Convert ICD-9-CM Diagnosis 556.3 to ICD-10-CM

ICD-9-CM 556.3 converts approximately to:
  • 2022 ICD-10-CM K51.30 Ulcerative (chronic) rectosigmoiditis without complications

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: 2022 ICD-10-CM CMS General Equivalence Mappings.