Medical billing is the process of documenting the details of services that patients receive from providers. Some insurance companies ask for modifiers. What is modifier in medical billing? Modifiers are used to provide additional detail, such as exceptional circumstances and anatomical location. Alphanumeric explain modifiers in medical coding, alphabetical, numerical, or both, without changing their fundamentals. Through the article, you can explore the list of modifiers and how multiple procedure modifiers work.
Purpose of the Modifier in Medical Billing
Modifiers are what you frequently encounter in medical billing for both inpatient and outpatient. Using modifiers strategically will facilitate accurate reimbursement for healthcare providers by pricing modifiers. Several modifiers explain how the given treatment is adapted to address a specific case. It confronts claim-creation challenges that positively affect the net collection rate. In short, it makes the treatment information descriptive, facilitating clear communication between providers and payers.
Benefits of the Modifier Codes
For an aspiring professional medical coder, it is necessary to use an advanced tool for coding modifier. It submits clean claims, enabling simplified payment, accurate reimbursement, and streamlining the process for complex cases that require detailed information. Let’s see the benefits of Medicare modifiers.
- Accurate coding
- Reduce payment delays
- Rectify information
- Accomplished payer guidelines
- Describes the aspects of services
- Transparent view and avoid fraud
- Improve documentation
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There are several types of modifiers in medical billing that are created and maintained by the American Medical Association and CMS.
Types of Medical Billing Modifiers
There are many types of medical billing modifiers, and they are separately categorized according to the coding system. Two of these, HCPCS and CPT modifiers, generally explain the services performed and the equipment used, but apart from these, we have a list of many other modifiers that we’ll discuss further in the blog. Let’s get a comprehensive insight into procedure code modifiers.
CPT Modifier
It is a two-character code that explains how, why, and limits the service is performed. 25, 26, and 59 are common CPT modifiers. 25 distinguished the EM services from other procedures, 26 rendered the physician, and 59 separated the bundle procedures.
HCPCS Modifiers
These modifiers are alphanumeric: one is an alphabet, and the other is a number. It has two levels. Level 1 HCPCS codes are used to submit medical claims for procedures performed by healthcare providers, hospitals, laboratories, and outpatient facilities.HCPCS level 2 modifiers are for claiming drugs, equipment, and services not represented in CPT. The HCPCS Modifier List has 5 characters that start with a letter followed by numbers. These letters are between A and V. J9355, C1823, and V2599 are procedure codes for the modifier.

Difference Between CPT and HCPCS Codes
CPT codes cover a considerable part of medical procedures; meanwhile, HCPCS are used when other equipment is required to support patient health. Let see the difference between CPT codes and HCPCS level II modifiers in medical terms.
NCCI Modifier
Medicaid and Medicare both accept these coding claims. It is used to inform the insurer that the provider performs more than one procedure for a patient and bills for 2 office visits on the same day. With a different provider, the modifier codes are 62-66.
Medical Billing for Multiple Procedure Modifiers
Each service or treatment requires separate medical billing. Multiple procedure modifier cover a situation when a patient undergoes several therapies at once. The situation can be one of these three,
- The same procedure was performed on different areas,
- Multiple therapies in the same session
- Last but not least, one treatment is performed numerous times.
Here is the list of modifiers for multiple procedures,
- 51: Multiple procedure
- 59 distinct procedural services
- 99 multiple modifiers, primarily used for complex cases
- 25 for evaluation and management services. Includes lab test, etc.
Generally, billing software is arranged in ascending order, with the surgery with the highest payment listed first, and so on. If this is not the case, confirm with your payers and set multiple payments accordingly. The billing modifiers are divided into two categories based on their purposes. One is pricing, and the other is the use of informational modifiers in medical billing.
Pricing Modifier in Medical Billing
The pricing modifier comes before the informational modifiers that work their name. These codes are used for pricing. Make sure to add pricing modifier codes at the right place to avoid processing issues.
Information Modifier in Medical Billing
It is a different modifier than pricing, but it still affects your claims. It holds all the information about the patients and the procedures they undergo. Not every insurance company needs to use the exact modifier, so check before entering pricing and informational modifiers on medical bills.
Common Modifiers in Medical Billing
There is a list of modifiers in medical billing that are commonly used. These modifiers are crucial for claims, which is why they are always a part of claim reimbursement to explain the detailed procedure.
Anaesthesia Modifiers
These procedure codes specify the details related to anaesthesia that has given to the patient. It carries all the necessary information, including which provider did that, dosage, and the patient’s condition that leads to anaesthesia. The anaesthesia modifiers are
| Modifiers | Roles they perform |
| AA | An anaesthesiologist personally performs. |
| AD | Under medical supervision |
| GC | These modifiers for HCPCS codes often pair with AA. |
| QK | Medical direction of more than two concurrent procedures |
| QS | For MAC |
| QX | AA service with the assistance of a physician. Specifically for non-physicians |
| QY | HCPCS modifier codes are used when anaesthesia is performed by a certified nurse anesthetist (CRNA) for a single case. |
| QZ | When anesthesia is performed independently without any senior supervision. |
Surgery Modifiers
Surgery modifiers are used for the documentation in the operative report to support the additional work and the reason for it. Here are surgery modifier examples.
| Modifiers | Procedures |
| 22 | Increased Procedural Services, which gives a reason for how the given procedure is essential and different from the regular treatments. |
| 24-25 | CPT modifiers show that a surgeon performs another procedure while the patient already had one. But relatively different. |
| 50 | Bilateral procedure, |
| 51 | Multiple procedures and laser included |
| 52 | An incomplete procedure modifier shows why the procedure is discontinued. |
| 55 | Patients’ follow-up care and recovery charges |
| Modifier XE | Report a service that is distinct due to a separate encounter |
| Modifier 76 and 77 | CPT codes and modifiers show repeated procedures for the same issue on the same day in the same session |
| Modifier -62 | Last but not least, it describes the surgery if it is performed by two or more surgeons. |
Anatomical Modifier
These modifiers are used for more specific procedure details. Anatomical modifiers are used with the lateral procedure code to avoid denials. Another thing to keep in mind while using these modifiers is that they should not be utilized with modifier 50. Here are anatomical modifiers,
| Body area | Codes |
| Sides | RT for right side, LT for left side, |
| Fingers and toes | FA left thumb, TA, T1-T9 for toes. |
| Coronary Arteries | LC for left circumflex, LD for left anterior, RC for right coronary |
| Eyelids | E1 and E3 for upper lids, E2 and E4 for lower lids. |
Get Accuracy in the Execution of the Modifiers with Star Billing Solutions
Star Billing Solutions provides end-to-end revenue management solutions to its partners. Modifiers in medical billing play a supporting role in billing that hold essential details of the medical procedure that the provider performed on the patient. Using them correctly gets you full payment from payers.