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Table 1 ICD-10 Endocarditis codes and corresponding ICD-9 codes (and clinical modifications)

From: ‘Caveat emptor’: the cautionary tale of endocarditis and the potential pitfalls of clinical coding data—an electronic health records study

ICD-10 Code

Description

Corresponding ICD-9 Code/ICD-9-CM code

Description

Included

 I33 (I330)

Acute and subacute infective endocarditis

4210

Acute and subacute infective endocarditis

 I38

Endocarditis, valve unspecified

4249

Endocarditis valve unspecified cause

 (I38.X)

42499

Other endocarditis valve unspecified

 I339

Acute and subacute endocarditis, unspecified

4219

Acute endocarditis unspecified

 T826

Infection and inflammatory reaction due to cardiac valve prosthesis

99661

Infection and inflammatory reaction due to cardiac device implant and graft

 B376

Candidal endocarditis

11281

Candidal endocarditis

 I39

Endocarditis and heart valve disorders in diseases classified elsewhere

11504

Histoplasma capsulatum endocarditis

 (I390)

 

Histoplasma duboisii endocarditis

11514

Histoplasmosis endocarditis

11594

Acute and subacute infective endocarditis in diseases classified elsewhere

4211

Endocarditis in diseases classified elsewhere

 I398

Endocarditis, valve unspecified, in diseases classified elsewhere

42491

 

Not included

 I423

Endomyocardial (eosinophilic) disease

4250

Endomyocardial fibrosis

 I091

Rheumatic diseases of the endocardium, valve unspecified

3979

Rheumatic diseases of the endocardium valve unspecified

 T827*

Infection and inflammatory reaction due to other cardiac and vascular device, implants and grafts

99661

Infection and inflammatory reaction due to cardiac device implant and graft

99662

Infection and inflammatory reaction due to vascular device implant and graft

 I011

Acute rheumatic endocarditis

3911

Acute rheumatic endocarditis

Codes that feature only US specialised coding guidance (ICD-10-CM 2010) [27], not in UK datasets

 A3951

Meningococcal endocarditis

3642

Meningococcal endocarditis

 A3282

Listerial endocarditis

42491

Endocarditis in diseases classified elsewhere

 A5203

Syphilitic endocarditis

42491

Endocarditis in diseases classified elsewhere

 B3321

Viral endocarditis

7422

Coxsackie endocarditis

 A5483

Gonococcal heart infection

9884

Gonococcal endocarditis

  1. *The T827 code (‘Infection and inflammatory reaction due to other cardiac and vascular device, implants and grafts’) was not selected as a review of the Oxford 2016 audit data suggested it was overwhelmingly used for wound infections after surgery, and the number of admissions with a primary or secondary T827 code was greater than all other endocarditis-coded admissions combined