Billable / Specific Code
ICD-10-CM I78.9 is the diagnosis code for Disease of capillaries, unspecified. This code falls under the section "Diseases of arteries, arterioles and capillaries" within Chapter 9 — Diseases of the circulatory system (I00-I99). It is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. 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 I78.9 sits in the ICD-10-CM classification helps ensure proper coding:
Yes, I78.9 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
I78.9 is the ICD-10-CM diagnosis code for "Disease of capillaries, unspecified". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
The parent code of I78.9 is I78 ("Diseases of capillaries"). I78.9 provides a more specific classification within this category.
I78.9 is located in Section I70-I79 — "Diseases of arteries, arterioles and capillaries" within Chapter 9 of the ICD-10-CM Tabular List.
Use I78.9 when the patients documented diagnosis matches "Disease of capillaries, unspecified" 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 Disease of capillaries, unspecified is I78.9.
Yes, I78.9 can be used as a primary diagnosis code since it is billable and specific.
I78.9 is in Chapter 9 of the ICD-10-CM Tabular List.
Yes, I78.9 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.