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In the realm of medical coding, precise and standardized terminology is crucial for accurate record-keeping and effective healthcare management. One such terminology system is the International Classification of Diseases, 10th Edition (ICD-10). In this article, we delve into the ICD-10 code for Pulmonary Hypertension, also known as CTEPH, explore the ICD-10 code for I27, examine the ICD-10 code for hypertension, and provide insights into the related Current Procedural Terminology (CPT) codes for Pulmonary Hypertension.

ICD-10 Code for Pulmonary Hypertension CTEPH

Pulmonary Hypertension, specifically Chronic Thromboembolic Pulmonary Hypertension (CTEPH), is a condition characterized by elevated blood pressure in the pulmonary arteries due to chronic blood clots. In the ICD-10 coding system, CTEPH is classified under multiple codes to ensure accurate documentation and billing. The primary ICD-10 code for CTEPH is I27.2. This code accounts for CTEPH without acute cor pulmonale, providing a specific reference for this condition.

It’s essential for medical professionals, coders, and billers to use this precise ICD-10 code when dealing with cases of CTEPH to ensure accurate record-keeping and reimbursement claims.

ICD-10 Code for I27

The ICD-10 code for Pulmonary Hypertension, as we mentioned earlier, is I27. However, this code encompasses various subcodes, each indicating different aspects and stages of Pulmonary Hypertension. To ensure comprehensive coding, healthcare providers use the following ICD-10 subcodes:

These subcodes allow for a more detailed and accurate description of the specific condition being treated, ensuring that healthcare professionals can pinpoint the exact nature of Pulmonary Hypertension in a patient’s medical record.

ICD-10 Code for Hypertension

While discussing Pulmonary Hypertension, it’s important to differentiate it from general hypertension, which pertains to high blood pressure throughout the body. In the ICD-10 system, the code for essential (primary) hypertension is I10. This code is used to document cases of high blood pressure unrelated to any other underlying condition. When documenting hypertension, healthcare providers should use this code for accurate coding and billing purposes.

CPT Codes for Pulmonary Hypertension

In addition to ICD-10 codes, healthcare professionals and coders rely on Current Procedural Terminology (CPT) codes to describe medical services and procedures related to Pulmonary Hypertension. These codes ensure that healthcare providers are properly reimbursed for their services. The specific CPT codes related to Pulmonary Hypertension may include, but are not limited to:

These CPT codes correspond to various diagnostic and interventional procedures associated with Pulmonary Hypertension, allowing for precise billing and record-keeping.


In the world of healthcare and medical coding, accuracy and precision are paramount. The ICD-10 codes for Pulmonary Hypertension, including CTEPH, and hypertension, along with the relevant CPT codes, ensure that healthcare professionals can document and bill for their services correctly. By using the appropriate codes, they can provide optimal care for patients and manage their medical practices efficiently.

In conclusion, the ICD-10 code for Pulmonary Hypertension, specifically CTEPH, is I27.2. It’s essential to be aware of the specific subcodes under I27 to accurately represent the condition. For general hypertension, the code is I10. Additionally, CPT codes are crucial for describing the medical procedures related to Pulmonary Hypertension.

Understanding and utilizing these codes correctly is not only a matter of billing but also an essential part of effective healthcare management.

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