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Michigan Medicaid - MDHHSMedicaid · Billing Codes · Provider Bulletin · MI · Family Medicine, General Practice, Internal Medicine +2 moreMedium impact

MMP 22-35

Act
by Dec 1, 2022
Effective date
Dec 1, 2022
Identified
Jun 20, 2026

Summary

Michigan Medicaid introduced new HCPCS codes for stand-alone COVID-19 and general vaccine counseling services effective December 1, 2022. Providers must stop using previous CPT codes (99401-99404) for COVID-19 vaccine counseling and switch to the new G-codes with time-based billing.

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What to do

by Dec 1, 2022 · 4 steps
01Billing team must update system to use new HCPCS codes G0314 and G0315 for stand-alone COVID-19 vaccine counseling for patients under 21.
02Discontinue use of CPT codes 99401, 99402, 99403, and 99404 for COVID-19 vaccine counseling.
03Add new G-codes (G0310, G0311, G0312, G0313) for general vaccine counseling based on patient age and time spent.
04Update encounter forms and train staff on time-based billing requirements.

Codes mentioned

G0310G03119046090461G0312G0313G0314G031599401994029940399404

Original notice

MMP 22-35
michigan.gov · Always check the source before changing claims.
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Related changes

See all Michigan Medicaid - MDHHS changes →
MMP 26-03: Current Procedural Terminology (CPT) and Healthcare Common Procedure Coding System (HCPCS) Code UpdatesHighEffective Jan 1, 2026 · Claims & BillingHASA 22-03MediumEffective Jan 1, 2022 · Provider BulletinMMP 23-10: Telemedicine Policy Post-COVID-19 Public Health EmergencyMediumEffective May 12, 2023 · TelehealthMMP 26-20: Expansion of Coverage for Pharmacist-Provided ServicesMediumEffective Jul 1, 2026 · PharmacyBrowse every Michigan Medicaid - MDHHS change in the policy list

Related policy hubs

Michigan Medicaid - MDHHS policiesMI policy changesFamily MedicineGeneral PracticeInternal MedicinePediatricsPharmacyCode G0310Code G0311Code 90460Code 90461Code G0312Code G0313Code G0314Code G0315Code 99401Code 99402Code 99403Code 99404

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