Non-Billable / Non-Specific Code
ICD-10-CM I28 is the diagnosis code for Other diseases of pulmonary vessels. This code falls under the section "Pulmonary heart disease and diseases of pulmonary circulation" within Chapter 9 — Diseases of the circulatory system (I00-I99). It is a non-billable/non-specific ICD-10-CM code that should not be used for reimbursement. A more specific sub-code is required for billing. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.
Always refer to the official ICD-10-CM Tabular List for complete coding guidelines. Ensure documentation supports the specificity of the code selected. When in doubt, consult a certified medical coder or the latest CMS guidelines.
Understanding where I28 sits in the ICD-10-CM classification helps ensure proper coding:
No, I28 is a non-billable/non-specific code. You should use a more specific sub-code for billing and reimbursement.
I28 is the ICD-10-CM diagnosis code for "Other diseases of pulmonary vessels". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
I28 is located in Section I26-I28 — "Pulmonary heart disease and diseases of pulmonary circulation" within Chapter 9 of the ICD-10-CM Tabular List.
I28 has 4 sub-code(s) that provide more specific detail: I28.0, I28.1, I28.8, I28.9.
Use I28 when the patients documented diagnosis matches "Other diseases of pulmonary vessels" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.
The ICD-10-CM code for Other diseases of pulmonary vessels is I28.
No, I28 is non-billable. Use a more specific sub-code for primary diagnosis billing.
I28 is in Chapter 9 of the ICD-10-CM Tabular List.
Yes, I28 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.