2025 ICD-10-CM Diagnosis Code I27.9 - Free 2025 ICD-10-CM/PCS Medical Coding

Pulmonary heart disease, unspecified

I27.9 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
The 2025 edition of ICD-10-CM I27.9 became effective on October 1, 2024.
This is the American ICD-10-CM version of I27.9 – other international versions of ICD-10 I27.9 may differ.

Applicable To

The following code(s) above I27.9 contain annotation back-references

that may be applicable to I27.9:

Approximate Synonyms

Clinical Information

Heart disease due to pulmonary hypertension secondary to disease of the lungs, or its blood vessels, with hypertrophy of the right ventricle.
Heart disease which occurs as a result of a primary pulmonary disease. Cor pulmonale most often manifests as right ventricular hypertrophy; it can also lead to right ventricular failure.
Hypertrophy and dilation of the right ventricle of the heart that is caused by pulmonary hypertension. This condition is often associated with pulmonary parenchymal or vascular diseases, such as chronic obstructive pulmonary disease and pulmonary embolism.

ICD-10-CM I27.9 is grouped within Diagnostic Related Group(s) (MS-DRG v42.0):

Convert I27.9 to ICD-9-CMCode History

2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
2017 (effective 10/1/2016): No change
2018 (effective 10/1/2017): No change
2019 (effective 10/1/2018): No change
2020 (effective 10/1/2019): No change
2021 (effective 10/1/2020): No change
2022 (effective 10/1/2021): No change
2023 (effective 10/1/2022): No change
2024 (effective 10/1/2023): No change
2025 (effective 10/1/2024): No change

Diagnosis Index entries containing back-references to I27.9: