Convert ICD-9-CM Diagnosis 033.0 to ICD-10-CM

ICD-9-CM 033.0 converts approximately to:
  • 2023 ICD-10-CM A37.00 Whooping cough due to Bordetella pertussis without pneumonia

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: 2023 ICD-10-CM CMS General Equivalence Mappings.