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I27.81

I27.81: Cor pulmonale (chronic)

Billable / specific codeICD-10-CM

I27.81 is a billable, specific ICD-10-CM code for cor pulmonale (chronic). It is valid for submission on a claim.

Check I27.81 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.

  • acute cor pulmonale (I26.0-)

Code also

Both codes may be needed to describe the encounter fully. Sequencing depends on the reason for the visit.

  • , if applicable, right heart failure (I50.81-)

Inclusion terms

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

  • Cor pulmonale NOS

Other codes that can never be billed with I27.81

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

  • I26Pulmonary embolism

Risk adjustment

I27.81 risk-adjusts. Under the CMS-HCC V28 model it maps to this category:

  • HCC 226 Heart Failure, Except End Stage and Acute0.360 RAF

Coefficient shown for the Community Non-dual Aged segment. A higher HCC in the same hierarchy will suppress this one, so capturing it does not always add score. Look up the whole chart to see which of its HCCs the hierarchy would zero.

Medicare coverage

I27.81 is named in 18 Medicare coverage policies: 18 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.

  • A52850Billing and Coding: Cardiac Catheterization and Coronary Angiography
  • A56423Billing and Coding: Cardiology Non-emergent Outpatient Stress Testing
  • A56476Billing and Coding: Cardiac Radionuclide Imaging
  • A56500Billing and Coding: Cardiac Catheterization and Coronary Angiography

Alphabetic index entries that lead here

  • Cor›pulmonale
  • Pancake heart›with cor pulmonale(chronic)
  • Cor›pulmonale›chronic
  • Cor›pulmonale›acute›without pulmonary embolism

Code history

Unchanged in every release from FY2024 to FY2027.

Other codes under I27.8

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.