MCMCB Pro
I30.1

I30.1Infective pericarditis

Billable / specific codeICD-10-CM

I30.1 is a billable, specific ICD-10-CM code for infective pericarditis. It is valid for submission on a claim.

Use additional code

Add a secondary code to capture the detail described below.

  • code (B95-B97) to identify infectious agent

Inclusion terms

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

  • Pneumococcal pericarditis
  • Pneumopyopericardium
  • Purulent pericarditis
  • Pyopericarditis
  • Pyopericardium
  • Pyopneumopericardium
  • Staphylococcal pericarditis
  • Streptococcal pericarditis
  • Suppurative pericarditis
  • Viral pericarditis

Risk adjustment

I30.1 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.

Medicare coverage

I30.1 is named in 18 Medicare coverage policies 18 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.

  • A52850Billing and Coding: Cardiac Catheterization and Coronary Angiography
  • A55354Billing and Coding: Frequency of Hemodialysis
  • A55672Billing and Coding: Frequency of Hemodialysis
  • A55675Billing and Coding: Frequency of Hemodialysis

How I30.1 is indexed

Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to I30.1.

  • Pneumopyopericardium
  • Pyopericarditis, pyopericardium
  • Pyopneumopericardium
  • Abscesspericardial
  • Pericarditisbacterial(acute) (subacute) (with serous or seropurulent effusion)
  • Pericarditisfibrinopurulent
  • Pericarditisinfective
  • Pericarditispneumococcal
  • Pericarditispurulent
  • Pericarditisseptic
  • Pericarditisstaphylococcal
  • Pericarditisstreptococcal

Related codes at this level

Codes that share I30. If I30.1 is not quite right, the correct code is usually one of these.

Questions about I30.1

Is I30.1 a billable ICD-10-CM code?
Yes. I30.1 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does I30.1 sit in the tabular list?
Diseases of the circulatory system (I00-I99), in the block Other forms of heart disease (I30-I5A).
ICD-10-CMFY2026-Apr· effective April 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.