Modifier TC
Technical Component
Learn what Modifier TC means, when it is used, how the technical component differs from the professional component, global billing, Medicare PC/TC indicators, practical examples, common denials, AR investigation steps and how Modifier 26 and TC work together.
Modifier TC at a Glance
The essential points every biller, coder and AR caller should know.
Technical Component
Modifier TC identifies the technical component of an applicable service.
Equipment
The technical component generally includes costs associated with equipment and other practice-expense resources.
Technical Resources
Staff and other technical resources needed to perform the service are part of the technical component.
Pair With 26
Modifier 26 identifies the professional component for applicable PC/TC-split services.
What Is Modifier TC?
Understanding the technical component of a medical service.
Simple Definition
Modifier TC is used to report the technical component of an applicable CPT or HCPCS service when the professional and technical components are separately reportable.
For Medicare services with a PC/TC split, CMS describes the technical component as including practice expense and malpractice expense, while the professional component includes physician work along with the applicable practice-expense and malpractice components.
The exact applicability of TC depends on the Medicare Physician Fee Schedule’s PC/TC indicator for the code.
Easy Way to Remember
Think:
“TC = The technical side of the service.”
This generally involves the equipment, supplies, facility resources and technical staff needed to perform the service.
The physician’s interpretation and report are generally part of the professional component when the service has a PC/TC split.
What Does the Technical Component Include?
Think about everything required to technically perform the test or procedure.
Equipment
The equipment and technical infrastructure required to perform the diagnostic service.
Supplies
Applicable supplies and resources associated with performing the technical portion.
Technical Staff
Technical personnel and related practice-expense resources used to perform the service.
Facility Resources
Applicable practice-expense resources associated with the technical performance of the service.
Important
The exact components and payment methodology depend on the CPT or HCPCS code, its PC/TC indicator, Medicare rules and the payer’s policy. Do not assume that every service can be split using TC.
Professional Component vs Technical Component
The easiest way to understand Modifier TC is to compare it with Modifier 26.
Modifier 26 — Professional Component
- Physician/QHP professional work when applicable.
- Interpretation of the diagnostic service.
- Professional report when required.
- Applies to eligible PC/TC-split services.
Modifier TC — Technical Component
- Equipment and technical resources.
- Technical staff and practice expense.
- Performance of the technical portion of the test.
- Applies to eligible PC/TC-split services.
Simple Memory Trick
26 = Professional • TC = Technical • No Modifier = Global Service
The “no modifier = global” concept applies only when the code is actually a PC/TC-split service for which global reporting is permitted.
Medicare PC/TC Indicators
This is one of the most important concepts for Modifier TC billing.
| Indicator | Meaning | Can TC Be Used? | Example / Key Point |
|---|---|---|---|
| 0 | Physician service code | No | PC/TC concept does not apply. |
| 1 | Diagnostic test or radiology service | Yes | Modifiers 26 and TC can generally be used. |
| 2 | Professional component only | No | Stand-alone professional component code. |
| 3 | Technical component only | No | The code already represents the technical component. |
| 4 | Global test only | No | PC/TC modifiers are not applicable to the global-only code. |
CMS Rule to Remember
CMS identifies indicator 1 as diagnostic or radiology services that generally have both professional and technical components. For these services, Modifiers 26 and TC can be used. CMS also explains that indicator 3 represents technical-component-only codes, for which Modifiers 26 and TC are not used.
Global vs Modifier 26 vs Modifier TC
Understand who performed which part of the service.
| Billing Method | What Is Reported? | Typical Scenario | Modifier |
|---|---|---|---|
| Global | Professional + Technical | Same billing entity/provider arrangement performs both components when global billing is permitted. | None |
| Professional Only | Professional Component | Physician performs/interprets the professional portion while another entity performs the technical portion. | 26 |
| Technical Only | Technical Component | Entity performs the technical portion while another provider performs the professional portion. | TC |
Services Commonly Associated With PC/TC Billing
Examples include diagnostic and radiology services that have a professional and technical component.
Diagnostic Imaging
Certain imaging services may have separately reportable professional and technical components.
Cardiac Testing
Certain diagnostic cardiac services may involve technical and professional components.
Ultrasound
Some ultrasound services are subject to PC/TC billing rules.
CT Services
Certain CT-related services can involve a technical component and a professional interpretation component.
MRI Services
Applicable diagnostic imaging services may be split into technical and professional components.
Other Diagnostic Tests
Always verify the individual CPT/HCPCS code’s current PC/TC indicator before billing.
