Convert ICD-10-CM I73.01 to ICD-9-CM

I73.01 can be converted to ICD-9-CM using the following scenario:
Scenario 1

Note: approximate conversions between ICD-9-CM codes and ICD-10-CM codes may require clinical interpretation in order to determine the most appropriate conversion code(s) for your specific coding situation.

Source: 2018 ICD-10-CM CMS General Equivalence Mappings.