CPT Code Overview

CPT code 99391 is used for periodic comprehensive preventive medicine reevaluation and management of an established patient who is an infant (age younger than 1 year). This service includes an age and gender appropriate history, examination, counseling, anticipatory guidance, risk factor reduction interventions, and the ordering of appropriate immunizations, laboratory, or diagnostic procedures. The typical site of service for this code is the office setting (Place of Service 11). This code is part of preventive medicine services for established patients, focusing on early childhood health maintenance and disease prevention.

Clinical Context

A typical scenario for CPT code 99391 involves an established infant patient, younger than 1 year, presenting to a primary care office for a periodic preventive medicine visit. The clinical workflow includes obtaining an age-appropriate medical history, performing a comprehensive physical examination, providing counseling and anticipatory guidance to the parent or guardian, addressing risk factor reduction, and ordering appropriate immunizations and laboratory or diagnostic procedures as indicated. The visit is focused on health maintenance and early detection of potential issues, rather than management of acute or chronic illness.

Coding Specifications

• Modifier 25: Used when a significant, separately identifiable evaluation and management service is performed by the same physician on the same day as another procedure or service. This may apply if, during the preventive visit, an additional E/M service is provided.

• Modifier 33: Indicates that the service provided is preventive in nature. This modifier is used to identify preventive services for payors, including Blue Cross Blue Shield, Cigna Health, Aetna, UnitedHealthcare, BUCA, and Medicare.

• Provider taxonomy 207Q00000X represents Family Medicine, which includes physicians providing comprehensive primary care across all ages, including infants.

Related Diagnoses

• Z00.129: Encounter for routine child health examination without abnormal findings

  • Used when the preventive visit reveals no abnormal findings in the infant.

• Z00.121: Encounter for routine child health examination with abnormal findings

  • Used when the preventive visit identifies abnormal findings requiring further evaluation.

• Z76.2: Encounter for health supervision and care of other healthy infant and child

  • Used for general health supervision visits for healthy infants and children.

• Z00.110: Health examination for newborn under 8 days old

  • Used for preventive visits for newborns less than 8 days old.

• Z00.111: Health examination for newborn 8 to 28 days old

  • Used for preventive visits for newborns aged 8 to 28 days.

Each diagnosis code is relevant for documenting the clinical reason for the preventive medicine service provided under CPT code 99391, based on the infant's age and findings during the visit.

Related CPT Codes

• 99392: Periodic comprehensive preventive medicine reevaluation and management of an established patient; early childhood (age 1 through 4 years). Used for preventive visits in children older than 1 year.

• 99393: Periodic comprehensive preventive medicine reevaluation and management of an established patient; late childhood (age 5 through 11 years). Used for preventive visits in school-aged children.

• 99394: Preventive medicine reevaluation and management of an established patient; adolescent (age 12 through 17 years). Used for adolescent preventive visits.

• 99395: Preventive medicine reevaluation and management of an established patient; 18 through 39 years. Used for adult preventive visits.

• 99396: Preventive medicine reevaluation and management of an established patient; 40 through 64 years. Used for middle-aged adult preventive visits.

• 99397: Preventive medicine reevaluation and management of an established patient; 65 years and older. Used for senior preventive visits.

These codes are age-specific alternatives to 99391 and are selected based on the patient's age at the time of the preventive visit. Only one code is used per visit, corresponding to the patient's age group.

National mean rates for CPT code 99391 show that UnitedHealth Group has the highest average reimbursement at $133.31, while Aetna is the lowest among the major commercial payers at $98.41. The BUCA average (Blue Cross Blue Shield, UnitedHealth Group, Cigna, Aetna) stands at $105.35. Medicare rates are not available in the input for comparison.

Rate dispersion, measured by the difference between the 75th and 25th percentiles, varies across payers. Aetna has a range of $45.50, Blue Cross Blue Shield $51.50, Cigna $72.00, UnitedHealth Group $73.83, and BUCA $52.51. Aetna exhibits the tightest spread, while UnitedHealth Group and Cigna show the widest, indicating greater variability in commercial reimbursement rates for this code.

The table and chart below present a detailed breakdown of national benchmarks for each payer.