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ACPMBase2026 Compliant

CPT G0558

2026 Billing Guide

APCM Level 3

Reimbursement

$107.07

Threshold

N/A

2026 Status

Active

What is CPT Code G0558?

CPT G0558 is defined as: Advanced Primary Care Management (APCM) services, Level 3. This high-intensity bundle covers longitudinal care management for Qualified Medicare Beneficiaries (QMB) or other dual-eligible patients with two or more chronic conditions. It includes all the requirements of Level 2, plus targeted coordination addressing social determinants of health (SDOH), health equity, and navigation of complex benefit structures.

This code is primarily used for ACPM services. It falls under the category of Care Management / APCM and is valid for the 2026 calendar year according to the CMS Physician Fee Schedule.

2026 RVU Components

Relative Value Units (Non-Facility)

Standard Formula Applied

Work RVU

Physician Effort

PE (Non-Fac)

Practice Expense

Malpractice

Risk Factor

Total RVU

Note: [(Work RVU * Work GPCI) + (PE RVU * PE GPCI) + (MP RVU * MP GPCI)] * Conversion Factor

2026 CMS Policy Intelligence

efficiency shield

Strategically exempt from the -2.5% efficiency adjustment. CMS has prioritized Level 3 APCM to ensure that practices serving the most vulnerable populations are not penalized by productivity-based work cuts.

equity incentive

G0558 is a flagship 2026 policy designed to financially reward primary care providers who manage the 'total cost of care' for dual-eligible beneficiaries through intensive management.

conversion factor

Utilizes the 2026 Non-QP rate of $33.40.

Administrative Framework

Place of Service

11 (Office)12 (Home)

NCCI Exclusions

Do not bill with:994909948799491G0511G0136

Key Modifiers

25Significant, separately identifiable E/M service.
G0568-G0570Mandatory add-ons if Psychiatric CoCM or General BHI is provided within the Level 3 APCM framework.

Operational Requirements

eligibility threshold

Patient must be a Qualified Medicare Beneficiary (QMB) or dual-eligible for Medicare and Medicaid.

condition threshold

Patient must have two or more chronic conditions expected to last 12+ months or until death.

sdoh integration

Practices must perform social determinants of health (SDOH) screenings and document the navigation of identified barriers (e.g., housing, transportation, food security).

frequency

Billed once per calendar month.

Compliance Checklist

Detailed time tracking (cumulative for the month).
Specific clinical decision-making documentation.
Electronic care plan availability and access log.

Audit Defense

No specific audit defense elements defined.

2026 Update

NEW 2026 CODE. Represents the highest level of monthly primary care management reimbursement for the most complex patients.

Common Clinical Scenarios

No clinical examples provided.

Target Specialties & Utilization

Primary CareGeriatricsSafety Net Clinics

Typical Clinical Indications (ICD-10)

I50.9 & E11.9 (HF & DM with social complexity)N18.6 (ESRD) & I10 (HTN)F03.90 (Dementia) & G20 (Parkinson's) in a dual-eligible patient

Frequently Asked Questions

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CPT Code G0558 for APCM Level 3 - 2026 Reimbursement & Rules