tci Part B Insider - 2003 Issue 11

Coding: Can't Decide Between -51 and -59? Here's How to Choose

Physicians, coders and payers alike often have trouble distinguishing between modifiers -59 (Distinct procedural service) and -51 (Multiple procedures) because they have similar applications. But a quick review of coding guidelines - and as a last resort, a well-placed call to the insurer - can help you choose between the modifiers with confidence. Use -59 to 'Unbundle'  CPT specifies that you should use modifier -59 to indicate a procedure or service that is "distinct or independent from other services performed on the same day" and, further, that the two services/procedures are "not normally reported together, but are appropriate...

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