Glossary · Reimbursement

Professional component (-26)

Modifier -26 (Professional Component) is appended to a CPT code when a physician provides only the interpretation and written report of a diagnostic service—not the equipment, supplies, or technician time. It tells the payer to reimburse the cognitive and documentation work alone, separate from the technical component.

Verified May 8, 2026 · 6 sources ↓

Drawn from NovitasCMSAAPCPremeraMedsolercm

Definition

Source · Editorial summary grounded in 6 cited references ↓

When a diagnostic service is divided between two parties—typically a physician and a facility—the work splits into two billable pieces. The professional component covers everything the physician contributes: supervising the acquisition of the study, interpreting the findings, and producing a separate, signed, written report. Appending modifier -26 to the base CPT code signals that only this physician-side work is being billed. The facility or entity that owned and operated the equipment, employed the technician, and supplied the consumables bills the same CPT code with modifier TC.

In orthopedics, the scenario arises routinely. A surgeon reads an MRI of a knee that was performed on a hospital-owned scanner and documented by a hospital radiology technician. The hospital bills the MRI code with modifier TC; the surgeon bills the identical MRI code with modifier -26. Neither party bills the global (unmodified) code, because neither party performed both components. If the surgeon had performed the study on in-office equipment with in-office staff, the global code—no modifier—would be correct.

Not every CPT code is eligible for component splitting. CMS assigns each procedure a PC/TC indicator in the Medicare Physician Fee Schedule database. A value of '1' means the code can be billed globally, with -26, or with TC. A value of '2' means the code is professional-component-only by definition and should never carry modifier -26. Evaluation and management codes and anesthesia codes are never billable with -26 under any circumstance.

Why it matters

Missing or misapplying modifier -26 directly affects payment and compliance. If a surgeon in a hospital-based setting bills the global code without -26, the claim will either deny outright or trigger a duplicate-billing flag because the facility has already submitted the TC. Conversely, appending -26 to a code with a PC/TC indicator of '2'—a stand-alone professional-component code like CPT 93010—is a billing error that can draw payer audits and recoupment demands. With CMS and commercial payers intensifying modifier-misuse audits in 2026, incorrect -26 use on imaging and diagnostic codes is a documented trigger for post-payment review.

Common mistakes

Where people most often go wrong with this concept.

Source · Editorial brief grounded in cited references ↓

Billing the global code (no modifier) when the practice used hospital-owned imaging equipment—this creates a duplicate-billing conflict with the facility's TC claim and will result in denial or recoupment.
Appending -26 to CPT codes that carry a PC/TC indicator of '2' (professional-component-only stand-alone codes), such as ECG interpretation codes, which already describe only the physician's work and cannot be split further.
Appending -26 to evaluation and management codes or anesthesia codes, neither of which have a technical component and are never eligible for component splitting.
Failing to produce a separate, signed, written interpretation report before billing -26—payers treat the written report as a documentation prerequisite, and its absence is a common audit finding.
Re-reading a prior interpretation performed by another physician and billing -26 for it—modifier -26 covers an original interpretation, not a second opinion re-read of another provider's completed report.
Placing modifier -26 in the second modifier field rather than the first, which can cause system-level claim edits and delays under some payer adjudication platforms.

Related codes

Codes commonly involved when this concept appears in practice.

CPT

ICD-10

M17.11 M51.16

Modifiers

59 Distinct procedural service LT Left side RT Right side

Frequently asked questions

Source · Generated from the editorial pipeline, verified against 6 cited references ↓

01When does an orthopedic surgeon bill -26 instead of the global code?

When the surgeon interprets a study—such as a knee MRI or bone density scan—performed on equipment owned by a hospital or imaging center rather than the surgeon's own practice. The global code is correct only when the surgeon's practice owns the equipment and employs the technician.

02Does billing -26 require a written report?

Yes. The professional component is defined in part by the production of a separate, distinct, signed written report. Billing -26 without that documentation is a compliance exposure and a common reason payers deny or recoup professional-component claims on audit.

03Can -26 be used with any CPT code?

No. Only codes with a PC/TC indicator of '1' in the Medicare Physician Fee Schedule database support component splitting. Codes with an indicator of '2' are professional-component-only by design and must never carry -26. E/M and anesthesia codes are never eligible.

04What happens if both the physician and the facility bill the global code for the same study?

Both claims will not be fully paid. The payer will treat one as a duplicate and deny it, or audit both submissions. The correct approach is physician bills CPT + modifier -26 and facility bills the same CPT + modifier TC.

05Does the 2026 CMS efficiency adjustment affect -26 reimbursement for orthopedic imaging?

Yes. The CY 2026 Physician Fee Schedule final rule includes a 2.5% efficiency adjustment targeting diagnostic imaging among other procedural services, which compresses the allowable on professional-component imaging claims submitted by orthopedic practices billing under Medicare.

06Can a physician bill -26 for re-reading another doctor's imaging interpretation?

No. Modifier -26 is reserved for an original interpretation. Re-reading or providing a second opinion on a study already interpreted by another physician does not qualify for -26 billing under Medicare or most commercial payer policies.

Sources & references

Editorial content was developed using the following public sources. Last verified May 8, 2026.

Mira AI Scribe

Mira modifier-selection guidance — Professional Component (-26): Trigger condition: The ordering or interpreting physician does NOT own or control the imaging/diagnostic equipment used in the study. Documentation checkpoint before applying -26: 1. Confirm the report is a standalone, signed, written interpretation authored by the billing physician—not a verbal summary, not a co-signature on another provider's report. 2. Confirm the CPT code carries a PC/TC indicator of '1' in the MPFSDB. If the indicator is '2', the code is already professional-component-only; do not add -26. 3. Confirm the code is not an E/M or anesthesia code—those are never eligible. 4. Confirm -26 is placed in the first modifier field on the claim. Site-of-service logic: - Physician office, physician-owned equipment → bill global (no modifier). - Hospital outpatient, ASC, or facility-owned equipment → bill CPT + -26; facility bills same CPT + TC. - Do not allow the same entity to submit both -26 and TC on the same date for the same patient and code. Audit flag: If a practice routinely bills global radiology codes from a hospital campus, flag for review. The 2026 CMS efficiency adjustment and heightened modifier-misuse audits make this a live compliance risk. Recommend documentation review before claim submission.

See Mira's approach

Related terms

Place of service (POS) Coding

A two-digit code reported on every line of a professional claim (CMS-1500 / 837P) that identifies where the patient physically received the service. POS directly controls whether CMS pays the facility or non-facility rate and is required under HIPAA's standard transaction rules.