
Billing with a 50 indicates a price adjustment to 150% and a 51 indicates an adjustment down to 50%, so basically by adding a 50 and 51, you're asking for 150% and then asking a reduction of 50%, so in the end you get 100%.
Full Answer
What is a 51 modifier used for in medical billing?
Modifier 51 Modifier 51 Multiple procedure s indicates that the same provider performed multiple procedures—other than E/M services—at the same session. You should list the most resource-intense (highest paying) procedure first, and append modifier 51 to the second and subsequent procedures. Use modifier 51 to indicate:
When should you not use modifier 50?
Do not use modifier 50 when “one or both” is in the code description. When deciding whether to use modifier 50, it’s sometimes difficult to determine if the procedure is considered bilateral. An easy way to tell is to consult the Medicare Physician Fee Schedule (MPFS).
What is a mod 51 fact sheet for Medicare?
Modifier 51 Fact Sheet. Multiple surgeries performed on the same day, during the same surgical session. Diagnostic Imaging Services subject to the Multiple Procedure Payment Reduction that are provided on the same day, during the same session by the same provider. Note: Medicare doesn’t recommend reporting Modifier 51 on your claim;

What is the difference between modifier 50 and 51?
Modifier 50 Bilateral procedure describes procedures or services that take place on identical, opposing structures (e.g., shoulder joints, breasts, eyes). Use modifier 51 Multiple procedures to show that the same provider performed multiple procedures (other than E/M services) during the same session.
Does Medicare accept the 51 modifier?
Modifier 51 denotes more than one medical/surgical procedure is being performed by the same physician on the same day during the same encounter. (Does not include E&M services.) Modifier 51 is a Medicare contractor assigned modifier; Medicare does not recommend reporting modifier 51 on your claim submission.
When should you use modifier 51?
CPT guidelines explain the 51 modifier should apply when “multiple procedures, other than E/M services, are performed at the same session by the same individual. The additional procedure(s) or service(s) may be identified by appending modifier 51 to the additional procedure or service code(s).”
What modifier goes first 50 or 51?
You should list the most resource-intense (highest paying) procedure first, and append modifier 51 to the second and subsequent procedures. Use modifier 51 to indicate: Same procedure, different sites. Multiple operation(s), same operative session.
Can you use modifier 50 and 51 together?
Yes, modifiers 50 and 51 can be used together. Most payers and clearinghouses remove modifier 51, because their systems automatically calculate the 50% reduction based on RVU ranking, whether the practice applies mod 51 or not.
What is modifier 50 used for?
Use modifier 50 to report bilateral procedures performed during the same operative session by the same physician in either separate operative areas (e.g., hands, feet, legs, arms, ears) or in the same operative area (e.g., nose, eyes, breasts).
What CPT code is modifier 51 exempt?
Procedure codes that are Modifier 51 exempt and not subject to the multiple procedure reduction rule. 11001+ 11101+ 11701. 11711.
Does modifier 51 affect reimbursement?
Modifier 51 is used to identify the second and subsequent procedures to third party payers. The use of modifier 51 indicates that the multiple procedure discount should be applied to the reimbursement for the code.
Can you use two modifiers on one CPT code?
CPT modifiers are added to the end of a CPT code with a hyphen. In the case of more than one modifier, you code the “functional” modifier first, and the “informational” modifier second.
What does CPT modifier 51 mean?
Multiple ProceduresModifier 51 Multiple Procedures indicates that multiple procedures were performed at the same session. It applies to: Different procedures performed at the same session. A single procedure performed multiple times at different sites. A single procedure performed multiple times at the same site.
What is the correct order for modifiers?
The general order of sequencing modifiers is (1) pricing (2) payment (3) location. Location modifiers, in all coding situations, are coded “last”.
Does Medicare require RT and LT modifiers?
Several DME MAC LCD-related Policy Articles require the use of the RT and LT modifiers for certain HCPCS codes. The right (RT) and left (LT) modifiers must be used when billing two of same item or accessory on the same date of service and the items are being used bilaterally.
When will modifier 50 be unprocessable?
Modifier 50 fact sheet. Effective for claims received on and after August 16, 2019 , services will be rejected as unprocessable when the procedure code reported is inconsistent with the modifier used. The modifier 50 is defined as a bilateral procedure performed on both sides of the body.
Can you have more than one surgery in the same operative session?
When more than one surgical procedure is performed in the same operative session, multiple surgery rules apply. Medicare will allow 100% of the highest paying surgical procedure on the claim plus 50% for the other ASC-covered surgical procedures furnished in the same session. Bilateral procedures should be reported:
When does the 51 modifier apply?
CPT guidelines explain the 51 modifier should apply when “multiple procedures, other than E/M services, are performed at the same session by the same individual. The additional procedure (s) or service (s) may be identified by appending modifier 51 to the additional procedure or service code (s).”. In other words, modifier 51 reports ...
What is modifier 51?
Modifier 51 is a modifier you probably use frequently if your provider performs surgical services. However, this particular modifier is exceptional in regards to where and how it should be appended. This is because for modifier 51, appropriate coding must take into consideration the RVU (relative value units) of the performed CPTs in order ...
Why is modifier 51 important?
As with all matters of provider service billing, it is important that billing staff be proactive and stay informed about the billing industry and payer standards. Learning and adapting to any changing necessity of modifiers will help the practice as a whole stay ahead of the billing curve. For instance, Medicare no longer requires modifier 51, as their internal systems are programmed to add 51 internally to the correct procedure code (s), and make the appropriate reductions to the remaining services billed. Many payers follow suit to the standards of Medicare, so it is evident that with modifier 51, knowing what payer requirements are in your area will be key to appending modifier 51 correctly avoiding unnecessarily denied claims.
