Are Your Modifier 58 Claims Getting Flagged? Common Billing Errors Surgical Practices Should Review
Learn modifier 58 billing guidelines, documentation requirements, global period rules, and differences from modifiers 78 and 79.
Surgical treatment sometimes requires multiple procedures during a patient’s recovery. Diagnostic surgery may be followed by a surgeon’s plan for further treatment, more extensive surgery or definitive treatment. Medical coding needs to be done accurately for every situation.
Modifier 58 represents qualifying stage or related procedures by the same surgeon during the post op period of another procedure. It allows for the separation of surgical procedures for which separate reporting is mandatory from those that required routine care following the surgery, which may have been covered as part of the global surgery package.
The use of a wrong modifier can lead to delay and claim processing issues. It also adds administrative burden when coding teams and practice managers put to work. When the modifier is not coded correctly, it can lead to claim processing issues and delays in reimbursement. It also makes the manageability of administrative tasks for coding teams and practice managers more difficult.
By grasping the significance of modifier 58, practices can streamline their claims and billing processes, ensure proper reporting for qualifying surgeries, and significantly reduce mistakes.
What Is Modifier 58 in Medical Billing?
Modifier 58 serves to indicate a staged or related procedure/surgery at the post-operative period for an earlier procedure by the same physician.
The modifier is put on when the following service is provided under one of three circumstances, according to CMS.
- The procedure was organized with foresight or at the time of the initial procedure.
- The following procedure is a more comprehensive one than the original.
- The following technique will follow a diagnostic surgical procedure and will be used in therapy.
The billing team appends modifier 58 to the CPT code in the report of the next procedure done. This sends a message as to why this extra service should be reported separately during the first postoperative period. The modifier also impacts on the global period tracking. A new postoperative period starts after the next procedure in the series is billed.
When Should You Use Modifier 58?
The proper use will change according to circumstances of the subsequent surgical service. Billing teams should check which is the qualifier situation, and report it before the modifier.
Strategic or staged surgery.
Planned or Staged Surgical Procedures
A staged procedure is one that is made up of several surgical steps, which are being performed in the context of a structured treatment plan. The surgeon expects further treatment to occur and not an unexpected event after surgery. For instance, in order to rebuild patients may need to be reconstructed in several phases. The initial surgery is the surgeon’s, and the subsequent surgery is scheduled once the first one has healed.
If the next procedure is in the same global period, it is called modifier 58 to denote the staged service. The sequence should be determined in the original operative report or by the treatment plan. This handout should include a description of the procedure (the intervention) that was performed and the connection between it and the original treatment.
To ensure the documentation can future-proof the program, coders should check that it is compliant with the same physician relationship and related requirements that will be applied.
More Extensive Procedures During the Global Period
Subsequent procedures may require greater surgery than the initial surgery. For instance, at first, a surgeon does a lesser wide-ranging operation. Elaborate surgical interventions during the postoperative period are warranted based on further clinical findings.
Modifier 58 might apply when the subsequent procedure meets the more extensive procedure criterion. Details of why the added intervention needs more surgery should be in the medical record. It also should establish the clinical relationship between both procedures.
Original procedure, findings at surgery and treatment that was documented should be reviewed by the billing team. They shouldn’t automatically presume any extra/complicated services qualify.
Therapeutic Procedures Following Diagnostic Surgery
Diagnostic surgery is done to determine or assess a medical situation. The results of the first procedure sometimes determine the requirement for definitive treatment. Modifier 58 is used on the following procedure when diagnosis is performed by a surgical procedure and the following procedure is for a “qualifying therapy.
For instance, a surgeon may conduct a diagnostic biopsy on some tissue that has raised suspicions. Results demonstrate the need for definitive surgery aimed at treatment. A therapeutic intervention is then carried out by the surgeon in the same postoperative situation.
The findings and what they mean is decided by the original diagnostic report. The following operative report should provide a description of the procedure used and the reasons for its use. Merely telling a clinician that a diagnostic procedure has been obtained is not sufficient to support modifier 58. The subsequent service is required to be compliant to the coding requirements.
