Summary & Overview
HCPCS Level II M1419: Not Up to Date on COVID-19 Vaccinations
HCPCS Level II code M1419 identifies patients who are not up to date on COVID-19 vaccinations as defined by current CDC recommendations. Nationally, this code supports tracking of vaccination status for clinical care, reporting, and immunization outreach efforts during ongoing public health vaccination campaigns. The designation is relevant across ambulatory and public health settings where vaccination assessment or counseling occurs.
Key payers referenced for national consideration include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of the code’s clinical intent, the typical service setting, and where this code fits into vaccination workflows. The publication summarizes payer coverage considerations, common billing modifiers, and how M1419 interacts with immunization documentation practices. It also outlines practical benchmarks and policy updates affecting immunization coding and reporting at a national level. The content is designed for billing professionals, clinical administrators, and policy analysts seeking clear context about use and implications of M1419 in routine immunization and public health activities.
Billing Code Overview
HCPCS Level II code M1419 denotes patients who are not up to date on their COVID-19 vaccinations as defined by CDC recommendations on current vaccination. The code is used to identify vaccination status for patients who have not received all CDC-recommended COVID-19 vaccine doses.
Service Type: Vaccination status assessment / immunization-related encounter
Typical Site of Service: Outpatient clinics, primary care offices, public health clinics, and vaccination sites
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Clinical & Coding Specifications
Clinical Context
A typical patient scenario involves an adult or pediatric patient presenting to a primary care clinic, community health center, pharmacy-based immunization site, or public health clinic who is identified during triage or preventative care visit as not up to date on COVID-19 vaccination per CDC current recommendations. The clinical workflow begins with eligibility screening for contraindications and precautions (allergies, history of severe reaction to a prior dose, immunocompromise status), review of prior vaccine history and immunization registry, and counseling about current CDC-recommended vaccine formulation and dosing schedule. After documentation of informed consent and completion of necessary screening questions, the selected COVID-19 vaccine is prepared and administered via intramuscular injection. Post-vaccination observation is performed for the recommended period (typically 15–30 minutes) to monitor for immediate adverse reactions. Documentation includes the vaccine manufacturer, lot number, administration site, VIS date, consent, and billing code M1419 for patients not up to date per CDC recommendations. Typical sites of service are outpatient clinic, ambulatory surgery center (if bundled with other procedures), pharmacy vaccination clinic, and public health vaccination events. A realistic scenario: a 68-year-old patient with chronic obstructive pulmonary disease presents for an annual visit; review of the state immunization registry shows no COVID-19 booster in the past 12 months; after vaccine counseling and screening, the patient receives the recommended booster and observation in the clinic, and the encounter is billed using M1419 with appropriate ICD-10 diagnosis codes reflecting risk factors or need for immunization as applicable.
Coding Specifications
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