Does Medicare require modifier 51?
For instance, Medicare no longer requires modifier 51, as their internal systems are programmed to add 51 internally to the correct procedure code (s), and make the appropriate reductions to the remaining services billed.
What is modifier 50?
Modifier 50 should be appended to indicate the procedures performed on both the sides (Right and left) on the same day/session. If bilateral procedure code not available, then we should report appropriate unilateral code by appending modifier 50 indicating both the sides procedure performed on same day/session.
How many photocoagulation services are performed at 32 weeks?
Example 1: A baby born at 32 weeks undertook five photocoagulation health care services to both the eyes due to retinopathy of prematurity at six months of age. Provider used an operating microscope during these procedures. These services occurred once per day for a defined treatment period of five days. In this examples procedure is performed ...
When to use -50 modifier?
For Bilateral procedures , use the -50 or -RT/-LT modifiers when an identical procedure is performed on both the Right and Left sides of the body. The policies payors have for the use of modifiers for reporting bilateral procedures can vary. Check with each payor for their preferred method of billing bilateral procedures.
What is a modifier in CPT?
Modifiers are two-digit symbols added to CPT procedure codes to signify the procedure has been altered in some way. Modifiers are accepted by Medicare and most other payers, however, using modifiers correctly can be confusing, since not all payers want modifiers used the same way.
Why are certain modifiers used?
Certain Modifiers are for use because the patient had to return to the OR for another procedure the same day or close to the time another procedure was performed in your facility – which is referred to as the “Global Period” or “Postoperative Period.”.
Can you use a -50 modifier on Medicare?
Billing with one line item can only be done using the -50 Modifier (which is not accepted by Medicare). Do not mix the -50 Modifier with –RT or –LT Modifiers. Do not use Bilateral Modifiers on those CPT codes with verbiage describing procedures as “Bilateral” or “Unilateral or Bilateral”. Since Medicare no longer allows the use ...
What is Medicare Modifier 51?
Modifier 51 is defined as multiple surgeries/procedures. Multiple surgeries performed on the same day, during the same surgical session. Diagnostic Imaging Services subject to the Multiple Procedure Payment Reduction that are provided on the same day, during the same session by the same provider. Note: Medicare doesn’t recommend reporting Modifier ...
Does Medicare pay for multiple surgeries?
Additional Information. Medicare pays for multiple surgeries by ranking from the highest physician fee schedule amount to the lowest physician fee schedule amount. Medicare will forward the claim information showing Modifier 51 to the secondary insurance.
Does bilateral surgery concept apply to codes with status indicator 9?
Concept does not apply. Bilateral surgery concept does not apply to codes with status indicator 9. These procedure codes should not be billed with modifiers 50, LT or RT (e.g., xxxxx, billed with 1 unit).
Can you use modifier 50 with a bilateral procedure code?
Do not use modifier 50 with a procedure code that is described as bilateral, or unilateral or bilateral, in its CPT description. Do not report a bilateral procedure on two lines of service by appending modifier 50 to the second line of service.
Why do payers remove modifier 51?
Most payers and clearinghouses remove modifier 51, because their systems automatically calculate the 50% reduction based on RVU ranking, whether the practice applies mod 51 or not. Some even prefer that you don't use it at all.
Can modifiers be added to claims?
Directly from CMS: " Modifiers should never be added to claims unless the documentation has been reviewed and the use of the modifier is appropriate based on the documentation .". Bottom line here is that you're knowingly and actively submitting claims in which you know the coding is wrong.
Why is modifier 53 needed?
Due to extenuating circumstances or those that threaten the well being of the patient, it may be necessary to indicate that a surgical or diagnostic procedure was started but discontinued. This circumstance may be reported by adding the modifier 53 to the code reported by the physician for the discontinued procedure.
What is the modifier for bilateral procedures?
50 – Bilateral Procedure: Unless otherwise identified in the listings, bilateral procedures that are performed at the same operative session should be identified by adding the modifier 50 to the appropriate five digit code.
When to apply multiple endoscopy rules?
Apply the multiple endoscopy rules to a family before ranking the family with other procedures performed on the same day (for example, if multiple endoscopies in the same family are reported on the same day as endoscopies in another family or on the same day as a non-endoscopic procedure).
Is surgical care covered by Medicare?
In the latter case, the service is generally not covered by Medicare. When the surgical services are performed in a non-teaching setting, report “Non-teaching” in the narrative section of an electronic claim submission, or in item 24D for paper claims.

Defining Modifier 51
Clinical Scenarios
- In order to better understand exactly when to use modifier 51, let’s take a look at some examples of modifier 51 correctly in use for multiple surgical procedures.
A Lessening Need For Modifier 51
- As with all matters of provider service billing, it is important that billing staff be proactive and stay informed about the billing industry and payer standards. Learning and adapting to any changing necessity of modifiers will help the practice as a whole stay ahead of the billing curve. For instance, Medicare no longer requires modifier 51, as their internal systems are programmed to …
Summary
- Understanding correct and appropriate use of modifier 51 will be key to filing correct claims, which will then result in correct payment. Not only does the 51 modifier allow us to code physician services to the highest level of specificity possible, but it ensures the physician is paid accordingly for those services. However, it’s important to stay aware of the most current payer guidelines fo…