Aetna's November 2026 Billing Changes: SGRT Payment Cap and a New Home ESRD Claims Review

Two New Claim Edits Take Effect November 1 and 14 and Could Start Denying Radiation Therapy and Home Dialysis Claims

Rcmaxis Billing & Policy Update  ·  Posted October 30, 2026  ·  Source: Aetna OfficeLink Updates, August 2026 edition

What's Changing and When

Aetna published both changes in its August 2026 OfficeLink Updates bulletin, and they apply to commercial and Medicare members alike. The first hits radiation oncology billing directly. CPT 77436 covers Surface Guided Radiation Therapy, the camera-based positioning technology that helps a patient hold still and breathe consistently during treatment. Some practices have been billing 77436 once per session across a course of daily treatments. Starting November 1, 2026, Aetna will limit reimbursement to one unit of 77436 for the entire course, regardless of how many individual sessions that course includes. Claims that come in with multiple units during the same course are flagged for denial or adjustment under the new policy.

The second change targets home dialysis billing. Beginning November 14, 2026, Aetna is rolling out what it calls a claims validation enhancement for professional claims billed with ESRD home dialysis monthly management codes 90963 through 90966. These are the age-banded codes practices use to bill the physician's monthly management of a patient on home dialysis, and Aetna will now check that the place of service reported on the claim actually matches a home-dialysis setting before paying it. A claim billed with an inappropriate POS gets denied, and Aetna states the change is meant to align with existing CMS place-of-service reporting guidance, not introduce a new standard from scratch.

The SGRT Billing Pattern That Now Triggers a Denial

A typical course of external beam radiation runs anywhere from five to upward of thirty-five daily fractions, depending on the diagnosis and treatment protocol. If your practice has been attaching 77436 to each daily treatment session as a matter of workflow convenience, rather than billing it once at the point SGRT is set up and verified for that course, every session after the first will now deny or get adjusted back out under Aetna's new rule. On a mid-sized radiation oncology practice running even a handful of SGRT-tracked courses a month, that's a recurring denial pattern that shows up as a steady trickle of write-offs if nobody catches the root cause.

The fix is a one-time workflow correction, not a technology change. Bill 77436 a single time per course, tied to the treatment-planning and simulation documentation that supports it, and make sure your charge capture system or EMR template isn't set to auto-populate it on every daily fraction. Aetna's bulletin points practices to its Radiation Therapy Payment Policy on the Availity provider portal for the full coding detail behind the limit.

Home ESRD Codes 90963-90966: Why Place of Service Now Matters

CPT 90963-90966 cover the monthly capitation-style management of a patient on home dialysis, split by age band: 90963 for patients younger than 2, 90964 for ages 2 through 11, 90965 for ages 12 through 19, and 90966 for patients 20 and older. These codes are specific to home dialysis management, which means the place of service reported on the claim has to actually reflect a home setting, not a facility-based dialysis center billed under the wrong code family by habit or legacy template.

Starting November 14, 2026, Aetna will run every claim billed with 90963-90966 through a POS-appropriateness check before paying it. Get the POS code wrong, even on a patient genuinely being managed on home dialysis, and the claim denies. Aetna frames this as consistency with existing CMS guidance on POS reporting, which means a practice that's already coding POS correctly for Medicare ESRD claims shouldn't see much change; the exposure sits with practices whose home dialysis claims have been defaulting to a facility POS out of habit.

What to Do Before Both Effective Dates

Both changes are correctable in a single billing-team review, not a system overhaul. For SGRT, audit your last three months of 77436 claims by course of treatment rather than by date of service, and confirm you're not billing it more than once per course anywhere in your radiation oncology volume. For home ESRD, pull every active 90963-90966 patient and confirm the POS code on file matches where they actually receive dialysis management, correcting it in your EMR and billing system before November 14.

Our ESRD and dialysis billing guide covers the broader coding and coverage rules this POS review sits inside, and our radiation oncology billing guide walks through the treatment-course billing patterns that the SGRT limit now affects directly.