ICD-10 code for multiple valves endocarditis

The ICD-10-CM code for multiple valves endocarditis is I08.9 (Rheumatic multiple valve disease, unspecified). The official index lists 1 more specific code, so check the documentation for details such as type, cause, site or severity before settling on I08.9.

Within I08, choose I08.9 (Rheumatic multiple valve disease, unspecified) only when documentation doesn't support a more specific option: rheumatic disorders of both mitral and aortic valves (I08.0), rheumatic disorders of both mitral and tricuspid valves (I08.1), rheumatic disorders of both aortic and tricuspid valves (I08.2), combined rheumatic disorders of mitral, aortic and tricuspid valves (I08.3) and other rheumatic multiple valve diseases (I08.8).

It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.

In MS-DRG v44.0, it is part of the grouping logic for DRG 306 (Cardiac Congenital and Valvular Disorders with MCC, relative weight 1.546) and DRG 307 (Cardiac Congenital and Valvular Disorders without MCC, relative weight 0.9148), in MDC 05 (Diseases and Disorders of the Circulatory System), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.