Important Coding Rule
These are examples of service categories, not a blanket rule that every code in each category accepts Modifier TC. Always check the current Medicare Physician Fee Schedule database and payer requirements for the specific code.
Modifier TC Examples
Practical examples for medical billers and AR callers.
A diagnostic service has a PC/TC split. One entity owns or operates the equipment and performs the technical portion, while another physician provides the professional interpretation.
CPT-TCThe entity performing the technical component may report the eligible service with Modifier TC when permitted.
A physician interprets and reports a diagnostic study, while a separate entity performs the technical portion.
CPT-26The physician may report the professional component with Modifier 26 when the code and payer rules permit.
The same billing entity performs both the technical and professional components of an eligible PC/TC-split service.
CPTThe service may be billed globally without 26 or TC when global billing is permitted.
The CPT code itself is already designated as a technical-component-only code.
TC NOT REQUIREDDo not automatically append Modifier TC. CMS identifies technical-component-only codes as codes for which Modifiers 26 and TC are not used.
A service has a Medicare PC/TC indicator of 0 and represents a physician service.
TC NOT APPLICABLEModifier TC cannot be used because the PC/TC concept does not apply to that code.
A claim is submitted with Modifier TC but the payer denies the line because the code does not support a TC split.
REVIEW PC/TCThe AR caller should verify the current PC/TC indicator before requesting a correction or appeal.
Common Modifier TC Denials
Common technical-component billing problems seen in AR.
Invalid Modifier
The payer indicates that Modifier TC is not valid for the submitted procedure code.
PC/TC Mismatch
The code’s PC/TC indicator does not support the submitted technical-component modifier.
TC Already Included
The payer determines that the technical component is already represented by the billed code or payment arrangement.
Wrong Provider
The payer requires the entity performing the technical component to meet specific billing or enrollment requirements.
Global Billing Conflict
The claim may conflict with another claim or provider billing the professional or global service.
Duplicate Technical Service
The payer identifies another claim containing the same or overlapping technical component.
Place of Service Issue
The submitted POS may not align with the location or billing arrangement for the technical component.
Enrollment Issue
The payer may require the technical-component supplier or entity to be appropriately enrolled.
Documentation Issue
The payer requests documentation supporting performance of the technical portion.
Modifier TC Decision Workflow
Use this workflow before submitting a technical-component claim.
Modifier 26 vs Modifier TC
One of the most important distinctions in diagnostic billing.
| Feature | Modifier 26 | Modifier TC |
|---|---|---|
| Meaning | Professional Component | Technical Component |
| Primary focus | Physician professional work / interpretation | Technical performance / equipment / practice expense |
| Equipment | Generally not the technical equipment portion | Technical equipment and resources are included |
| Interpretation | Generally included when applicable | Not the professional interpretation component |
| PC/TC Indicator 1 | Generally permitted | Generally permitted |
| Indicator 0 | Not applicable | Not applicable |
| Indicator 3 | Not applicable | Not appended because the code already represents TC only |
Quick Memory Trick
26 = Doctor’s professional side
TC = Technical side of the test
ECG Example: 93005 vs 93010
A useful example for understanding why PC/TC indicators matter.
CPT 93005
Electrocardiogram; tracing only, without interpretation and report.
CMS identifies 93005 as an example of a technical-component-only code.
93005Because the code itself represents the technical component, do not automatically append Modifier TC.
CPT 93010
Electrocardiogram; interpretation and report only.
CMS identifies 93010 as an example of a professional-component-only code.
93010Because the code itself represents the professional component, do not automatically append Modifier 26.
Why This Example Matters
A common billing mistake is assuming that every technical service requires “-TC.” CMS’s PC/TC indicator determines whether the modifier is appropriate. CMS specifically lists 93005 as a technical-component-only example and 93010 as a professional-component-only example.
AR Caller Workflow for Modifier TC Denials
A practical denial-management workflow for technical-component claims.
Review the ERA / EOB
Identify the exact denial reason, CARC, RARC and affected claim line.
Identify the CPT/HCPCS
Confirm the exact procedure code billed with Modifier TC.
Verify the PC/TC Indicator
Check the current Medicare Physician Fee Schedule information when Medicare rules apply.
Determine the Component
Confirm whether the claim should represent the technical, professional or global service.
Verify Who Performed the TC
Determine which entity actually performed the technical portion.
Review POS
Verify that the place of service and billing arrangement are consistent with the service.
Check Payer Policy
Review the payer’s current technical-component billing rules.
Check for Duplicate Billing
Determine whether another provider already billed the technical or global service.
