Hint: If the modifier indicator is “0,” you can never break the PTP edit. When you submit claims in your cardiology practice, it’s imperative to check the National Correct Coding Initiative (CCI) edits and know which codes you can report in conjunction with each other. Recently in the webinar “The National Correct Coding Initiative and Medically Unlikely Edits,” Arlene Dunphy, provider outreach and education consultant at the Medicare administrative contractor (MAC) National Government Services (NGS), reviewed how the procedure-to-procedure (PTP) CCI edits work and why they are important to coders. Editor’s note: There are two types of PTP edits, those for physicians and those for hospitals. We will be talking only about the PTP edits that impact physicians. Read on to get back to the basics with PTP CCI edits in your cardiology practice. First, Understand CCI PTP Edits PTP pair edits are just one type of CCI edits. There are also medically unlikely edits (MUEs) and add-on codes. “PTP edits were developed to promote national correct coding methods, to control improper coding leading to inappropriate payments for Medicare claims, and to prevent unbundling of services,” according to Dunphy. PTP edits are updated quarterly. CCI’s coding policies are based on the CPT® manual, the HCPCS manual, national and local Medicare policies, and coding guidelines that national societies developed. Where to find: You can find the latest CCI edits at https://www. cms.gov/Medicare/Coding/NationalCorrectCodInitEdCMS.gov. The most recent edits were effective on April 1, 2021. See How PTP Edits Work When your provider submits two codes, the Column 1 is eligible for payment, but Medicare will deny the Column 2 code unless both codes are clinically appropriate, according to Dunphy. Also, your provider must include the supporting documentation in the medical record. CCI does not include all possible code combinations, so providers are obligated to code correctly, even if edits do not exist, Dunphy said. Services that are denied based on PTP code pair edits may not be billed to Medicare beneficiaries, and you cannot utilize an advance beneficiary notice (ABN) to seek payment. Modifier indicators: Each PTP edit pair has a particular modifier indicator. This indicator can be “0,” “1,” or “9.” Take a look at what these indicators mean: Example: A PTP edit exists between codes 93015 (Cardiovascular stress test using maximal or submaximal treadmill or bicycle exercise, continuous electrocardiographic monitoring, and/or pharmacological stress; with supervision, interpretation and report) and 93005 (Electrocardiogram, routine ECG with at least 12 leads; tracing only, without interpretation and report). Code 93005 is a Column 2 code for 93015. However, since the modifier indicator for this PTP pair is “1,” you may use a CCI-associated modifier to override this edit under the appropriate circumstances. Bottom line: So, when it comes to PTP edit pairs, the Column 1 code is payable, and the Column 2 is a component code that is only payable if certain criteria are met, according to Dunphy. Append CCI-Associated Modifiers Appropriately Modifier 59 (Distinct procedural service) is probably the most well-know modifier when it comes to PTP edits. However, modifier 59 is also a widely abused modifier that some use just to bypass an edit, so make sure you use append this modifier appropriately, Dunphy said. Also, documentation is key when you are using modifiers. The supporting documentation must satisfy the criteria required. “Only use this modifier if it [modifier 59] best describes the circumstances,” Dunphy adds. You should never just use modifier 59 as a default modifier. X{EPSU}modifiers: Modifiers XE (Separate encounter…), XS (Separate structure…), XP (Separate practitioner…), and XU (Unusual non-overlapping service…) are a subset of modifier 59, but they have not replaced modifier 59. You should never report modifiers X{EPSU} together with modifier 59 on your claim, Dunphy said. You should just report one modifier or the other. Here are some tips from Dunphy about appropriate use for modifiers 59 and X{EPSU}: On the other hand, you should never use modifiers 59 or X{EPSU}under the following circumstances: