CPT® Code 99402

Quick Reference:

• What 99402 means: Individual preventive medicine counseling and/or risk factor reduction interventions, reported as a separate procedure, for an encounter of approximately 30 minutes. It is used when the visit’s primary service is structured prevention counseling rather than evaluation of a new or existing problem.
• Time threshold (midpoint rule): Because the descriptor is “approximately 30 minutes,” time-based reporting follows CPT’s standard midpoint logic. In practice, documentation should support that counseling time exceeded half the stated time (i.e., more than 15 minutes) and is consistent with the 30-minute service level. Use shorter/longer preventive counseling codes (99401/99403/99404) when the documented time clearly fits those levels.
• Medicare Part B (important): Medicare does not pay for CPT preventive medicine counseling codes 99401–99404 as a general preventive benefit. CMS policy guidance instructs contractors not to pay these preventive medicine services because Medicare law excludes them, and Medicare uses specific HCPCS/G-codes for certain covered preventive counseling topics instead.
• Commercial/ACA plans: Payment is payer-specific. Many commercial plans reimburse 99402 when documentation supports a distinct preventive counseling service. When the counseling qualifies as an evidence-based preventive service under ACA preventive coverage, modifier 33 may be required to signal the preventive benefit and avoid cost-sharing.
• Billing with E/M (modifier 25): If you perform a separately identifiable problem-oriented E/M and also provide distinct preventive counseling, report the E/M with modifier 25 and report 99402 separately. The record must support two distinct services (separate problems/assessment/plan vs. preventive counseling content + time).
• Diagnosis linking: Use ICD-10-CM codes that reflect the counseling purpose (often Z71.- counseling codes) and/or the relevant risk factor/condition. ICD-10-CM official guidance supports use of counseling Z-codes such as dietary and exercise counseling; correct linkage reduces denials.
• Documentation essentials: Auditors expect (1) total counseling time, (2) a specific description of topics covered and individualized risk factors, and (3) a documented plan (goals, follow-up, referrals, materials, patient response). Missing time or generic “counseled” statements are the most common denial triggers.

CPT 99402 is the standard code for a structured, time-based session of individual preventive medicine counseling lasting approximately 30 minutes.

In clean claims, 99402 is used when the clinician delivers counseling focused on prevention and risk reduction (for example, nutrition, physical activity, vaccine counseling, lifestyle risk reduction, or other preventive interventions) and the service is documented as a distinct counseling encounter.

Most reimbursement and audit risk comes from four avoidable failures:

1. missing or non-credible time documentation,
2. using 99402 for routine advice that is considered part of an E/M or preventive exam,
3. Medicare billing where the code is generally non-covered, and
4. inadequate payer signaling for ACA preventive benefits (often modifier 33).

This 2026-focused guide explains how to report 99402 in a payer-realistic, audit-defensible manner.

Definition and Appropriate Use

CPT 99402 is defined as preventive medicine counseling and/or risk factor reduction interventions provided to an individual (separate procedure);

approximately 30 minutes.

The defining concept is that the primary service is prevention counseling—not a problem-oriented E/M, and not the routine counseling included in a comprehensive preventive medicine evaluation (e.g., annual physical/wellness visit).

In operational terms, 99402 fits when all of the following are true:

• The encounter is prevention-focused: The visit is scheduled and delivered as counseling to reduce risk or improve preventive behaviors (e.g., dietary counseling for cardiometabolic risk, exercise counseling for sedentary lifestyle, counseling to improve adherence to preventive recommendations).
• The service is distinct: The counseling is performed as a distinct service rather than brief advice embedded within another primary service. “Brief advice” is commonly considered part of E/M or preventive exam work and typically does not justify a separate 99402 charge.
• Time supports the service level: The record supports time consistent with an “approximately 30-minute” preventive counseling service. If time is clearly shorter/longer, a different counseling time code is more appropriate.
• The content is individualized: The counseling content is tied to the patient’s risk profile, barriers, and a plan (goals, follow-up, referrals), rather than generic handouts alone.

What 99402 is not: It is not a “bundle code” to capture routine advice that clinicians commonly give during office visits (e.g., “encouraged diet and exercise” in one sentence).

It is also not a substitute for payer-specific covered preventive counseling codes (including certain Medicare-covered counseling services).

For many payers, the key test is whether the record makes it clear that a clinician performed a structured preventive counseling service that stands on its own clinically and administratively.

Practical boundary: If the counseling documentation does not contain a defensible time statement and concrete counseling content (risk factors + intervention + plan), many payers treat the service as included in other work and deny 99402 as not separately reportable.

Medicare Coverage Rules and Alternatives

Medicare Part B coverage is the most important “do not miss” rule for 99402.

CMS policy guidance instructs that Medicare does not pay for preventive medicine services reported with CPT preventive medicine counseling codes (including the 99401–99404 family) because Medicare law excludes coverage for these preventive medicine services as a general category. As a result, standalone claims to Medicare for 99402 are typically denied.

