented.
99212– Low complexity; typically a straightforward issue with limited MDM.
99213– Moderate complexity; often used for chronic but stable conditions.
99214– Moderate-to-high complexity; new or worsening conditions requiring further management.
99215– High complexity; severe or unstable problems requiring significant coordination and decision-making.
Correct code selection should be based on MDM, time, and service documentation.
Code Type
Service Time
Rate
99212
10 minutes
$58.55
99213
15 minutes
$93.92
99214
25 minutes
$133.40
99215
40 minutes
$185.34
Modifier 25 is crucial for CPT 99213 coding because it signifies an additional, separate identifiable service provided on the same day as a procedure. For instance, if a patient receives an injection or a diagnostic procedure during the visit along with E/M services, Modifier 25 is necessary. This modifier clearly indicates that the visit required more work than what is typically included in the procedure. Therefore, proper use depends on clear documentation. In addition, the records must confirm that the E/M service was distinct and involved significant extra effort beyond the standard procedure.
Partnering with a medical billing company offers:
Expert knowledge of E/M coding and reimbursement updates
Fewer claim denials due to precise documentation and submission
Improved revenue cycle management
More time for providers to focus on patient care
Outsourcing ensures accuracy, reduces administrative burdens, and keeps your billing process compliant.
CPT 99213 is one of the most common billing codes used in outpatient clinics. Using this code correctly on claim forms, and making sure all documents are complete, can make a big difference in how fast and how much you get paid. As of January 1, 2026, Medicare pays between $57 and $95 for CPT 99213, depending on the location and type of facility.
Many doctors and clinics rely on Physicians Revenue Group, Inc. (PRG) for help with this process. Our certified coders make sure each CPT 99213 claim is coded the right way, backed with full documentation, and submitted without errors. This reduces denials and helps practices get their payments on time.
Keep in mind that CPT 99213 is only valid for established patients in an office or outpatient setting when the visit involves low-level decision-making. To support this code, providers must document three parts of the visit: a focused history, a focused exam, and a low-level medical decision.
CPT code 99213 is used for office or outpatient visits with established patients that require a moderate level of medical decision-making or 20-29 minutes of total time spent.
Frequent mistakes include insufficient documentation, incorrect time-based reporting, and improper use of modifiers, leading to claim denials or audits.
A professional medical billing company can ensure accurate coding, claim submissions, and denial management, maximizing reimbursement and reducing errors.
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