CPT Code 99213 Explained: Cost, Guidelines, and Use Cases

CPT code 99213 is an established patient office or outpatient evaluation and management (E/M) code used for visits requiring a low level of medical decision making. It is typically billed for routine follow-up visits involving stable chronic conditions, minor acute complaints, or medication management with limited complexity. This code is commonly used in primary care and outpatient specialty settings for problem-focused visits that do not meet the higher requirements of CPT 99214.

What Is the Description of CPT Code 99213?

99213 CPT code description from the American Medical Association states: “Office or other outpatient visit for the evaluation and management of an established patient, which requires a medically appropriate history and/or examination and low level of medical decision making.”

How Much Time is Required for CPT Code 99213?

CPT code 99213 requires 20 to 29 minutes of total time spent on the date of the encounter when selected on a time basis. This total time includes both face-to-face and non-face-to-face work performed by the reporting clinician on the same calendar date.

What are the Modifiers for CPT Code 99213?

CPT code 99213 may be reported with modifiers to indicate special circumstances.

Modifier 25: Significant, Separately Identifiable E/M

Modifier 25 is used when a significant, separately identifiable E/M service is performed on the same day as a procedure. Document why the E/M is above and beyond the procedure work and include a distinct history, exam, and assessment. Do not use 25 to justify routine pre/post procedure work.

Modifier 24: Unrelated E/M During Post-Op Period

Modifier 24 is used when an E/M service is unrelated to a recent surgery during the global postoperative period. State clearly why the visit is not routine postoperative care and link the E/M to a diagnosis unrelated to the prior surgery.

Modifier 95: Synchronous Telehealth

Modifier 95 is used when CPT code 99213 is provided via real-time interactive audio-video telehealth. Document patient consent, the telehealth platform, and that the required history/exam/MDM (or time) were completed during the synchronous encounter.

Which Documents Are Required For CPT Code 99213?

Documentation must support the low level of MDM or the 20 to 29 minutes of total time, and tie the clinical work to the billed code.

• Focused chief complaint and HPI with interval change.
• Relevant review of systems and problem-focused physical exam findings.
• Medical decision-making notes: problems addressed, data reviewed/ordered, and risk of complications OR total time on date of service.
• Orders and results (labs, imaging, studies) documented and reviewed.
• Treatment decisions, prescriptions, and care coordination or referrals.
• Procedure notes and consent if a same-day procedure was performed.
• Provider signature, credentials, and dated timestamps (include total minutes or start/stop times if billing by time).

What Are Example Clinical Scenarios or Use Cases for CPT Code 99213?

CPT code 99213 is used for established-patient visits with low medical decision making or 20 to 29 minutes of total time.

Scenario 1: Stable hypertension medication follow-up

ICD-10: I10 (Essential [primary] hypertension).

Patient returns for BP check after recent med adjustment with interval home BP log review and a single medication change. The encounter involves a focused exam, simple data review, and a low-complexity management decision consistent with 99213.

Scenario 2: Upper respiratory infection, uncomplicated

ICD-10: J06.9 (Acute upper respiratory infection, unspecified).

Patient presents with sore throat, congestion, and normal vitals; clinician performs focused exam, provides symptomatic treatment, and documents return precautions. Limited diagnostic testing and a straightforward treatment plan meet low MDM criteria for 99213.

Scenario 3: Medication management for chronic hypothyroidism with abnormal TSH

ICD-10: E03.9 (Hypothyroidism, unspecified).

A follow-up visit that results in an active change to thyroid replacement dose after review of abnormal TSH fits 99213 when documentation shows focused history, targeted exam, data review, and treatment modification.

What is the Cost of CPT Code 99213?

Reimbursements for the code CPT code 99213  can vary significantly depending on factors such as Medicare fee schedules, commercial payer contracts, place of service (POS), and more. 

; the code’s work RVU is 1.30.
Medicare payment is calculated from the code’s RVUs × conversion factor and then adjusted by locality GPCIs. (WeekdayDoc)

RVUs & Medicare Payment

Work RVU (wRVU) for CPT code 99213 code is 1.30 while the typical total RVUs (non-facility) is around 2.7 to 2.8. This leads to Medicare’s national baseline in 2026 of approximately $90 to $95 (non-facility).

Commercial Payers

Commercial allowed amounts vary by contract but commonly run around 120% to 170% of Medicare. For 99213, that typically implies around $110 to $165 in many markets. Actual allowed amounts depend on insurer, network status, and provider negotiation.

Place-of-Service & Geographic Adjustments

Place-of-service and geographic practice cost indices materially change payment. Office (non-facility) rates are higher than facility/clinic rates, and local GPCIs raise or lower the national amount. Examples from public PFS summaries show non-facility national rates for 99213 in the low-$90s versus facility national rates in the $55 to $66 range. 

What Are the CPT Code 99213 Rules To Ensure Successful Reimbursement?

Adhere to documentation, bundling/NCCI, units/MUE, and frequency rules required by payers. Keeping records that directly link clinical work to the billed code 99213 ensures accurate reporting and proper reimbursement, highlighting the importance of CPT codes and insurance billing.

Bundling / NCCI / Same-Day Procedure Rules

Verify NCCI edits and global period rules before billing 99213 with same-day procedures and use modifier 25 only when the E/M is separate and significant. Do not append modifier 25 to justify routine pre/post procedure care that is included in a global package.

Units, MUEs & E/M Frequency Rules

Bill one unit of CPT code 99213 per date of service, and check payer MUE and frequency edits before submitting additional units. Medicare and many commercial payers limit multiple E/M payments by the same physician or the same-specialty group on the same date. When billing by time, document the total minutes on the date (20 to 29 minutes) and describe how the time was spent.

Top Reasons For Denials Specific To 99213 & Quick Remedies

1. Insufficient MDM/Time: Add objective data reviewed, explicit treatment decisions, and total time or MDM language (e.g., “moderate complexity” not acceptable; list elements).
2. Bundling / Improper Modifier 25 Use: Supply a separate, contemporaneous E/M note showing services beyond the procedure and remove 25 if the E/M is routine pre/post care.
3. Duplicate E/M Denial: Show different provider/specialty or distinct medical necessity for the second encounter; otherwise, submit a corrected single E/M.
4. Wrong Patient Status Billed As New: Correct claim to established-patient code or provide documentation proving the patient meets the “new” definition (no professional services from same physician/specialty in prior 3 years).