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CPT 77778 — Apply interstit radiat compl

CPT code 77778 (Apply interstit radiat compl) carries 8.56 work RVUs under the CMS 2026 Medicare Physician Fee Schedule. Total RVUs are 27.93 in a non-facility setting and 27.93 in a facility setting, which at the 2026 conversion factor of $33.40 works out to $932.89 and $932.89 respectively.

8.56
Work RVU
27.93
Total RVU (non-facility)
$932.89
Medicare, non-facility
$932.89
Medicare, facility
Calculate your total wRVUs →

RVU breakdown for CPT 77778

ComponentRVUsWhat it covers
Work RVU8.56Physician time, skill, effort, and stress.
Practice expense RVU (non-facility)18.83Office overhead, staff, supplies.
Practice expense RVU (facility)18.83Overhead when performed in a hospital.
Malpractice RVU0.0Professional liability cost.
Total RVU (non-facility)27.93Work + non-facility PE + malpractice.
Total RVU (facility)27.93Work + facility PE + malpractice.

Professional and technical components

CPT 77778 can be split into professional (modifier 26) and technical (modifier TC) components.

ComponentWork RVUTotal RVU (non-fac)Total RVU (fac)
Modifier 268.5613.7713.77
Modifier TC0.014.1614.16

How Medicare payment is calculated

Medicare multiplies total RVUs by the annual conversion factor. For CPT 77778 in 2026:

SettingTotal RVUConversion factorNational payment
Non-facility27.93$33.40$932.89
Facility27.93$33.40$932.89

These are national amounts. Actual payment is adjusted by the Geographic Practice Cost Index for your locality — check yours with the GPCI lookup.

Billing rules for CPT 77778

Global period
0-day global — no pre- or post-operative period included.
Multiple procedure reduction
No multiple-procedure payment reduction applies.
Bilateral surgery
Bilateral adjustment does not apply.
Assistant surgeon
Not permitted unless documentation supports medical necessity.
Co-surgeon
Not permitted unless documentation supports medical necessity.
Team surgery
Not permitted unless documentation supports medical necessity.

Related codes

Codes in the same CMS family, with their work RVU values.

77762 · 5.62 wRVU77763 · 8.44 wRVU

Questions about CPT 77778

How many work RVUs is CPT 77778?

CPT 77778 is assigned 8.56 work RVUs in the CMS 2026 Medicare Physician Fee Schedule.

What does Medicare pay for CPT 77778?

At the 2026 national conversion factor of $33.40, CPT 77778 pays approximately $932.89 in a non-facility setting and $932.89 in a facility setting before geographic adjustment.

What is the global period for CPT 77778?

0-day global — no pre- or post-operative period included.

RVU values reflect the CMS 2026 Medicare Physician Fee Schedule (conversion factor $33.40). Payment figures are national and unadjusted for geography. Verify against the official fee schedule before using for billing.