Map-Assisted Generation of Procedure and Intervention Encoding (Magpie): An Innovative Approach for ICD-10-PCS Coding.

ICD-10-PCS coding is challenging because of the large number of codes, non-intuitive terms and paucity of the ICD-10-PCS index. We previously repurposed the richer ICD-9-CM procedure index for ICD-10-PCS coding. We have developed the MAGPIE tool based on the repurposed ICD-9-CM index with other lexical and mapping resources.

Re-purposing the ICD-9-CM Procedures Index for Coding in ICD-10-PCS and SNOMED CT.

Compared to the ICD-10-PCS index, the ICD-9-CM Procedure (ICD9V3) Index is richer and contains more clinician-friendly terms including abbreviations and eponyms. We re-purposed the ICD9V3 index by mapping the index terms to SNOMED CT and the ICD-9-CM codes to ICD-10-PCS codes through the General Equivalent Mappings. The re-purposed index outperformed the ICD-10-PCS index in the retrieval of ICD-10-PCS codes using a list of commonly used procedure names, with significantly higher recall, precision and F-score.