Acute and subacute endocarditis, unspecified I33.9

The ICD10 code for the diagnosis "Acute and subacute endocarditis, unspecified" is "I33.9". I33.9 is a VALID/BILLABLE ICD10 code, i.e it is valid for submission for HIPAA-covered transactions.

  • I33.9 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2019 edition of ICD-10-CM I33.9 became effective on October 1, 2018.
  • This is the American ICD-10-CM version of I33.9 - other international versions of ICD-10 I33.9 may differ.
Applicable To:
  • Acute endocarditis NOS
  • Acute myoendocarditis NOS
  • Acute periendocarditis NOS
  • Subacute endocarditis NOS
  • Subacute myoendocarditis NOS
  • Subacute periendocarditis NOS

Codes: = Billable

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