Modifier 58 and the Global Surgical Period
The surgery period, which can vary from country to country globally, is the period that Medicare uses to calculate the overall surgery cost. Modifier 58 represents additional procedures that are separately reportable during this time period that qualify for reporting as a separate procedure.
Understanding Global Surgery Indicators
Global surgery indicators are assigned for surgical procedures by Medicare. These indicators are used to apply the postoperative payment period.
| Global indicator | Postoperative period | General category |
|---|---|---|
| 000 | 0 days | Certain minor procedures |
| 010 | 10 days | Other minor procedures |
| 090 | 90 days | Major surgical procedures |
Generally, a “zero-day” indicator signifies that Medicare doesn’t assign a typical procedure time after surgery. The 10 day indicator is a procedure date minus other 10 days. A 90-day indicator includes the day of surgery, the surgical procedure date, and 90 days postoperative.
These differences are significant because it affects the subsequent process and whether it enters into an ongoing global process. Remember, not all CPT procedures will have a 10-day or 90-day global period. Look on the Medicare Physician Fee Schedule Look-Up Tool for the appropriate global surgery indicator.
Does Modifier 58 Start a New Global Period?
Yes. A qualifying subsequent procedure reported with it starts a new postoperative period. The new period will occur based on the global surgery indicator for the next procedure. Does not just perpetuate the original procedures post-surgical process.
Consider this example:
| Surgical event | Timeline |
|---|---|
| Original surgery | January 5 |
| Subsequent staged procedure | February 9 |
| Original global period | 90 days |
| New global period | Determined by the subsequent procedure’s indicator |
The billing team needs to monitor the new postoperative period and keep it on its own monitor. This impacts claims and services after surgery in the future.
How Modifier 58 Affects Surgical Reimbursement
A qualifying subsequent procedure is defined when it is a separate procedure that is reportable under applicable global surgery rules as Modifier 58. Medicare pays based on the following procedure’s CPT code and fee schedule policies. Other payment factors like coverage, medical necessity, documentation etc. will also affect reimbursement.
The new modifier is not intended to be a “full payout” modifier nor to replace other coding restrictions. Additional requirements may be needed for commercial insurers, such as authorization, edits to claims and modifier recognition. Individual payer policies should be reviewed prior to claim submission by billing.
Modifier 58 vs. Modifier 78 vs. Modifier 79
Modifier 58, 78 and 79 will indicate various services rendered during an already established postoperative sequence. Knowing what modifier to use requires the knowledge of the relationship between original and subsequent procedures.
Modifier 58 vs. Modifier 78
Modifier 58 indicates that a procedure was performed for a specific procedure. Modifier 78 means a second procedure or surgery that is unrelated and occurs within the postoperative period in the same provider’s.
A surgeon for example, arranges an intervention two that will follow another intervention as part of the initial treatment plan. During the first global period the patient is seen again for the added procedure. Modifier 58 might apply. In another case the patient needs to go back into the operating room for another procedure when it wasn’t expected. Modifier 78 might apply when its requirements are met.
For reimbursement purposes, it’s a little different:
- Modifier 58 starts a new postoperative period for the subsequent procedure.
- Modifier 78 usually restricts Medicare payments to the part of the “return” procedure that takes place during the operative phase of the cited procedure.
- Modifier 78 is used to report a new global period, but not an extra one.
Importantly, modifier 78 does not just have to be used for the treatment of complications. Additionally, CMS acknowledges it may be used for some other related procedures that necessitate the use of an operating room or procedure room return.
Modifier 58 vs. Modifier 79
Modifier 79 refers to a procedure that was not part of the same postoperative period by the same provider. Modifier 58 is not used to describe the next surgical service as an “other” stage or related service to the first (58) surgical service, but only if it is truly a separate stage of the same procedure.
An example would be a patient that has a knee surgical procedure followed by a separate wrist surgical procedure throughout the same period of time following surgery. When the requirements are met, Modifier 79 is used for the procedure that is not related to the procedure identified by the first listed procedure modifier.
