397.9 RHEUM ENDOCARDITIS NOS


Code Information

Diagnosis Code: 397.9

Short Description: Rheum endocarditis NOS

Long Description: Rheumatic diseases of endocardium, valve unspecified

Code Classification:

  • Diseases of the circulatory system (390–459)
    • Chronic rheumatic heart disease (393-398)
      • 397 Diseases of other endocardial structures
        • 397.9 Rheum endocarditis NOS

Code Version: 2015 ICD-9-CM


References to Index of Diseases and Injuries

The code 397.9 has the following ICD-9-CM references to the Index of Diseases and Injuries
  • Endocarditis (chronic) (indeterminate) (interstitial) (marantic) (nonbacterial thrombotic) (residual) (sclerotic) (sclerous) (senile) (valvular) 424.90
    • with
      • rheumatic fever (conditions classifiable to 390)
        • inactive or quiescent (with chorea) 397.9
    • rheumatic (chronic) (inactive) (with chorea) 397.9
      • active or acute (aortic) (mitral) (pulmonary) (tricuspid) 391.1
        • with chorea (acute) (rheumatic) (Sydenham's) 392.0
  • Fever 780.60
    • rheumatic (active) (acute) (chronic) (subacute) 390
      • inactive or quiescent with
        • endocarditis 397.9
          • aortic (valve) 395.9
            • with mitral (valve) disease 396.9
          • mitral (valve) 394.9
            • with aortic (valve) disease 396.9
          • pulmonary (valve) 397.1
          • tricuspid (valve) 397.0
  • Valvulitis (chronic) (see also Endocarditis) 424.90
    • rheumatic (chronic) (inactive) (with chorea) 397.9
      • active or acute (aortic) (mitral) (pulmonary) (tricuspid) 391.1

Crosswalk Information

The code 397.9 converts into the following ICD-10 code(s):
ICD-9 Code ICD-10 Code ICD-10 Description
397.9 Right Arrow I09.1 Rheumatic diseases of endocardium, valve unspecified
This ICD-9 to ICD-10 data is based on the 2018 General Equivalency Mapping (GEM) files published by the Centers for Medicare & Medicaid Services (CMS) for informational purposes only. The data is not an ICD-10 conversion tool and doesn’t guarantee clinical accuracy.

Similar Codes

ICD-9 Code ICD-9 Description
397.0 Diseases of tricuspid valve
397.1 Rheumatic diseases of pulmonary valve


This page was last updated on: 10/1/2014