Knowledge Base Article

In today’s busy world, calendars and notes help us keep track of all our appointments and to-do’s. But sometimes, I have too many calendars – a hand-written calendar on my refrigerator so I see it daily, an Outlook calendar at work and a calendar on my smart phone. I have to remember to synchronize my various calendars so I am not relying on an incomplete listing. This is a problem of information in too many places – similar to issues that sometimes occur with Medicare’s National Correct Coding Initiative (NCCI or CCI). Is the information in an edit table, the policy manual, or both?

If you are involved in healthcare coding, billing or compliance you best be aware of Medicare’s CCI edits. According to the NCCI webpage, “The CMS developed the National Correct Coding Initiative (NCCI) to promote national correct coding methodologies and to control improper coding leading to inappropriate payment in Part B claims. The CMS developed its coding policies based on coding conventions defined in the American Medical Association's CPT Manual, national and local policies and edits, coding guidelines developed by national societies, analysis of standard medical and surgical practices, and a review of current coding practices.” The NCCI information also applies to Medicaid claims and some other government and commercial insurances also follow some or all of these “correct coding” principles.

There are multiple parts to CMS’s National Correct Coding Initiative – three different types of edits and a policy manual.

Procedure-to-procedure (PTP) Edits

Originally labeled as “comprehensive/component” and “mutually exclusive” code pairs, these have been consolidated into the Column One/Column Two Correct Coding edit file. PTP edits prevent inappropriate payment of services that should not be reported together. There is a PTP file for practitioners and another for hospitals.

Each edit has a column one and column two HCPCS/CPT code. If a provider reports the two codes of an edit pair for the same beneficiary on the same date of service, the column one code is eligible for payment but the column two code is denied unless a clinically appropriate NCCI-associated modifier is also reported.

Medically Unlikely Edits (MUEs)

CMS developed Medically Unlikely Edits (MUEs) to reduce the paid claims error rate for Part B claims. An MUE for a HCPCS/CPT code is the maximum units of service that a provider would report under most circumstances for a single beneficiary on a single date of service. All HCPCS/CPT codes do not have an MUE. Although CMS publishes most MUE values on its website, other MUE values are confidential and are for CMS and CMS Contractors' use only. The latter group of MUE values should not be released since CMS does not publish them. There are MUE files for practitioners, facilities, and DME.

A few years ago, CMS added MUE Adjudication Indicators (MAIs) to the MUE table to indicate whether an MUE was a line item edit (MAI of 1), an absolute date of service edit (MAI of 2), or an appealable date of service edit (MAI of 3).

Add-On Code Edits

Add-on code edits consist of a listing of HCPCS and CPT add-on codes with their respective primary codes. An add-on code is eligible for payment if and only if one of its primary codes is also eligible for payment. See CR7501 for more information.

National Correct Coding Initiative Policy Manual for Medicare Services

The Policy Manual is a reference tool for correct coding and explains the rationale for NCCI edits. Chapter 1 addresses general coding principles, issues, and policies. Subsequent chapters correspond respectively to each CPT Manual section, Level 2 HCPCS codes and Category III CPT codes. These chapters further address the principles, issues, and policies dealing with specific groups of HCPCS/CPT codes.

Providers should carefully review the chapters of the manual that pertain to the code ranges they most often bill. These chapters include detailed information about correct coding and use of NCCI-associated modifiers for separately reportable services, and much more.

Source: MLN Product - How To Use the NCCI Tools

Providers must utilize all of the above tables and manual to ensure they are billing and coding correctly. Sometimes information is in a table or the manual but not in both. For example, there are no CCI edits between a thoracentesis (CPT codes 32554 / 32555) and a chest x-ray. But, in the Radiology chapter of the CCI policy, they include CPT codes 32554 and 32555 as examples of procedures where a chest x-ray should “not” be reported separately in the scenario described below as “usually performed”.

2016 CCI Policy Manual / chapter 9 / page 6: “When a central venous catheter is inserted, a chest radiologic examination is usually performed to confirm the position of the catheter and absence of pneumothorax. Similarly when an emergency endotracheal intubation procedure (CPT code 31500), chest tube insertion procedure (e.g., CPT codes 32550, 32551, 32554, 32555), or insertion of a central flow directed catheter procedure (e.g., Swan Ganz)(CPT code 93503) is performed, a chest radiologic examination is usually performed to confirm the location and proper positioning of the tube or catheter. The chest radiologic examination is integral to the procedures, and a chest radiologic examination (e.g., CPT codes 71010, 71020) should not be reported separately.”

Providers may want to create an internal billing edit to identify claims with CPT codes 32554 / 32555 billed on the same date of service as a chest x-ray in order to comply with the CCI Policy Manual guidance.

So remember to check all your calendars to keep yourself on schedule and check all the NCCI resources to keep your billing and coding on point.