26 Radiology / Pathology / Diagnostic
Last Verified: 2026-09-29

Modifier 26: Professional Component

Modifier 26 indicates that only the physician professional component (interpretation and written report) is being billed, rather than technical equipment or technician costs.

NCCI Policy: Distinguishes physician professional fees from hospital facility Part A fees.
Clinical Field: Radiology / Pathology / Diagnostic
Standard: AMA CPT & CMS HCPCS
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Quick Modifier 26 Summary

What is Modifier 26? Modifier 26 is a medical billing modifier appended to CPT or HCPCS codes to indicate Professional Component. Under official CMS and AMA coding rules, it is applied when modifier 26 indicates that only the physician professional component (interpretation and written report) is being billed, rather than technical equipment or technician costs.

Official guideline source: CMS Medicare Claims Processing Manual & AMA CPT Guidelines.
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When to Use Modifier 26

Radiologist reading a chest X-ray taken on hospital equipment (71046-26).

Clinical Example: Cardiologist interpreting electrocardiogram (93000-26) in the hospital emergency department.
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When NOT to Use (Audit Pitfalls)

Do not bill if the provider owns the equipment and employs the technician in their private office (bill global code instead).

Denial Risk: Appending Modifier 26 without meeting these criteria triggers post-payment claims recoupment under payer audits.

Official Coding Guidelines & NCCI PTP Unbundling

Reported when a physician interprets diagnostic testing performed in a hospital facility or independent testing center.

National Correct Coding Initiative (NCCI) Policy: Distinguishes physician professional fees from hospital facility Part A fees. When two procedure codes form a Column 1/Column 2 edit pair with modifier indicator 1, appending Modifier 26 signals that the criteria for distinct, separate, or unbundled service delivery have been fully met.

Check Code Pairs for Modifier 26 Eligibility
Verify whether your specific CPT code pair allows Modifier 26 override under Q4 2026 CMS files.
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Medical Record Documentation Checklist

To defend against Medicare CERT and commercial payer audits, ensure the patient medical record contains:

Core Documentation Directive: A distinct signed narrative report and clinical interpretation must be present in the medical record.
  • Independent clinical justification documented contemporaneously with the encounter.
  • Clearly designated procedure timestamps, anatomical laterality (left, right, bilateral), or separate anatomical locations.
  • Physician electronic signature authenticated and dated in the electronic health record (EHR).

Frequently Asked Questions: Modifier 26

Does Modifier 26 affect reimbursement payments?

Depending on the code and payer contract, Modifier 26 either adjusts the payment percentage or enables secondary codes to be reimbursed without being bundled into the primary procedure.

Can Modifier 26 be billed with telehealth services?

Yes, if the clinical encounter satisfies telehealth criteria and the specific conditions for Modifier 26 are documented in the virtual medical record.