I39

ICD-10Billable

Endocarditis and heart valve disord in dis classd elswhr

Official ICD-10-CM descriptor (FY2026)

Endocarditis and heart valve disorders in diseases classified elsewhere

I39 is valid for submission on a claim — CMS flags it as a billable, specific code.

Excludes1

Not coded here. An Excludes1 code should never be reported at the same time as the code above it.

  • endocardial involvement in:
  • candidiasis (B37.6)
  • gonococcal infection (A54.83)
  • Libman-Sacks disease (M32.11)
  • listerosis (A32.82)
  • meningococcal infection (A39.51)
  • rheumatoid arthritis (M05.31)
  • syphilis (A52.03)
  • tuberculosis (A18.84)
  • typhoid fever (A01.02)

Code first

Sequence the underlying condition before this code.

  • underlying disease, such as:
  • Q fever (A78)

Where this code sits

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Source

ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.

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