Determine Root Cause
Identify whether the problem is coding, provider enrollment, POS, payer policy, duplicate billing or incorrect component reporting.
Correct or Appeal
Submit the appropriate corrected claim or appeal based on the payer’s instructions.
Document the Call
Record representative name, call reference number, filing deadline and next action.
AR Caller Script for Modifier TC
Questions to ask the payer during a technical-component denial.
“I’m calling regarding a claim submitted with Modifier TC for the technical component of the service.”
“Could you please provide the exact denial reason and the applicable CARC and RARC codes?”
“Can you confirm whether the denial is specifically related to Modifier TC?”
“Can you confirm whether the CPT code is eligible for a technical component under your current policy?”
“Does your system recognize a professional and technical component split for this code?”
“Can you confirm whether the issue is related to the PC/TC indicator?”
“Was the technical component already billed by another provider or entity?”
“Is there a specific provider enrollment or billing arrangement requirement for the technical component?”
“If a corrected claim is required, can you confirm the exact correction and filing deadline?”
“If an appeal is appropriate, what documentation should be submitted?”
“May I have the call reference number for our records?”
Modifier TC Documentation Checklist
Information the billing and AR team should verify.
CPT/HCPCS Code
Identify the exact code reported with Modifier TC.
PC/TC Indicator
Verify the applicable Medicare PC/TC indicator.
Service Date
Confirm the date the technical service was actually performed.
Performing Entity
Identify the provider or entity that performed the technical component.
Place of Service
Confirm the POS accurately represents where the service was performed.
Supporting Records
Maintain appropriate documentation supporting performance of the service.
Common Modifier TC Billing Mistakes
Adding TC to Every Diagnostic Code
Not every diagnostic code accepts Modifier TC. The PC/TC indicator must be checked.
Adding TC to a TC-Only Code
If the code already represents the technical component, adding TC may be inappropriate.
Ignoring Global Billing
The billing team should determine whether the service is being reported globally or split between entities.
Confusing TC With 26
TC identifies the technical component, while 26 identifies the professional component.
Ignoring Provider Arrangement
The team should know which entity performed the technical portion before billing it separately.
Assuming Payer Rules Are Identical
Commercial, Medicare Advantage and Medicaid plans may have payer-specific processing requirements.
Modifier TC and Medicare
What Medicare billers should verify.
MPFSDB
Review the current Medicare Physician Fee Schedule Database for the applicable PC/TC indicator.
Indicator
Confirm whether the code is eligible for separate technical and professional component reporting.
MAC
Review applicable Medicare Administrative Contractor guidance.
NCCI
Review applicable National Correct Coding Initiative edits.
POS
Verify the place of service and applicable facility billing requirements.
Payment
Confirm that the claim is priced using the correct technical component amount.
CMS RAC Reminder
CMS currently lists incorrect coding of Modifiers TC and 26 as an approved Medicare fee-for-service recovery audit topic. CMS notes that applicable PC/TC-split codes should be paid at the technical or professional component rate based on the modifier billed.
Modifier TC for Medicaid & Commercial Payers
Medicaid
- Identify the state Medicaid program.
- Verify the Medicaid fee schedule.
- Check whether TC is recognized for the specific code.
- Review Medicaid laboratory or diagnostic-service policy.
- Check MCO-specific requirements when applicable.
Commercial Insurance
- Verify the payer’s current reimbursement policy.
- Confirm whether the service has a PC/TC split.
- Verify provider and facility billing arrangements.
- Review claim-edit requirements.
- Confirm corrected-claim and appeal procedures.
Important
Do not assume Medicare’s PC/TC processing rules automatically determine how every Medicaid or commercial payer processes the modifier. Verify the applicable payer policy.
How to Prevent Modifier TC Denials
Verify the PC/TC Indicator
Check the current code-level indicator before claim submission.
Know the Component
Confirm whether the organization performed the technical or professional portion.
Avoid Automatic TC
Never add TC to every diagnostic service without checking the code’s rules.
Verify POS
Make sure the place of service matches the actual service arrangement.
Check Payer Policy
Review payer-specific billing and reimbursement rules.
Audit Denials
Track TC denials by payer, CPT, provider and root cause.
Modifier TC Quick Cheat Sheet
- TC = Technical Component.
- TC is used for eligible services when the technical component is separately reportable.
- Technical component generally includes applicable practice expense resources.
- Modifier 26 represents the professional component.
- A service without 26 or TC may represent the global service when global billing is permitted.
