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Manage billing modifiers

RehabAlpha assigns billing modifiers to full service-item units and uses them in payor reimbursement calculations. Admins can control which modifiers an arrangement allows and override the modifier set for an individual unit when billing review requires a correction.

The reimbursement arrangement calls these Claim modifiers. Billing details shows them in the Modifiers column.

Before you start​

You need admin access to configure modifier policies, open billing details, or save modifier overrides. To review or override modifiers, the patient-day must also have billing details with at least one full unit.

See Review billing details for a patient-day for the complete billing-details workflow.

Understand when modifiers are applied automatically​

When RehabAlpha creates full service-item units, it establishes an automatic modifier set from the service discipline and clinician licensure:

  • GP, GO, or GN identifies the PT, OT, or SLP discipline.
  • CQ or CO is added when a PT or OT unit is allocated to an assistant.

RehabAlpha does not automatically add KX, 59, or another custom modifier. An admin must add one of these codes with a unit-level manual override when appropriate.

After establishing the automatic set, RehabAlpha applies the active payor reimbursement arrangement's modifier policy. A modifier that is not allowed by the arrangement is excluded from the effective set and from the reimbursement calculation.

Partial units do not have modifiers and cannot be overridden.

Configure the allowed modifiers​

Each payor reimbursement arrangement can allow every valid modifier or only a selected list. The policy applies to modifiers generated automatically and modifiers entered manually.

  1. Open Payors and select the payor.
  2. Open Reimbursements.
  3. Select the reimbursement arrangement.
  4. Click Edit.
  5. Find Claim modifiers.
  6. Under Allowed modifiers, select one of these policies:
    • Allow any valid modifier allows any two-character code that contains uppercase letters or numbers.
    • Only selected modifiers limits automatic and manual modifiers to the codes in Selected modifiers.
  7. Click Save.

If Only selected modifiers has no selected codes, the arrangement allows no modifiers. Include the automatic discipline and assistant codes that the payor expects, as well as any codes admins may need to add manually.

The arrangement's Claim modifiers section displays the saved policy and allowed list when you view its details.

View billing modifiers​

To see the current unit-level modifiers:

  1. Open the patient's admission, therapy case, and evaluation, treatment, or re-evaluation.
  2. Find Services or interventions provided today and click Billing details.
  3. Open Payor reimbursement.
  4. Find the Service-item units table and review the Modifiers column.

The table shows the effective modifiers used in the current calculation. It can also show:

  • A blue Manual badge when an admin saved an override.
  • A struck-through code when an automatic modifier was removed manually.
  • A struck-through warning badge when the reimbursement arrangement excluded a requested modifier.

Medicare Part B reimbursement details on a facility invoice also display the modifiers captured when the invoice was created. That invoice is a snapshot; changing current billing details does not update an existing invoice.

Override modifiers for a billing unit​

Modifier overrides are available for full units when the payor uses Medicare Part B MPFS or Custom fee schedule.

  1. Open Billing details and select Payor reimbursement.
  2. In Service-item units, click Edit modifiers.
  3. Find the unit you need to change and switch it from Automatic to Manual.
  4. Add or remove modifiers. A manual set can contain no more than four unique codes.
  5. Click Save.

Manual mode replaces the unit's complete automatic set with the list you save. If the arrangement uses an allowed list, you can select only codes on that list. With an unrestricted policy, you can also enter another valid two-character code.

To remove an override, click Edit modifiers, switch the unit from Manual to Automatic, and save. RehabAlpha restores the currently calculated automatic set.

Saving an override recalculates the affected billing details. If another update changes the billing details while you are editing, close modifier editing, review the refreshed information, and try again.

Modifier reference​

KX​

KX indicates that the requirements specified in the medical policy have been met. RehabAlpha does not add KX automatically.

For a coverage whose payor has KX threshold tracking configured, the coverage page shows the patient's estimated therapy amount used. Click Open KX tracker to review the PT/SLP and OT totals, qualifying RehabAlpha activity, and external usage entered by staff.

The tracker supports the billing decision, but it does not establish medical necessity or change modifiers. When KX is appropriate, confirm that the reimbursement arrangement allows KX, then add it manually to each applicable full unit in billing details. The override workflow does not validate the therapy threshold or medical-necessity requirements.

59​

59 identifies a distinct procedural service. RehabAlpha does not determine when services are distinct and does not add 59 automatically based on CPT combinations.

When 59 is appropriate, make sure the reimbursement arrangement allows it and add it manually to the applicable full unit. Review each unit separately; one override does not automatically apply 59 to other services on the patient-day.

CO​

CO identifies outpatient occupational therapy furnished in whole or in part by an occupational therapy assistant. RehabAlpha adds CO automatically to an OT full unit classified as an assistant unit.

For Medicare Part B MPFS, the Include assistant payment reduction? setting determines whether CO triggers the assistant reduction in the reimbursement estimate. Turning off that calculation setting does not remove the CO modifier.

CQ​

CQ identifies outpatient physical therapy furnished in whole or in part by a physical therapist assistant. RehabAlpha adds CQ automatically to a PT full unit classified as an assistant unit.

For Medicare Part B MPFS, the Include assistant payment reduction? setting determines whether CQ triggers the assistant reduction in the reimbursement estimate. Turning off that calculation setting does not remove the CQ modifier.

RehabAlpha does not automatically assign an assistant modifier to SLP units.

GP​

GP identifies services delivered under an outpatient physical therapy plan of care. RehabAlpha adds GP automatically to full PT units.

GO​

GO identifies services delivered under an outpatient occupational therapy plan of care. RehabAlpha adds GO automatically to full OT units.

GN​

GN identifies services delivered under an outpatient speech-language pathology plan of care. RehabAlpha adds GN automatically to full SLP units.

Other modifier codes​

With an unrestricted arrangement policy, an admin can manually enter another modifier containing exactly two uppercase letters or numbers. With an allowed-list policy, add the code to Selected modifiers before using it in billing details.

RehabAlpha does not automatically determine the meaning or appropriateness of a custom code.

You should know​

  • Modifier policies belong to reimbursement arrangements. The policy that applies depends on the payor, billing provider, and service date.
  • An allowed list controls which modifiers may be used; it does not cause the selected modifiers to be added automatically.
  • Manual overrides apply to individual full units, not every matching CPT code or every unit on the patient-day.
  • Current billing details can differ from an existing facility invoice because invoices retain the data captured when they were created.