Convert ICD-9-CM Diagnosis 311 to ICD-10-CM

ICD-9-CM 311 converts approximately to:
  • 2021 ICD-10-CM F32.9 Major depressive disorder, single episode, 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.