Instructor’s Guide for ICD-9-CM Diagnostic Coding and ...

The Procedure Code/MS-DRG Index is a reference source of all ICD-9-CM procedure codes that affect MS-DRG assignment, the MDCs and MS-DRGs to which they are assigned, and a description of the surgical categories. ... 0401 Excision acoustc neuroma 01 023-027. 03 133-134. 0402 Trigeminal nerv division 01 040-042. 03 133-134. 21 907-909. ................
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