Urology Coding Alert

NCCI:

Get Details on This Lesser Known Sequential Procedures Guideline

Enhance your skills by utilizing guidelines from all corners of the coding universe.

The National Correct Coding Initiative (NCCI) Policy Manual is one of the more underutilized and underappreciated resources available to the coding and billing community. You should make a habit of reading through the manual on a yearly basis and highlighting the respective policies that might apply to urology.

However, an even more obscure manual that’s full of useful coding tidbits and instruction is the NCCI Correspondence Language Manual for Medicare Services. In it, you will find “general correspondence language” pertaining to NCCI procedure-to-procedure (PTP) edits and medically unlikely edits (MUEs) for each respective code range. While every coder should be familiar with the entirety of the manual, in this article, we’ll home in on one specific section: sequential procedures.

Get a feel for the guidelines as we work our way through this real-world urological example to fully equip you to handle all sequential procedure coding situations.

Focus on End Result with Modifier Eligibility

Before diving into the specific guidelines on how to approach surgeries involving sequential procedures, have a look at the following surgical scenario to envision how the coding dynamics might play out.

Example: The physician unsuccessfully attempts a laparoscopic nephrectomy with a partial ureterectomy. Following the unsuccessful attempt, the physician performs a successful nephrectomy using an open approach that includes rib resection.

The procedure codes in consideration are as follows:

  • 50220 (Nephrectomy, including partial ureterectomy, any open approach including rib resection)
  • 50546 (Laparoscopy, surgical; nephrectomy, including partial ureterectomy)

Without an extensive knowledge of the NCCI Policy Manual, you may find yourself incorrectly coding this scenario. If you perform an NCCI edits check on these two procedures, you will see that the NCCI edit details a modifier “1” indicator, meaning that you may report code 50546 (the column 2 code) alongside 50220 with an overriding modifier. However, context is crucial in determining whether or not the column 2 code is separately billable.

This is where you’ll want to consider Medicare’s policy on sequential procedures as stated in the NCCI Correspondence Manual:

“If a provider attempts several procedures in direct succession at a patient encounter to accomplish the same end, only the procedure that successfully accomplishes the expected result is reported. Generally, this occurs when a less extensive procedure fails and requires the performance of a more extensive procedure. A failed procedure followed by a more extensive procedure should not be reported separately. Procedures that are often performed in sequence have been identified and the less extensive procedure is not separately reportable with the more extensive procedure.”

The key phrase you should focus in on here is “to accomplish the same end.” In the example scenario, the physician clearly performs both consecutive procedures for the same diagnostic reasons, so the sequential procedure policy applies to this situation. However, some coders and physicians may argue that, due to the time and effort put into the first procedure, you should report both codes with modifiers 53 (Discontinued procedure) and 59 (Distinct procedural service) attached to 50546.

While the use of modifier 53 seems to make sense based on the circumstances, the NCCI rules on sequential procedures do not allow these two procedures to be reported together, no matter the extent of the physician’s work on the initial laparoscopic procedure. Therefore, you should code this example with 50220 alone.

Caveat: While reporting each distinct CPT® code is not allowable, you may append modifier 22 (Increased procedural services) to 50220 if the operative report sufficiently details the extent of extra work performed prior to the open procedure.

Final note: Make sure to add ICD-10-CM code Z53.31 (laparoscopic surgical procedure converted to open procedure) as a secondary diagnosis on your claim to indicate the change to an open procedure.