Well-Child Visits for the FNP Exam: Milestones by Age, Screening Schedule and Immunizations

A well-child visit on the FNP exam is a fixed package: the right visit age, the screenings due at that age, a milestone check against the CDC 2022 checklist, anticipatory guidance and the vaccines due. The AAP Bright Futures periodicity schedule sets the visit ages and the screening calendar, the CDC milestones (revised in 2022 to the age at which at least 75 percent of children achieve each skill) define what to expect, and the routine childhood immunization schedule sets the vaccines. Most exam questions turn on one number: the age a screen is due, the age a milestone should be present, or the minimum age or interval for a vaccine.

The Bright Futures visit schedule

Bright Futures recommends a prenatal visit, a newborn evaluation, then visits at 3 to 5 days, by 1 month, and at 2, 4, 6, 9, 12, 15, 18, 24 and 30 months, followed by annual visits from 3 through 21 years. The 3 to 5 day visit exists for weight, feeding and jaundice: it is where the provider checks weight loss from birth weight, breastfeeding adequacy and bilirubin risk.

Every visit includes history, measurements, developmental surveillance, a physical examination, anticipatory guidance and immunization review. Growth is plotted at every visit: weight-for-length before age 2 and body mass index from age 2. Blood pressure is measured annually from age 3, and earlier in children with risk conditions such as prematurity, congenital heart disease or kidney disease.

Screening calendar: what is due when

The periodicity schedule distinguishes universal screening (done for every child at that age) from risk assessment (screen only if the risk questions are positive). The table lists the universal items the exam tests most often.

A recurring exam trap is to offer the autism screen at 9 months or the general developmental screen at 24 months. Remember the pattern: general developmental screening at 9, 18 and 30 months, autism at 18 and 24 months, so the 18-month visit carries both.

Developmental milestones: the CDC 2022 checklists

The 2022 revision by the AAP and CDC (Zubler and colleagues) changed what a milestone means. Each listed skill is one that at least 75 percent of children show by that age. A child who is missing one is therefore already behind most peers, and the guidance is to screen and refer rather than wait and see. The revision also added checklists at 15 and 30 months, so every Bright Futures visit from 2 months to 5 years now has one. Some milestones moved: crawling was removed because many children skip it, and several skills now appear at a later checklist than in older material, which is why older study guides may cite earlier ages.

What to do with a missed milestone

A missing milestone, a parent concern or a positive screen leads to three parallel actions: a standardized screening tool if one has not just been done, referral to early intervention (Part C, birth to 3 years) or the school district (Part B, 3 years and older) without waiting for a diagnosis, and medical evaluation, including audiology for any speech delay. Loss of a previously acquired skill at any age is a red flag that needs prompt evaluation. Prematurity is handled by using the corrected age for milestones until about 2 years.

Immunizations

The routine schedule the exam tests

The following routine series reflects the childhood schedule that CDC posted before the 2026 revision and that the AAP continues to endorse. Exact minimum ages, intervals and catch-up rules live in the schedule notes and should be checked there.

Contraindications and precautions are tested as often as ages. Anaphylaxis to a prior dose or component is a contraindication to that vaccine. Live vaccines (MMR, varicella, rotavirus, intranasal influenza) are withheld in severe immunodeficiency and pregnancy. A moderate or severe acute illness is a precaution. Mild illness, low-grade fever, antibiotic use, prematurity, breastfeeding, a pregnant household contact and egg allergy are not reasons to delay.

The 2026 schedule dispute

In January 2026 an HHS directive produced a revised CDC childhood schedule that moved hepatitis A, the hepatitis B birth dose for infants of HBsAg-negative mothers, rotavirus, influenza, COVID-19 and MenACWY from routine recommendation to risk-based or shared clinical decision-making categories. The AAP rejected the revision and kept recommending the prior harmonized schedule. In American Academy of Pediatrics v Kennedy, a federal district court in Massachusetts suspended the 2026 schedule and reinstated the earlier version; the government appealed, and no appellate ruling had been issued as of September 2026. Because the legal status may change, confirm in the current guideline which version CDC is posting before advising a family. Certification exams are built from established content and are written to the routine schedule above.

Anticipatory guidance by stage

• Newborn to 6 months: back to sleep on a firm, flat, separate surface with no soft objects; rear-facing car seat; water heater at or below 120 degrees F; no honey before 12 months; vitamin D 400 IU daily for breastfed infants; introduce allergenic foods such as peanut around 4 to 6 months when developmentally ready.
• 6 to 12 months: childproofing for crawling and cruising, poison control number, no walkers, iron-rich complementary foods, dental home by 12 months.
• 1 to 5 years: whole milk from 12 months until age 2, limited juice, screen time limits, water safety, toilet training readiness, rear-facing car seat as long as the seat allows, then forward-facing with a harness.
• School age and adolescence: booster seat until the vehicle belt fits, helmets, firearm safe storage, puberty education, confidential time alone with the adolescent from early adolescence.

Referral triggers

Refer or escalate when there is loss of skills, a positive autism screen (diagnostic evaluation plus early intervention at the same time), any speech delay without a recent audiology evaluation, crossing two or more major percentile lines on the growth curve, an elevated blood lead level per the CDC reference value, persistent hypertension, a family history of sudden cardiac death before age 50, or a positive suicide risk screen, which requires same-day safety assessment.

How the exam tests this

• Visit-age traps: autism screening offered at 9 or 12 months instead of 18 and 24 months, or general developmental screening at 24 months instead of 30.
• Old milestone ages: an answer that calls a 12-month-old with no words "normal until 18 months" uses outdated thinking. Under the 2022 checklists, saying "mama" or "dada" or a special name is expected by 12 months.
• "Wait and recheck" distractors: when a milestone is missing, the correct answer is standardized screening plus referral, not reassurance with a recheck at the next visit.
• Hearing first: speech delay always prompts an audiology evaluation before or alongside speech therapy referral.
• False contraindications: mild illness, antibiotics, egg allergy and a pregnant mother at home are frequent wrong reasons to defer a vaccine.
• Rotavirus age limits and live-vaccine spacing (28 days) are classic calculation items.
• Lipid screening once at 9 to 11 and once at 17 to 21; HIV once between 15 and 21; depression yearly from 12.

Practice question

An 18-month-old boy is brought in for a well visit. He walks well, scribbles and drinks from an open cup. His mother reports that he says "mama" and "ball" but no other words, does not point to show her things and rarely looks up when his name is called. He had otitis media twice last winter. Vaccines are up to date except the visit's scheduled doses, and he has a mild cold with a temperature of 99.5 F today. Which action is most appropriate?

• A. Reassure the mother, defer today's vaccines because of the cold and recheck language at the 24-month visit.
• B. Administer a standardized developmental screen and an autism-specific screen, refer to early intervention and audiology, and give today's vaccines.
• C. Order a lead level and hemoglobin and repeat developmental surveillance in 3 months.
• D. Refer to a developmental pediatrician and hold early intervention referral until a diagnosis is confirmed.

Answer: B. At 18 months the CDC checklist expects three or more words and the Bright Futures schedule calls for both general developmental screening and autism screening, so this child needs both tools, early intervention referral and an audiology evaluation given the delay and ear infection history. Option A is wrong twice: a mild cold with low-grade fever is not a reason to defer vaccines, and "wait and see" ignores a missed milestone. Option C substitutes labs for the screening that is due and delays action. Option D is wrong because early intervention referral should happen at the same time as diagnostic evaluation, not after it.

Key points

Related NPPace guides

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• Contraception by Medical Condition: Using the US MEC on the FNP Exam
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• How to Read a Primary-Care Vignette Like a Provider: The 5-Step Method
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