Overcoming confusion about ‘conversion-to-open’ coding

Why This Topic Matters

Conversion-to-open cases are a common source of billing inconsistency because payer rules can differ. Understanding the high-level guidance helps coding staff avoid inappropriate reporting and improve documentation support for claims.

Article Sections

1. Medicare and modifier 22

   Explains Medicare’s general approach to procedures that begin one way and end another, along with the documentation emphasis discussed in the article. It also addresses when increased work may be relevant under Medicare policy.

2. CPT and private payers

   Summarizes the CPT/AMA perspective and notes that private payer policies may differ. The section focuses on the article’s comparison of reporting approaches across payers.

3. Diagnostic laparoscopy converted to open

   Discusses diagnostic laparoscopy situations, the distinction between diagnostic and non-diagnostic intent, and how the article frames related reporting considerations. It also addresses cases where two different procedures occur in the same session.