---
title: "CPT 99391: Established patient preventive visit, under 1… | BillingBrief"
description: "A periodic comprehensive preventive medicine visit (well-baby checkup) for an established patient under 1 year old."
canonical: "https://billingbrief.com/cpt/99391/"
language: "en"
---

# 99391 Established patient preventive visit, under 1 year

CPT · [BillingBrief summary](#source)

A periodic comprehensive preventive medicine visit (well-baby checkup) for an established patient under 1 year old.

## What to know

-   Preventive codes are chosen by patient age.

## Related codes

-   [`99381` New patient preventive visit, under 1 year CPT](https://billingbrief.com/cpt/99381/)
-   [`99392` Established patient preventive visit, ages 1 to 4 CPT](https://billingbrief.com/cpt/99392/)

## From the source

This is BillingBrief’s own explanation, not the official CPT descriptor. For the official code set, see the [American Medical Association](https://www.ama-assn.org/practice-management/cpt).

Code set

CPT

Category

Preventive medicine

Educational reference only. Not medical, legal, or billing advice. Always check the current official code set and payer policy before you bill. [About BillingBrief and our sources](https://billingbrief.com/about/).