This matters operationally in two ways:

• Medicare fee-for-service: Claims for 99402 commonly deny as non-covered. This is expected behavior and not a documentation “fix.”
• Medicare Advantage: Medicare Advantage plans can have plan-specific preventive benefits, but many still follow CMS coverage architecture. Treat 99402 as a high-denial-risk code unless the plan explicitly covers it and your documentation meets plan criteria.

What to do instead for Medicare patients: Medicare covers many preventive services through specific benefit designs and codes.

For counseling, Medicare frequently uses topic-specific HCPCS G-codes or dedicated preventive service codes rather than CPT 99402.

The compliance approach is to identify the actual counseling topic and select the Medicare-covered preventive pathway when applicable—rather than billing 99402 and hoping documentation will overcome a statutory exclusion.

Compliance tip: If you routinely see Medicare denials for 99402, the solution is usually workflow redesign (route Medicare patients to covered preventive counseling pathways where appropriate), not “more documentation” for an excluded code category.

Commercial and ACA Preventive Coverage (Modifier 33)

Commercial payer coverage for 99402 is variable. Some insurers reimburse 99402 broadly when criteria are met, while others restrict it by diagnosis, preventive topic, member benefits, or whether the counseling is delivered as part of a preventive service benefit.

For example, Cigna’s preventive care policy materials include preventive counseling code families and describe payment behavior within their preventive framework.

ACA preventive services and cost-sharing:

Under the Affordable Care Act (ACA), many non-grandfathered commercial plans must cover certain evidence-based preventive services without patient cost-sharing when delivered by in-network providers.

In claims processing, payers often require a preventive indicator to apply the correct benefit.

The American Medical Association (AMA) instructs that modifier 33 should be used when the primary purpose of the service is the delivery of an evidence-based preventive service in accordance with applicable preventive guidelines (such as USPSTF A/B recommendations).

In practical terms:

• If the counseling meets an ACA evidence-based preventive service category and the payer expects modifier 33, then append 33 to 99402 (or to the appropriate code designated by payer policy) to help ensure preventive benefit adjudication.
• If modifier 33 is omitted, the payer may adjudicate the service as a standard office service, which can trigger cost-sharing or denial depending on the member’s plan rules.
• If the counseling does not qualify as evidence-based preventive service, do not use modifier 33 as a “payment strategy.” Modifier 33 must reflect the preventive nature of the service as defined by payer preventive coverage logic.

Because payer preventive benefit adjudication is highly operational, clinics should maintain a payer playbook that specifies:

(1) which preventive counseling topics they deliver as structured services,

(2) which codes they use for each topic, and

(3) whether the payer requires modifier 33, specific diagnosis codes, or additional claim indicators.

The AMA preventive services coding guidance is the authoritative baseline on how modifier 33 communicates preventive intent to commercial payers.

Documentation Standards for Audit Defense

99402 is a time-based counseling service. Auditors and payers typically look for three things:

(a) time, (b) content, and (c) a plan.

If any one of these is missing, the claim becomes vulnerable to denial or recoupment.

The goal is to make the service independently legible: an external reviewer should be able to understand what counseling was delivered, why it mattered for prevention, and why it meets the 30-minute preventive counseling service level.

Minimum documentation elements

• Total face-to-face counseling time: Document total minutes spent in preventive counseling (e.g., “30 minutes face-to-face preventive counseling”). If payer policy requires it, indicate that counseling dominated the visit.
• Prevention focus and risk factors: Specify the risk factor(s) or preventive topic(s) addressed (dietary risk, physical inactivity, vaccine concerns, lifestyle risk reduction, etc.).
• Specific counseling interventions: Describe what was done beyond a generic statement. Examples include structured diet strategy, exercise prescription, barrier assessment, motivational interviewing, shared decision-making on preventive strategies, or counseling on preventive recommendations.
• Plan, goals, and follow-up: Document measurable goals (when feasible), follow-up timeframe, and referrals (e.g., dietitian, lifestyle program), and whether educational materials were provided.
• Patient response/understanding: Document readiness to change, patient questions addressed, and whether the patient understood the plan.

Separating counseling from other services

If 99402 is billed alone, your note should read like a standalone counseling service.

If 99402 is billed in addition to a problem-oriented E/M, the record should clearly demonstrate two distinct services:

• Problem-oriented E/M section: complaint-driven history/exam/assessment/plan for the problem(s) evaluated and managed.
• Preventive counseling section: prevention-focused counseling content with a time statement and preventive plan.

The AMA’s preventive services coding guidance is commonly relied upon when payers assess whether a service was provided as a preventive service and whether preventive indicators were correctly used.

Audit pattern: Notes that state only “counseled on diet and exercise” without total time and without individualized content are frequently treated as non-billable counseling because similar counseling is considered routine and included in other visit work.

Time Rules and Code Selection (99401–99404)

The preventive medicine counseling code family is time-based. The counseling level should match the documented time and the intensity of the preventive counseling delivered.

A widely used time-reference framework for these codes lists the family as:

99401 (~15 minutes), 99402 (~30 minutes), 99403 (~45 minutes), and 99404 (~60 minutes).

Because CPT uses “approximately,” reporting is typically guided by midpoint logic and reasonable alignment of documented time to the code selected.

