Direct comparison
Modifier 26 vs TC: PC or Technical?
Modifier 26 bills the physician's interpretation; TC bills the equipment and facility work. The PC/TC indicator decides if either applies at all.
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How do Modifier 26 (PC), Modifier TC compare side by side?
The table below compares Modifier 26 (PC), Modifier TC across 9 procurement-relevant dimensions, from what it reports through governing citations.
Side-by-side comparison
| Dimension | Modifier 26 (PC) | Modifier TC |
|---|---|---|
| What it reports | The physician's interpretive work: reading the study and producing a signed written report | Everything that produced the study: equipment, supplies, technologist time, facility overhead |
| RVU components included | Physician work, practice expense, malpractice expense | Practice expense and malpractice expense only — no physician work |
| Governing eligibility check | Code's PC/TC indicator must be 1, or 6 (lab physician interpretation) | Code's PC/TC indicator must be 1 — indicator 6 specifically forbids TC |
| Documentation required | A discrete, attributable, signed written interpretive report | Evidence the billing entity owned or bore the cost of the equipment, supplies and staff |
| Hospital inpatient/outpatient rule | No equivalent bar — the interpreting physician bills 26 regardless of where the technical work occurred | Generally not separately payable to a supplier for hospital patients; paid to the hospital instead, and billed TC claims are a common recoupment target |
| Clinical laboratory (chemistry/hematology) tests | Not applicable — these codes generally carry no professional component to split | Not applicable for the same reason; the test is paid under the clinical lab fee schedule |
| Anatomic/molecular pathology | Applies when a physician reads and interprets the stained tissue | Applies to the laboratory that performed the technical preparation — but only if a technician, not a physician, did the reading |
| What billing globally (no modifier) means | N/A on its own — global means one entity is billing both components together | N/A on its own — same global-billing scenario |
| Governing citations | Medicare Claims Processing Manual Pub. 100-04 Ch. 13 §20.1–20.3.2; Ch. 23 §50.6 | Same manual and sections; Ch. 12 §20.2 for the hospital-setting bundling rule |
Common questions
Common questions about Modifier 26 (PC) vs Modifier TC
Can modifier 26 and modifier TC ever both apply to the same claim line?
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No — they report two different, non-overlapping halves of a splittable service. A single claim line takes one or the other (or neither, for a global service billed with no modifier), never both at once.
How do I know if a code can be split into 26 and TC at all?
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Look up its PC/TC indicator on the current Physician Fee Schedule file. Indicator 1 means both modifiers are available. Indicators 0, 2, 3, 4, 5 and 9 mean neither is — usually because a stand-alone professional-only or technical-only code already exists for that scenario. Indicator 6 permits modifier 26 but not TC. This is a lookup, not a judgment call.
Why does a technical-component claim get denied after it was originally paid?
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The most common cause is a hospital-inpatient recoupment. Medicare generally does not pay a supplier's TC claim separately for a hospital patient — that payment goes to the hospital instead. A TC line can pay cleanly at submission and still be recouped later, once the hospital's own claim reaches the Common Working File and the service dates are compared.
Does a routine blood test have a professional component to bill with modifier 26?
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Generally no. Clinical laboratory tests paid under the clinical laboratory fee schedule are paid for the test itself, with no separate professional-component split — that's what PC/TC indicators 6 and 8 encode. Anatomic and molecular pathology are the exception and do split routinely.
What does it mean if a code has no PC/TC split at all?
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It means the professional/technical component concept simply doesn't apply to that code (PC/TC indicator 0, most physician visit and procedure codes) or that separate stand-alone codes already exist for the professional-only and technical-only versions (indicators 2, 3 and 4). Either way, appending 26 or TC to that code is an error, not a billing option.
