ICD-9 E codes are external cause of injury codes and in ICD-9 claims processing system these codes can not be used as Primary Codes. If submitted as E codes then this has to be denied. Therefor corresponding X-walk of all this ICD-9 E codes to ICD-10 codes has to be testing as a part of ICD-10 testing.
There are so many ICD-9 E codes and here are first 20 of the X-walk based on Gems tool.
| ICD-9 Codes | ICD-10 Codes |
| E0000 | Y990 |
| E0001 | Y991 |
| E0002 | Y992 |
| E0008 | Y998 |
| E0009 | Y999 |
| E0010 | Y9301 |
| E0011 | Y9302 |
| E0020 | Y9311 |
| E0021 | Y9312 |
| E0022 | Y9313 |
| E0023 | Y9314 |
| E0024 | Y9315 |
| E0025 | Y9316 |
| E0026 | Y9317 |
| E0027 | Y9318 |
| E0028 | Y9319 |
| E0029 | Y9319 |
| E0030 | Y9321 |
| E0031 | Y9322 |
| E0032 | Y9323 |
Test your ICD-10 system to ensure that all ICD-10 external cause of entry claims denied when used as Primary Diagnosis codes.
There are also significant number of E-codes that are no longer valid in ICD-10 world( orphan codes), see my previous post for such codes and its impact.
There are also significant number of E-codes that are no longer valid in ICD-10 world( orphan codes), see my previous post for such codes and its impact.
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