MCMedicalCodingSoftware
I38

I38: Endocarditis, valve unspecified

Billable / specific codeICD-10-CM

I38 is a billable, specific ICD-10-CM code for endocarditis, valve unspecified. It is valid for submission on a claim.

Check I38 with the rest of the claim: free scrubber

Excludes1: never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

  • congenital insufficiency of cardiac valve NOS (Q24.8)
  • congenital stenosis of cardiac valve NOS (Q24.8)
  • endocardial fibroelastosis (I42.4)
  • endocarditis specified as rheumatic (I09.1)

Includes

Conditions this code covers.

  • endocarditis (chronic) NOS
  • valvular incompetence NOS
  • valvular insufficiency NOS
  • valvular regurgitation NOS
  • valvular stenosis NOS
  • valvulitis (chronic) NOS

Other codes that can never be billed with I38

Their own Excludes1 notes name this code, so the conflict is not listed above.

  • I08Multiple valve diseases
  • I09.1Rheumatic diseases of endocardium, valve unspecified
  • I33Acute and subacute endocarditis

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Medicare coverage

I38 is named in 12 Medicare coverage policies: 12 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.

  • A52850Billing and Coding: Cardiac Catheterization and Coronary Angiography
  • A52868Billing and Coding: Transesophageal Echocardiography (TEE)
  • A56476Billing and Coding: Cardiac Radionuclide Imaging
  • A56500Billing and Coding: Cardiac Catheterization and Coronary Angiography

Alphabetic index entries that lead here

  • Endocarditis(chronic) (marantic) (nonbacterial) (thrombotic) (valvular)
  • Disease, diseased›valve, valvular
  • Endocarditis›arteriosclerotic
  • Insufficiency, insufficient›valve, valvular(heart)
  • Stenosis, stenotic›heart valve
  • Stenosis, stenotic›valve(cardiac) (heart)
  • Hypertrophy, hypertrophic›heart›valve
  • Stricture›heart›valve

Code history

Unchanged in every release from FY2024 to FY2027.

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.