Summary & Overview
HCPCS G9879: MDPP Core Maintenance Two Sessions with 5% Weight Loss
HCPCS Level II code G9879 denotes a beneficiary’s attendance at two Medicare Diabetes Prevention Program (MDPP) core maintenance sessions in months 10–12 of the MDPP services period under the expanded model, with documented achievement of at least 5% weight loss from baseline measured in-person. This code captures a specific later-stage MDPP encounter tied to both session attendance and an outcome metric, and it supports tracking program adherence and outcomes for beneficiaries in sustained maintenance. Nationally, this code matters as Medicare and commercial plans increasingly monitor value-based preventive services and outcomes for diabetes risk reduction.
Key payers in scope include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise explanation of what the code represents, the clinical and programmatic context of MDPP core maintenance sessions, and the typical service setting for in-person maintenance encounters. The publication also summarizes payer relevance, common modifier usage (input provided), and what to expect in claims capture and reporting for MDPP maintenance attendance with weight-loss attainment. This resource clarifies how G9879 fits within MDPP service sequencing and outcome documentation for national stakeholders focused on diabetes prevention program delivery and reimbursement.
Billing Code Overview
HCPCS Level II code G9879 describes attendance at two Medicare Diabetes Prevention Program (MDPP) core maintenance sessions during months 10–12 of the MDPP services period under the MDPP expanded model (EM). A core maintenance session is an MDPP service furnished during months 7 through 12 that is approximately one hour in length and follows a CDC-approved DPP curriculum for maintenance sessions. The coding descriptor also specifies that the beneficiary achieved at least 5% weight loss from baseline, measured by at least one in-person weight measurement at a core maintenance session in months 10–12.
Service type: MDPP core maintenance sessions (attendance-based service with weight-loss attainment requirement)
Typical site of service: MDPP supplier locations where in-person maintenance sessions are delivered under the MDPP expanded model, including community or clinic-based group session settings.
Clinical & Coding Specifications
Clinical Context
A 58-year-old Medicare beneficiary with prediabetes enrolled in the Medicare Diabetes Prevention Program (MDPP) expanded model presents for scheduled core maintenance sessions in month 10 of the MDPP services period. The beneficiary previously completed the core intervention (months 1–6) and subsequent maintenance months 7–9, and has achieved at least 5% weight loss from baseline as documented by an in-person weight measurement during a maintenance visit in months 10–12. Two approximately one-hour CDC-approved DPP core maintenance sessions are delivered during months 10–12 by an MDPP supplier, each following the CDC-approved curriculum for maintenance sessions. The clinical workflow includes: provider or supplier outreach to schedule the group or individual maintenance sessions; in-person attendance with a trained MDPP lifestyle coach; an objective weight measurement obtained and recorded during one of the sessions confirming ≥5% weight loss from baseline; documentation of session attendance, curriculum adherence, and beneficiary progress in the MDPP record; and submission of the HCPCS Level II code G9879 for two MDPP core maintenance sessions attended during months 10–12 under the expanded model.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
00 | No modifier (place of service/professional designation varies by payer) | Used when no specific modifier from the list applies; report as standard billing for the MDPP supplier when payer permits. |