CPT
90471 — Immunization administration, single vaccine
ACA-covered vaccines should be free, including the admin fee.
Preventive care
99384 — Preventive medicine, new patient; adolescent age 12-17 years
This code is for a comprehensive new-patient well visit for teenagers 12 through 17 years old.
- Typical setting: Doctor's office
- National avg charge (illustrative): $145-$250 (commercial/Medicaid; not covered by Medicare for this age group)
- Most-disputed reason: Age boundary error: billing 99384 for a patient who has turned 18 — use 99385 for ages 18-39
What it means
What 99384 actually means
This code is for a comprehensive new-patient well visit for teenagers 12 through 17 years old. It includes age-appropriate screenings for depression, substance use, and sexual health, along with a full physical examination and guidance on healthy behaviors. This visit focuses on prevention and does not require a presenting illness.
Common errors with this code
What goes wrong on real bills.
Most bills that look correct still contain at least one of these issues. Up to 49% of medical bills contain errors (CFPB).
- Age boundary error: billing 99384 for a patient who has turned 18 — use 99385 for ages 18-39
- Confidential services billing: improperly billing the parent's insurer for confidential adolescent services without patient consent
- Upcoding: not sufficiently distinguishing whether the level of the visit matches age-appropriate preventive guidelines
If you see 99384 on your bill
Three steps before paying.
1. Get the itemized bill. If your statement only shows a summary, request the CPT-level itemized bill before paying. Generate the request language →
2. Cross-check against the EOB. Compare what your insurer's Explanation of Benefits says you owe versus what the hospital is asking. They disagree more often than people think. Read the bill-vs-EOB guide →
3. Run a free Bill Scan. Upload the bill (and EOB if you have it) and BillBusted will flag the most likely issues with this specific code in your specific state. Run free scan →
Related codes
Other codes in this category.
People who land on 99384 often also see these adjacent codes on the same bill.
CPT
90472 — Immunization admin; each additional vaccine
Vaccine — admin (90471) is separate from the vaccine product code.
CPT
90651 — Human papillomavirus vaccine types 6, 11, 16, 18, 31, 33, 45, 52, 58, nonavalent , IM
Vaccine — admin (90471) is separate from the vaccine product code.
CPT
90670 — Pneumococcal conjugate vaccine, 13 valent , IM
Vaccine — admin (90471) is separate from the vaccine product code.
CPT
90671 — Pneumococcal conjugate vaccine, 15 valent , IM
Vaccine — admin (90471) is separate from the vaccine product code.
CPT
90677 — Pneumococcal conjugate vaccine, 20 valent , IM
Vaccine — admin (90471) is separate from the vaccine product code.
Related BillBusted guides
Plain-English reads if you see 99384 on a bill.
99384 FAQ
Plain-English answers.
What does 99384 usually cost?
$145-$250 (commercial/Medicaid; not covered by Medicare for this age group). Costs vary by region, payer contract, and whether the service was performed in a hospital outpatient department (which adds a facility fee) versus a free-standing clinic.
What's the most common billing error on 99384?
Age boundary error: billing 99384 for a patient who has turned 18 — use 99385 for ages 18-39
What should I do if I see 99384 on my bill?
Request the itemized bill and the matching EOB from your insurer. Compare the units/quantity billed against what you actually received. Run a free BillBusted scan to flag the most likely errors specific to 99384 before paying.
Don't pay 99384 blindly.
The free scan tells you in under 60 seconds whether this charge looks reasonable for your situation.