AACE’s preventive medicine counseling reference is frequently cited in coding education contexts for time breakpoints and practical code selection across 99401–99404.

Comparison table: preventive counseling time codes

Group counseling: Separate codes exist for group preventive counseling (e.g., 99411–99412) when counseling is delivered in a group setting.

Do not report individual codes (99401–99404) for group sessions.

Diagnosis Coding and ICD-10 Linkage

Diagnosis coding should explain why preventive counseling was reasonable and what topic was addressed.

For 99402, payers commonly expect either:

(a) an ICD-10-CM counseling Z-code, or

(b) a relevant risk factor/condition code (e.g., obesity, tobacco use) plus a counseling Z-code when appropriate.

The FY2025 ICD-10-CM Official Guidelines provide the authoritative structure for using Z-codes and support correct reporting of counseling encounters and risk factors.

Common counseling-linked ICD-10-CM examples

• Z71.3 – Dietary counseling and surveillance
• Z71.82 – Exercise counseling
• Z71.85 – Immunization safety counseling
• Z71.89 – Other specified counseling (use when no more specific counseling Z-code applies)

Risk factor/condition linkage: When the counseling is driven by a specific risk factor or condition, add the relevant diagnosis code(s) that make medical sense for the counseling topic.

Examples include obesity codes (E66.-), BMI codes (Z68.-), tobacco use/nicotine dependence codes, or other documented risk factors.

The objective is to align the claim with the chart: the diagnoses should mirror the documented counseling topics and the patient’s risk profile.

Common denial trigger: Using diagnoses unrelated to counseling content (e.g., linking 99402 to an unrelated acute diagnosis) can make the counseling appear incidental rather than medically meaningful. Link counseling codes to counseling-related diagnoses whenever possible.

Modifier 25 and Claim Structure

The highest-yield modifier issue for 99402 is whether the counseling was billed alone or billed in addition to a problem-oriented E/M.

When both are billed on the same day, payers often scrutinize whether counseling was simply part of the E/M.

The accepted approach is:

• Append modifier 25 to the E/M when there is a significant, separately identifiable E/M service performed on the same date as the counseling.
• Do not append modifier 25 to 99402 (it is not the modifier’s intended use in this scenario).

The record should show separation in both substance and documentation. The AMA preventive services guidance is used widely across payer adjudication frameworks for preventive services signaling (including modifier 33), and it is consistent with the broader principle that modifiers communicate how services should be adjudicated when delivered together.

Preventive signaling for commercial payers (modifier 33)

For commercial payers, when 99402 represents an ACA-recognized preventive service, modifier 33 is a common requirement to apply the preventive benefit correctly.

The AMA states that modifier 33 communicates to a commercial payer that a service was provided as an ACA preventive service, helping ensure correct cost-sharing handling.

Always align modifier usage with payer guidance. Incorrect modifier 33 usage can create compliance risk if it misrepresents the service as evidence-based preventive care when it was not.

Real-World Clinical Scenarios

Scenario 1: Diet and physical activity counseling as the primary service

Setting: Primary care office (commercial plan).

Service: Patient schedules a prevention-focused visit to address lifestyle risk (diet and physical inactivity). Clinician documents 30 minutes of face-to-face preventive counseling: risk factors, dietary pattern review, barriers, exercise plan, and follow-up plan.

Coding logic: Report 99402 as the primary service because the visit is fundamentally a preventive counseling session. Link to appropriate counseling Z-codes (e.g., dietary and exercise counseling codes) consistent with ICD-10 guidance.

Modifier note: If the counseling meets an ACA preventive service category per payer rules, append modifier 33 to support preventive benefit processing.

Scenario 2: Problem-oriented visit plus separate preventive counseling

Setting: Office visit with a distinct chronic problem follow-up.

Service: Patient is seen for a problem-oriented management visit (assessment and plan for the medical problem), and the clinician also provides a distinct 30-minute prevention counseling session focused on risk reduction with its own time statement and plan.

Coding logic: Report the E/M code with modifier 25 and report 99402 separately for the counseling, supported by distinct documentation sections and appropriate diagnosis linkage for the counseling purpose.

Scenario 3: Immunization safety counseling visit (30 minutes)

Setting: Vaccine counseling encounter (commercial plan).

Service: Patient has vaccine hesitancy and requests counseling. Clinician documents 30 minutes addressing vaccine safety concerns, side effects, contraindications, and a plan for immunization follow-through.

Coding logic: Report 99402 for the counseling service when documentation supports time and content, and link to the immunization safety counseling ICD-10-CM code where appropriate.

Scenario 4: Medicare patient requests lifestyle counseling (coverage risk)

Setting: Medicare Part B beneficiary requests prevention counseling.

Service: Clinician provides preventive counseling as requested.

Coding risk: Reporting 99402 to Medicare Part B is typically non-covered. CMS policy guidance directs that preventive medicine counseling codes (including 99402 within 99401–99404) are excluded as preventive medicine services under Medicare law.

Operational approach: Use Medicare-covered preventive service pathways when applicable rather than billing 99402 and expecting payment.