What is the frequency limit for CPT code 99395?

The frequency limit for CPT code 99395 is once per 12-month period (typically interpreted as once per calendar year or a rolling 365-day/11-to-13-month window depending on the commercial insurance plan).

Key Details

• Patient Criteria: Established patients aged 18 to 39 years old.
• Duplicate Billing: Billing 99395 a second time within the 12-month interval—even for a separate health concern—is generally denied as a duplicate preventive service.
• Problem Visits: If a patient needs a second visit within the same year for a specific medical problem or symptom, it must be billed using a problem-oriented Evaluation and Management (E/M) code (such as 99212–99215) with proper documentation of medical necessity, rather than another preventive code.
• Payer Exclusions: Medicare does not cover 99395 and uses separate HCPCS codes instead, whereas most commercial and ACA-compliant marketplace plans cover one preventive visit per year at 100%.

CPT code 99395 can be billed once per 12-month period (or once per calendar year) for the vast majority of insurance payers.

Because CPT 99395 represents a comprehensive periodic preventive medicine evaluation for an established patient aged 18 through 39, it is strictly subject to frequency limitations set by health plans.

Critical Billing Constraints

• The "Frequency Edit" Rule: Most commercial insurance plans under the Affordable Care Act (ACA) cover exactly one wellness exam per year. Depending on the specific policy, this is enforced either as a strict rolling 12-month window (exactly 365 days must pass since the last wellness visit) or a calendar year window (once per Jan 1 – Dec 31 period). Submitting a second claim within that window will result in a flat denial.
• Medicare Coverage: Original Medicare does not cover CPT 99395. For eligible Medicare beneficiaries seeking annual wellness visits, providers must bill using HCPCS codes G0438 or G0439 instead.
• Co-billing Exceptions: If a patient has an active or acute medical issue that requires a significant, separately identifiable evaluation during the same preventive appointment, you cannot bill 99395 twice. Instead, you should bill one unit of CPT 99395 alongside a standard office visit E/M code (e.g., 99213 or 99214) with Modifier 25 appended to the office visit code. Both codes must be backed by distinct clinical documentation.

CPT code 99395 is billed for a periodic, comprehensive preventive medicine reevaluation and management visit for an established patient aged 18 to 39 years.

Patient and Visit Criteria

• Patient Status: Must be an established patient (seen by the provider or same-specialty group within the past 3 years).
• Age Range: 18 through 39 years old.
• Visit Type: Routine wellness exam or annual physical without a primary acute or symptom-driven complaint.

Included Services

• Age- and gender-appropriate comprehensive history and physical examination.
• Counseling, anticipatory guidance, and risk factor reduction interventions.
• Ordering of appropriate laboratory or diagnostic procedures.

Coding and Billing Rules

• Diagnosis Codes: Use primary preventive ICD-10 codes (such as Z00.00 or Z00.01 for general adult medical examinations). Avoid symptom-based or chronic disease primary codes for the preventive line.
• Medicare Exclusion: Medicare Part B does not cover CPT 99395; use specific HCPCS codes like G0402, G0438, or G0439 instead.
• Simultaneous Problem Visits: If a significant, separate acute or chronic problem is addressed during the same visit, bill the appropriate outpatient E/M code (99211–99215) alongside 99395 with Modifier -25 appended to the problem-oriented E/M code, supported by distinct documentation.
• Additional Services: Separate screening tools (like a PHQ-9 using code 96127) or specific interventions (like tobacco cessation counseling 99406) may be billable separately if allowed by the payer.

For a comprehensive breakdown of coding rules, you can review guidelines from resources like Optimantra and Avenue Billing Services.

CPT code 99396 typically has a frequency limit of one comprehensive preventive visit per year (or every 365 days), depending on the specific insurance payer's guidelines.

Frequency Rules

• Calendar Year vs. 365-Day Rule: Some commercial insurance plans allow one preventive exam per calendar year (meaning a patient can have one in December and another in January of the next year). Other plans enforce a strict 365-day interval between visits.
• Payer Discretion: Because coverage policies vary, insurers may deny claims if a second routine physical exam is billed too soon within the same timeframe.

Key Billing and Coverage Details

• Age Range: Applies to established adult patients aged 40 to 64.
• Patient Status: An established patient has seen a provider in the same group practice within the past three years.
• Medicare Exclusion: Original Medicare does not reimburse CPT 99396; providers must use HCPCS G-codes (such as G0438 or G0439) for annual wellness visits instead.

Yes, you can bill CPT code 99395 (preventive visit for an adult aged 18–39) and 99214 (established patient office/outpatient visit, moderate medical decision making) together, but only when a significant, separately identifiable medical service is performed during the same encounter.

Key Requirements for Combined Billing

• Separate Reason: The patient must present with a distinct acute or chronic problem (such as evaluating new-onset hypertension or adjusting medications for an uncontrolled condition) that goes beyond the routine preventive exam.
• Modifier 25: You must append Modifier 25 to the problem-oriented E/M code (99214), not the preventive code. This indicates that the problem-oriented work was separate and extra.
• Distinct Documentation: The medical record must clearly separate the components. The exam or time spent on the preventive service (99395) cannot be double-counted to support the medical decision-making or time requirements of the 99214 code.