Non-Billable / Non-Specific Code
ICD-10-CM I80 is the diagnosis code for Phlebitis and thrombophlebitis. This code falls under the section "Diseases of veins, lymphatic vessels and lymph nodes, not elsewhere classified" 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.
The following conditions should never be coded at the same time as I80. They are mutually exclusive:
Understanding where I80 sits in the ICD-10-CM classification helps ensure proper coding:
No, I80 is a non-billable/non-specific code. You should use a more specific sub-code for billing and reimbursement.
I80 is the ICD-10-CM diagnosis code for "Phlebitis and thrombophlebitis". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
I80 is located in Section I80-I89 — "Diseases of veins, lymphatic vessels and lymph nodes, not elsewhere classified" within Chapter 9 of the ICD-10-CM Tabular List.
I80 has 6 sub-code(s) that provide more specific detail: I80.0, I80.1, I80.2, I80.3, I80.8 and more.
Use I80 when the patients documented diagnosis matches "Phlebitis and thrombophlebitis" 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 Phlebitis and thrombophlebitis is I80.
No, I80 is non-billable. Use a more specific sub-code for primary diagnosis billing.
I80 is in Chapter 9 of the ICD-10-CM Tabular List.
Type 1 Excludes for I80 include: venous embolism and thrombosis of lower extremities (I82.4-, I82.5-, I82.81-).
Yes, I80 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.