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What Medicare just changed

The other half of healthcare finally has a code.

On January 1, 2024 Medicare began paying physician practices for the work that decides whether their seriously ill patients actually get better — transportation, food, caregiver coordination, behavioral-health navigation. The program is called Principal Illness Navigation (PIN).[1] This page explains why it matters, who qualifies, what it pays, and why a physician office cannot deliver it on a spreadsheet.

CMS PIN — live since 2024G0023 / G0024For physician offices & NPsNon-clinical, billable

Part 01

The hidden crisis.

More than two-thirds of what determines a person's health happens outside a clinic — food, transport, housing, caregiving, behavioral health, social isolation.[6] For a healthy 30-year-old this is invisible. For a 78-year-old on chemotherapy, an HIV-positive patient with substance use disorder, or a frail Medicare patient with advanced heart failure, it is the difference between staying home and ending up back in the hospital.

There are roughly 67 million people enrolled in Medicare today.[4] The U.S. records about 2 million new cancer cases every year.[5] Roughly 53 million Americans serve as unpaid family caregivers — and most are also working full-time.[7] The non-clinical pressure on these households is enormous, and historically Medicare paid for none of the work that addresses it.

~67M

Medicare enrollees

~2M

new cancer cases / yr

~53M

unpaid family caregivers

Jan 1, 2024

PIN program live

Part 02

Why traditional care fails seriously ill patients.

A physician office is built to deliver clinical care: diagnose, prescribe, treat, follow up. It is not built to coordinate a chemo ride from a daughter who is back at her job, or to find a county food pantry that delivers in a specific ZIP code, or to call a behavioral-health specialist who actually has openings, or to teach a caregiver how to manage a feeding tube without burning out.

And historically, even when physician practices did this work — and many do, every day — there was no way to bill for it under Medicare. So it stayed invisible: an unpaid favor from the office's social-minded staff, a sticky note on a triage desk, a phone call between visits.

The result is the seriously-ill ER cycle: patient gets sicker between visits because a non-clinical need was missed, ends up in the ED, gets admitted, gets discharged with the same unmet need, and re-presents weeks later. Caregivers collapse. Treatment plans fail. Outcomes slide. Costs explode.

Part 03

CMS's answer: Principal Illness Navigation.

In the CY2024 Physician Fee Schedule final rule, CMS created a brand-new family of services for "auxiliary personnel under the general supervision of a billing practitioner" to deliver person-centered support to a patient with a serious, high-risk condition.[2] Medicare.gov puts it bluntly: PIN services help a patient "identify and connect with appropriate clinical and support resources."[1]

CMS named nine specific service elements that a PIN program is expected to address. Navigate Care's checklist mirrors them one-for-one:

  • 01Person-centered assessment of health-related social needs
  • 02Practitioner, home, and community-based care coordination
  • 03Health education tailored to the patient's serious illness
  • 04Building patient self-advocacy skills
  • 05Health-care access / health-system navigation
  • 06Facilitating behavioral health treatment when needed
  • 07Identifying and addressing communication and language barriers
  • 08Social and emotional support
  • 09Leveraging lived experience (peer support, where applicable)

CMS calls out that PIN-Peer Support variants (G0140 / G0146) are designed for certified peer support specialists, particularly for behavioral health and substance use disorder navigation.[3]

Part 04

Who qualifies.

CMS's eligibility bar is intentionally specific:[1]

  • A serious, high-risk condition expected to last ≥3 months
  • Examples named by CMS: cancer, HIV, sickle cell, dementia, advanced heart failure, substance use disorder
  • At risk of hospitalization, nursing-home placement, sudden worsening, decline, or death
  • An initiating E/M (or qualifying) visit with the billing practitioner before PIN can begin
  • Documented patient consent — including cost-sharing disclosure — at or before the first PIN service of the month

In practice, that captures most active oncology patients, advanced heart failure, advanced COPD, dementia, end-stage renal disease, sickle cell, HIV with comorbidity, and a wide range of substance use disorder cases — exactly the populations whose outcomes are decided outside the exam room.

Part 05

The codes.

PIN is billed in calendar-month time increments by the supervising practitioner, using HCPCS G-codes published in the CY2024 Physician Fee Schedule.[2] National-average payments below are illustrative — your locality, payer mix, and any geographic adjustment will move the number; always confirm in the CMS Physician Fee Schedule Look-Up Tool.[8]

G0023~$79

PIN services — first 60 minutes per calendar month, by certified or trained auxiliary personnel under general supervision of a billing practitioner.

G0024~$49

PIN services — each additional 30 minutes in the same calendar month (add-on to G0023).

G0140~$79

PIN — Peer Support Services — first 60 minutes per calendar month, furnished by a certified peer support specialist.

G0146~$49

PIN — Peer Support Services — each additional 30 minutes (add-on to G0140).

Crucially, PIN can be billed alongside other care-management codes (CCM, PCM, BHI), and concurrently with the SDOH risk-assessment code G0136 and Community Health Integration G0019/G0022, as long as time is not double-counted.[3]

Part 06

Why physician offices need software, not spreadsheets.

PIN is conceptually simple. Operationally it is unforgiving. To bill defensibly each calendar month, the practice must produce, per patient: documented eligibility from a qualifying E/M; consent on file with cost-sharing disclosure; the supervising practitioner's identity; the navigator's identity; the specific PIN service elements addressed; the activities performed; and time-stamped minutes that cleanly cross the 60-minute threshold for G0023 and each subsequent 30-minute increment for G0024.

A spreadsheet cannot do this at scale. It cannot dial the patient and time the call. It cannot transcribe the conversation, capture the patient's preferred reminder time, and turn it into a recurring task. It cannot stop the clock at the right minute, identify the threshold crossing, and produce an audit packet.

A platform can. Navigate Care is that platform: built around the calendar-month minute, the audit trail, and the way physician offices actually run.

Part 08

The revenue math.

Take the most common case: a practice running PIN for 100 eligible patients a month, where the average patient earns G0023 (first 60 minutes) plus one G0024 (an additional 30 minutes). At national-average CY2024 PFS rates that's roughly $79 + $49 = ~$128 per patient per month, or about $1,540 per patient per year.

Worked example · illustrative

100

PIN patients / month

~$128

PMPM (G0023 + 1×G0024)

12

months

~$153K

net-new Medicare / yr

Numbers above use CY2024 PFS, non-facility, national-average payments[2] and are illustrative. Actual reimbursement varies by locality (GPCI), payer mix, and any geographic adjustment. Confirm rates in the CMS PFS Look-Up Tool before modeling for your practice.[8]

The revenue is the headline. The harder-to-measure win is the unit economics: when a navigator closes a transportation gap before chemo, or links a patient to a county food bank, or coordinates a behavioral-health warm handoff, the practice avoids the downstream ED visit and the late-stage admission.

Stand up your PIN program in 30 days.

We'll spend 20 minutes with your practice on a PIN readiness review — your patient panel, your eligibility flow, your navigator capacity — and show exactly where Navigate Care turns the work you already do into G0023 / G0024 revenue.

Book a 20-min PIN readiness review