Acute and subacute endocarditis, unspecified
Billable / specific
I33.9 is a billable, specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes in FY2027.
Inclusion terms
Applicable to
- Acute endocarditis NOS
- Acute myoendocarditis NOS
- Acute periendocarditis NOS
- Subacute endocarditis NOS
- Subacute myoendocarditis NOS
- Subacute periendocarditis NOS
Excludes1
Not coded here — never report together with this code.
Excludes2
Not included here — may be reported together when both conditions exist.
- certain conditions originating in the perinatal period (P04-P96) (from I33)
- certain infectious and parasitic diseases (A00-B99) (from I33)
- complications of pregnancy, childbirth and the puerperium (O00-O9A) (from I33)
- congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99) (from I33)
- endocrine, nutritional and metabolic diseases (E00-E88) (from I33)
- injury, poisoning and certain other consequences of external causes (S00-T88) (from I33)
- neoplasms (C00-D49) (from I33)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94) (from I33)
- systemic connective tissue disorders (M30-M36) (from I33)
- transient cerebral ischemic attacks and related syndromes (G45.-) (from I33)
Also known as
- Acute endocarditis NOS
- Acute myoendocarditis NOS
- Acute periendocarditis NOS
- Subacute endocarditis NOS
- Subacute myoendocarditis NOS
- Subacute periendocarditis NOS
- Endocarditis, acute or subacute
- Endocarditis, aortic, acute or subacute
- Endocarditis, mitral, nonrheumatic, acute or subacute
- Endocarditis, pulmonary, acute or subacute
- Endocarditis, toxic
- Endocarditis, tricuspid, nonrheumatic, acute or subacute
Parent code
- I33Acute and subacute endocarditisHeader
Related codes
- I33.0Acute and subacute infective endocarditisBillable