How To: Apply a Modifier


Modifiers are two-character descriptors added to a service, or CPT, code, designed to provide additional information about how a service was rendered. Modifiers are generally categorized as one of two types: functional (Level 1) or informational (Level 2). When entering modifiers, it is best to put functional modifiers first, as they often affect the reimbursement rate for services. Claims can include up to four modifiers.

While many modifiers are considered industry standard, not every payer accepts modifiers, and not every modifier is applicable to every service code. Consult your payer contracts or contact Provider Relations for your payers to learn if you should include modifiers with your claims.

In TherapyNotes, modifiers are manually added per billing line item.

Role Required: Practice Biller or Biller for Assigned Patients Only

To apply a modifier to a service:

  • Click Patients > Patient Name > Patient Billing tab
  • Click on the date of service


  • A dialog with additional details about the date of service appears. The Billing tab should be selected
  • Enter a two-character modifier code in one of the Modifiers fields
Quick Tip: As a general rule, try to keep your most important modifiers in the first two fields. Although claims can include up to four modifiers, some insurance companies only look at the first two.
  • Click the Save Changes button
Have more questions? Submit a request


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    Alicia Young

    Is there a way to autofill modifiers for certain insurance companies?

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    Thank you for your suggestion. We value your input and will forward your feedback to management for review. Thank you!

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    Peter Wyngaard

    And also autofill based on clinician (AH, AJ, etc), and clinician-insurance combinations (e.g., HO for supervisory).

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    We plan on updating how modifiers are entered in a future update. If you have any additional questions please contact support at 215-658-4550 or via email at