Summary & Overview
CPT 99429: Preventive Medicine Service, Unspecified
CPT code 99429 designates a preventive medicine service that lacks a more specific CPT descriptor and is used when a preventive encounter cannot be reported with an existing preventive medicine code. Nationally, such a catch-all preventive code matters for accurate classification of preventive services, administrative reporting, and situational billing when patient encounters fall outside standardized preventive codes. The payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare.
Readers will find a concise explanation of the code’s clinical scope, typical settings for service delivery, and how payers commonly recognize this type of preventive encounter. The publication summarizes benchmarking and coverage patterns where available, highlights policy considerations affecting use of non-specific preventive codes, and provides clinical context so administrators and billing staff can identify when 99429 is relevant. Data not available in the input is noted where applicable, and the content focuses on national-level implications rather than jurisdiction-specific rules.
Billing Code Overview
CPT code 99429 is used to report a preventive medicine service that does not have a specific code. This code captures preventive care encounters that fall outside the range of established, specific preventive medicine CPT codes.
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Service type: Preventive medicine visit for services without a more specific preventive code
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Typical site of service: Ambulatory clinic or office-based outpatient setting
Data not available in the input.
Clinical & Coding Specifications
Clinical Context
A patient presents for a preventive medicine visit that does not have a more specific preventive medicine code. Typical patients are asymptomatic adults or children seeking routine health maintenance, counseling, or risk assessment. Example scenario: a 42-year-old established patient visits their primary care clinic for an annual preventive medicine visit focused on lifestyle counseling, vaccination review, screening coordination, and anticipatory guidance. The clinical workflow includes registration, pre-visit vitals and screening questionnaires, a focused preventive medicine history (family history, social determinants, and risk factors), a targeted physical examination as indicated, counseling on diet, exercise, substance use, and mental health, orders for age-appropriate screening tests or immunizations, documentation of counseling and shared decision-making, and scheduling of follow-up preventive services.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
00 | No modifier | Standard reporting when no modifier applies |
25 | Significant, separately identifiable E/M service by the same physician on the same day of the procedure or other service | Use when a distinct preventive medicine service is provided in addition to another service on the same day and fully documented |