Is it possible to construct a procedure code solely from the alphabetic index?

To determine how procedure codes are constructed in ICD-10-PCS, it’s important to understand the role of the alphabetic index versus the tables. The alphabetic index serves as a guide to locate specific terms and categories, making it a useful tool in the coding process. However, constructing a complete and accurate procedure code requires the use of the tabular list, where the detailed descriptions, valid combinations, and specific coding conventions are clearly outlined.

The tabular list provides essential information, including the correct characters in the code structure, additional specified details necessary for certain procedures, and guidance on how to handle specific coding scenarios. Relying solely on the alphabetic index could result in incomplete or incorrect coding since it would lack the specificity needed to adhere to the official coding guidelines.

Therefore, the only correct method to construct a procedure code in ICD-10-PCS involves consulting the tabular list, confirming all details align with the guidelines and including full descriptions.