- Medicare PC/TC indicator 1 generally permits 26 and TC.
- Indicator 0 means the PC/TC concept does not apply.
- Indicator 2 represents professional-component-only codes.
- Indicator 3 represents technical-component-only codes.
- Indicator 4 represents global-test-only codes.
- Do not append TC to a technical-component-only code simply because it represents a technical service.
- Verify the current Medicare Physician Fee Schedule information.
- Verify payer-specific requirements.
- Review NCCI and other applicable claim edits.
Before You Bill Modifier TC
- Confirm the exact CPT/HCPCS code.
- Check the current PC/TC indicator.
- Confirm that the code permits separate technical-component billing.
- Identify who performed the technical portion.
- Confirm the billing entity is eligible to report the service.
- Verify place of service.
- Check whether another entity is billing the professional component.
- Review payer-specific requirements.
- Check NCCI and applicable claim edits.
- Confirm the modifier was transmitted correctly on the claim.
- Document the service and billing arrangement for AR follow-up.
Modifier TC FAQs
What is Modifier TC?
Modifier TC identifies the technical component of an applicable CPT or HCPCS service when the technical component is separately reportable.
What does TC mean in medical billing?
TC means Technical Component. It generally represents the technical side of an eligible diagnostic service, including applicable equipment, technical staff and practice-expense resources.
What is the difference between Modifier 26 and TC?
Modifier 26 identifies the professional component, while TC identifies the technical component for eligible PC/TC-split services.
Can Modifier TC be used with every CPT code?
No. TC is only appropriate when the specific code and payer rules support technical-component reporting. Medicare’s PC/TC indicator is an important reference for applicable services.
What does Medicare PC/TC indicator 1 mean?
Indicator 1 identifies diagnostic tests or radiology services that generally have both professional and technical components. CMS states that Modifiers 26 and TC can be used with these codes when applicable.
What does Medicare PC/TC indicator 3 mean?
Indicator 3 identifies technical-component-only codes. Because the code already represents the technical component, CMS states that Modifiers 26 and TC cannot be used with these codes.
What is a global service?
For an eligible PC/TC-split service, a global service generally represents both the professional and technical components together. Whether global billing is permitted depends on the specific code and payer rules.
Does TC include physician interpretation?
Generally, physician interpretation is part of the professional component rather than the technical component for an eligible PC/TC-split diagnostic service.
Does TC include equipment?
Yes. The technical component generally includes applicable equipment and other practice-expense resources required to perform the service.
Does TC include technical staff?
Technical staffing and related practice-expense resources can be part of the technical component.
Can 26 and TC be billed on the same CPT code?
The professional and technical components may be separately reported by different billing entities when the code and payer rules permit. The same billing entity should not simply append both modifiers to create additional payment.
Is Modifier TC the same as a technical-component-only CPT code?
No. A technical-component-only code already represents the technical portion. Modifier TC is used to identify the technical component of eligible PC/TC-split services.
Can an AR caller appeal a TC denial?
Yes, when the technical component was correctly reported and the payer’s denial is inconsistent with applicable policy. First verify the CPT, PC/TC indicator, payer policy, provider arrangement and claim history before appealing.
What should I check first for a Modifier TC denial?
Start with the ERA/EOB denial reason, then verify the CPT/HCPCS code and current PC/TC indicator. Next review the billing arrangement, POS and payer policy.
Can Modifier TC be used with ECG code 93005?
CMS identifies 93005 as a technical-component-only example. Because the code already represents the technical component, Modifier TC is not appended simply to indicate that it is technical.
Can Modifier 26 be used with ECG code 93010?
CMS identifies 93010 as a professional-component-only example. Because the code already represents the professional component, Modifier 26 is not appended simply to identify it as professional.
Does every radiology code accept TC?
No. Radiology is a common area where PC/TC billing occurs, but the specific CPT/HCPCS code and its current PC/TC indicator must be reviewed.
Does Medicare always pay the TC component separately?
Not automatically. Payment depends on the code’s PC/TC structure, coverage, provider eligibility, applicable edits, place of service and other Medicare payment requirements.
What is the easiest way to remember Modifier TC?
Remember: 26 = Professional and TC = Technical.
Official CMS References
Use official CMS resources when verifying current Medicare technical-component billing rules.
Coding Disclaimer
This educational page is intended for medical billing, coding and RCM education. CPT code descriptions and proprietary CPT content are copyrighted by the American Medical Association. Always verify the current CPT codebook, CMS guidance, Medicare Administrative Contractor requirements and individual payer policies before submitting a claim.
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