One of the major differences between procedures is that:
- Modifier 58 defines procedures that are related or staged.
- Modifier 79 is used for subsequent procedures for another medical condition that occurs during the postoperative period.
Also, Medicare rules require modifier 79 to begin a new procedure for the one unrelated procedure.
Modifier Comparison Table
| Modifier | Clinical circumstance | New global period? |
|---|---|---|
| 58 | Qualifying staged or related procedure | Yes |
| 78 | Unplanned return for related procedure | No |
| 79 | Unrelated procedure | Yes |
Modifier selection must reflect the actual service and clinical circumstances. Verify CPT instructions, Medicare guidance, and individual payer policies before submitting the claim.
Modifier 58 Billing Examples and Real-World Scenarios
The situations below will illustrate the way that the billing team should process subsequent surgical claims. They serve example purposes only, and not coding rules.
Example 1: Planned Second-Stage Surgical Procedure
A surgeon creates a plan to treat a person in which two types of surgery are needed. The initial clinical concern is addressed during the first procedure and the second procedure is to perform the planned treatment.
The procedures will be documented by the surgeon in the initial procedure in a staged approach. During the first procedure’s global period the patient returns for the second procedure.
Billing decision: The subsequent procedure may be a planned surgical stage, Modifier 58 may be required. Operative Reports should substantiate the relationship and the requirements that apply.
Example 2: More Extensive Surgical Intervention
The first surgical procedure is performed in a patient.In a patient, the surgery is performed on their first time. Further clinical evaluations determine the need for a wider procedure.
The surgeon notes the reasons for additional intervention and the need for more sophisticated surgical treatment. The second procedure takes place in the original post-operational period.
Billing decision: Modifier 58 will be appropriate when the subsequent procedure is performed for the more expansive procedure. The differentiating features of both interventions should be made clear in the operative reports and justify the need for further treatment.
Example 3: Therapeutic Procedure After Diagnostic Surgery
This is when a surgeon carries out a surgical test that allows them to see if the tissue looks concerning or suspicious. The results confirm a need for specific treatment. During the same time window, as well as the global period, the surgeon then carries out the therapeutic intervention.
Billing decision: Modifier 58 might apply because the subsequent procedure provides therapy following diagnostic surgery. The findings should be backed up with the diagnostic report. In the next operative report, the definitive treatment and its medical indications should be described.
Documentation Requirements for Modifier 58
There should be supporting medical documentation for the follow-up procedure. Each billing team needs to review the following records prior to releasing the claim.
Original Operative Report
The starting place for analysis of subsequent service is set in the operative report of the previous service. It should explain what the initial procedure was, observations made in the clinic and the treatment decisions made. If more extensive procedures are expected the treatment plan should be described.
Review these details:
- Surgery’s original purpose and procedure.
- An operative finding and/or diagnosis that is relevant.
- Attending for expected treatment (if relevant)
- Relationship among the planned procedures.
- Original flag from procedure that specifies whether it is surgery in the global area.
Subsequent Operative Report
The following operating report is an explanation of the extra work done. It should note procedure performed and its clinical significance. The surgeon should record pertinent matters to justify further therapy.
If a more involved procedure is required, the report should include reasons for the need to use more surgical intervention. In therapeutic procedures it should tie the treatment in with the previous diagnostics.
Medical Necessity and Treatment Rationale
The medical record should provide the reasons for the next procedure being clinically justified. Documentation should have supporting information for the intended sequence of treatment, if it is a staged procedure. In cases involving more intensive interventions, it should determine why it is necessary to implement an expanded intervention.
If therapists are performing any procedures, the diagnostic results should back up the necessity for definitive therapy. Absolutely, assumptions should not be made about the surgeon’s intentions; coders should not assume anything. They should ask for clarification if the record is not clear in terms of clinical circumstances.
How to Prevent Modifier 58 Billing Errors and Claim Denials
Consistent review process is key for accurate modifier reporting. Medical offices should always confirm procedure information, worldwide periods, documentation and payers requirements prior to the surgical claim submission process.
