2014 ICD-9-CM Diagnosis Code 421.9
Acute endocarditis, unspecified
- 2014
- Billable Thru Sept 30/2015
- Non-Billable On/After Oct 1/2015
- Short description: Ac/subac endocardit NOS.
- ICD-9-CM 421.9 is a billable medical code that can be used to indicate a diagnosis on a reimbursement claim, however, 421.9 should only be used for claims with a date of service on or before September 30, 2015. For claims with a date of service on or after October 1, 2015, use an equivalent ICD-10-CM code (or codes).
- You are viewing the 2014 version of ICD-9-CM 421.9.
- More recent version(s) of ICD-9-CM 421.9: 2015.
Convert to ICD-10-CM:
421.9 converts directly to:
- 2015/16 ICD-10-CM I33.9 Acute and subacute endocarditis, unspecified
Approximate Synonyms
- Acute endocarditis
- Acute endocarditis (infection of heart valve)
- Acute nonbacterial endocarditis
- Endocarditis (infection of heart valve), subacute
- Endocarditis, acute
- Endocarditis, nonbacterial, acute
- Endocarditis, subacute
- Subacute endocarditis
- Subacute endocarditis (infection of heart valve)
421.9 Excludes
- acute rheumatic endocarditis (391.1
)
Applies To
- Endocarditis, acute or subacute
- Myoendocarditis, acute or subacute
- Periendocarditis, acute or subacute
ICD-9-CM Volume 2 Index entries containing back-references to
421.9:
- Endocarditis (chronic) (indeterminate) (interstitial) (marantic) (nonbacterial thrombotic) (residual) (sclerotic) (sclerous) (senile) (valvular) 424.90
acute or subacute 421.9
rheumatic (aortic) (mitral) (pulmonary) (tricuspid) 391.1
with chorea (acute) (rheumatic) (Sydenham's) 392.0
- aortic (heart) (nonrheumatic) (valve) 424.1
- with
- mitral (valve) disease 396.9
- active or acute 391.1
- with chorea (acute) (rheumatic) (Sydenham's) 392.0
- bacterial 421.0
- rheumatic fever (conditions classifiable to 390)
- active - see Endocarditis, acute, rheumatic
- inactive or quiescent (with chorea) 395.9
- with mitral disease 396.9
- acute or subacute 421.9
- arteriosclerotic 424.1
- congenital 746.89
- hypertensive 424.1
- rheumatic (chronic) (inactive) 395.9
- with mitral (valve) disease 396.9
- active or acute 391.1
- with chorea (acute) (rheumatic) (Sydenham's) 392.0
- active or acute 391.1
- with chorea (acute) (rheumatic) (Sydenham's) 392.0
- specified cause, except rheumatic 424.1
- syphilitic 093.22
- mitral (chronic) (double) (fibroid) (heart) (inactive) (valve) (with chorea) 394.9
- with
- aortic (valve) disease 396.9
- active or acute 391.1
- with chorea (acute) (rheumatic) (Sydenham's) 392.0
- rheumatic fever (conditions classifiable to 390)
- active - see Endocarditis, acute, rheumatic
- inactive or quiescent (with chorea) 394.9
- with aortic valve disease 396.9
- active or acute 391.1
- with chorea (acute) (rheumatic) (Sydenham's) 392.0
- bacterial 421.0
- arteriosclerotic 424.0
- congenital 746.89
- hypertensive 424.0
- nonrheumatic 424.0
- syphilitic 093.21
- pulmonary (chronic) (heart) (valve) 424.3
- with
- rheumatic fever (conditions classifiable to 390)
- active - see Endocarditis, acute, rheumatic
- inactive or quiescent (with chorea) 397.1
- acute or subacute 421.9
- rheumatic 391.1
- with chorea (acute) (rheumatic) (Sydenham's) 392.0
- arteriosclerotic or due to arteriosclerosis 424.3
- congenital 746.09
- hypertensive or due to hypertension (benign) 424.3
- rheumatic (chronic) (inactive) (with chorea) 397.1
- active or acute 391.1
- with chorea (acute) (rheumatic) (Sydenham's) 392.0
- syphilitic 093.24
- toxic (see also Endocarditis, acute) 421.9
- tricuspid (chronic) (heart) (inactive) (rheumatic) (valve) (with chorea) 397.0
- with
- rheumatic fever (conditions classifiable to 390)
- active - see Endocarditis, acute, rheumatic
- inactive or quiescent (with chorea) 397.0
- active or acute 391.1
- with chorea (acute) (rheumatic) (Sydenham's) 392.0
- arteriosclerotic 424.2
- congenital 746.89
- hypertensive 424.2
- nonrheumatic 424.2
- specified cause, except rheumatic 424.2
- syphilitic 093.23
- Myoendocarditis - see also Endocarditis
- acute or subacute 421.9
- Periendocarditis (see also Endocarditis) 424.90
- acute or subacute 421.9
