Is I27.81 a billable ICD-10-CM code?

Yes. I27.81 is a billable, specific ICD-10-CM code and is valid for submission on a claim.

Where does I27.81 sit in the tabular list?

Diseases of the circulatory system (I00-I99), in the block Pulmonary heart disease and diseases of pulmonary circulation (I26-I28).

What cannot be coded together with I27.81?

I27.81 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.

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.

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

These codes carry an Excludes1 note pointing at I27.81. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading I27.81 alone.

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.

Medicare coverage

I27.81 is named in 22 Medicare coverage policies — 22 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
A56423Billing and Coding: Cardiology Non-emergent Outpatient Stress Testing
A56476Billing and Coding: Cardiac Radionuclide Imaging
A56500Billing and Coding: Cardiac Catheterization and Coronary Angiography

How I27.81 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 I27.81.

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

Related codes at this level

Codes that share I27.8. If I27.81 is not quite right, the correct code is usually one of these.

Questions about I27.81

Is I27.81 a billable ICD-10-CM code?: Yes. I27.81 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does I27.81 sit in the tabular list?: Diseases of the circulatory system (I00-I99), in the block Pulmonary heart disease and diseases of pulmonary circulation (I26-I28).
What cannot be coded together with I27.81?: I27.81 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.