ABA Code Conversion Table

Unsure about codes that payers are using for ABA services? This chart outlines the essential elements of ABA assessment and treatment services and the HCPCS and CPT® codes that have been used for reporting and billing those services. In particular, it shows the conversion of the Category III (temporary) CPT® codes that were issued in 2014 to the Category I and modified Category III codes that took effect on January 1, 2019. The accompanying letter provides additional important information about the 2019 code set.

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For the Table