Verify Global Period Information
Check original CPT code and the coding for global surgery. Check on the original surgery date and ascertain if 2nd surgery is a follow on surgery or not. Feel free to use the Medicare Physician Fee Schedule Look-Up Tool for Medicare global surgery indicators. Review each commercial payer’s policy individually.
Confirm the Clinical Circumstances
Determine which qualifying situation supports:
- Prospective planning or staged treatment.
- A more extensive subsequent procedure.
- Therapy following diagnostic surgery.
When none of the above applies, determine if another modifier is warranted, or if another coding treatment is needed.
Review NCCI Edits and Payer Policies
The National Correct Coding Initiative (NCCI procedure codes) is used to identify procedure combinations that are not typically reported together.
Billing Teams: Be sure to check procedure-to-procedure edits and Correct Coding Modifier Indicators. Only use it when clinical situations and applicable edit rules warrant its usage. A modifier must never be added solely to bypass an edit.
Perform Pre-Submission Claim Audits
A pre-submission review can allow errors to be identified prior to claims going to the insurance companies.
Check the following:
- Correct CPT code for the subsequent procedure.
- Appropriate modifier selection.
- Correct period computation, worldwide.
- Supporting operative documentation.
- Applicable authorization requirements.
- Accurately complete service dates and claim details.
This review minimizes preventable coding mistakes and avoids repeats which are cumbersome and costly.
Track Denial Patterns and Correct Underlying Errors
Review claims that have not been covered by the global period, missing modifiers and documentation. Analyze the trends of patterns of reviews by payer, procedure, and denial reason. Know which of the problem areas requires coding, documentation, authorization or payer processing. Address the root cause problem and resubmit the claim. Failure to do a thorough investigation of the original problem may result in duplicate efforts.
How Medical Billing Companies Manage Modifier 58 Claims
It’s essential for medical coding and billing staff and practice managers to communicate with one another to handle surgical modifiers. Claim review and reimbursements can be done in a regular way, and consistent workflow in claim reviews and payments can be provided to practitioners with specialized billing support.
Surgical Coding and Modifier Review
Operative documentation is reviewed for operative and circumstances are assessed by billing specialists for subsequent procedures. They differentiate between qualifying staged procedures and related unplanned returns and unrelated surgical services. This Review will help minimize the reporting of modifiers incorrectly and the need for claim corrections.
Global Period and Claim Scrubbing
Claim scrubbing can be helpful to discover coding inconsistencies before the insurance company is submitted for claims. Billing teams review for CPT, Global surgery markers, combinations of modifiers, and specific requirements of payers. Qualified coding specialists look at intricate surgical claims and documentation, and automated checks assist with the process.
Denial Management and Claim Follow-Up
Billing specialists will look into the reason for the surgical claim’s denial when an insurer denies it. They offer coverage information, operative reports, claim processing information and audits for coding accuracy. When a correction is required, it’s up to the team what to do now. If the original coding is accurate, one can determine if it is a request for reconsideration or appeal.
Revenue Cycle Monitoring and Financial Reporting
Beyond claim-to-surgical process, there is need of ongoing monitoring through accurate surgical billing. Claim Acceptance, Reimbursement, Outstanding Balances, Denial patterns are monitored by Billing teams. Financial reporting on a regular basis allows practice administrators to learn about problems with the collection.
These insights can help to improve billing decisions and revenue cycle visibility.
Improve Surgical Claim Accuracy With Billing Care Solutions
When wrong surgical modifier codes are reported, it causes unnecessary issues for the medical practice in the way of reimbursement. Consider staged procedures, global surgical periods and supporting operative documentation when using modifier 58. Healthcare practices benefit from expert medical billing and coding support, claim scrubbing and denial management services offered by Billing Care Solutions.
Top notch support teams in the USA run practices in over 50 specialties. Sleek Account Managers, cutting edge claim scrubbing and daily financial reporting help practices stay as fully informed as ever about their revenue cycles. From problems with surgical modifiers to global period edits and delayed claims payments, billing workflow is important to your practice’s struggles.
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