Acute and subacute endocarditis I33

The ICD10 code for the diagnosis "Acute and subacute endocarditis" is "I33". I33 is NOT a 'valid' or 'billable' ICD10 code. Please select a more specific diagnosis below.

  • I33 should not be used for reimbursement purposes. Please select a more specific diagnosis below.
  • The 2019 edition of ICD-10-CM I33 became effective on October 1, 2018.
  • This is the American ICD-10-CM version of I33 - other international versions of ICD-10 I33 may differ.
Type 1 Excludes:
  • acute rheumatic endocarditis (I01.1)
  • endocarditis NOS (I38)

Codes: = Billable

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.