MCMedicalCodingSoftware
I31.0

I31.0: Chronic adhesive pericarditis

Billable / specific codeICD-10-CM

I31.0 is a billable, specific ICD-10-CM code for chronic adhesive pericarditis. It is valid for submission on a claim.

Check I31.0 with the rest of the claim: free scrubber

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

  • Accretio cordis
  • Adherent pericardium
  • Adhesive mediastinopericarditis

Excludes1 inherited from the categories above I31.0

A category’s note binds every code beneath it.

Written on I31: Other diseases of pericardium

  • diseases of pericardium specified as rheumatic (I09.2)
  • postcardiotomy syndrome (I97.0)
  • traumatic injury to pericardium (S26.-)

Other codes that can never be billed with I31.0

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

  • I09.2Chronic rheumatic pericarditis

Risk adjustment

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

Medicare coverage

I31.0 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
  • A56451Billing and Coding: Cardiac Computed Tomography (CCT) and Coronary Computed Tomography Angiography (CCTA)
  • A56500Billing and Coding: Cardiac Catheterization and Coronary Angiography
  • A56505Billing and Coding: Transesophageal Echocardiography (TEE)

Alphabetic index entries that lead here

  • Accretio cordis(nonrheumatic)
  • Cardiosymphysis
  • Adherent›pericardium(nonrheumatic)
  • Adhesions, adhesive›cardiac
  • Adhesions, adhesive›heart
  • Adhesions, adhesive›pericardium(nonrheumatic)
  • Fibrosis, fibrotic›pericardium
  • Mediastinopericarditis›adhesive
  • Milk›spots
  • Pericarditis›adhesive or adherent(chronic) (external) (internal)
  • Pericarditis›fibrous
  • Pericarditis›obliterans, obliterating

Code history

Unchanged in every release from FY2024 to FY2027.

Other codes under I31

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.