Convert ICD-10-CM A18.4 to ICD-9-CM

ICD-10-CM A18.4 converts approximately to:
  • 2015 ICD-9-CM 017.00 Tuberculosis of skin and subcutaneous cellular tissue, unspecified
    or:
  • 2015 ICD-9-CM 017.10 Erythema nodosum with hypersensitivity reaction in tuberculosis, unspecified

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: 2021 ICD-10-CM CMS General Equivalence Mappings.