Anticoagulation ICD-10-CM Codes

Learn about the anticoagulation ICD codes you can use through this guide.

By Matt Olivares on Jul 16, 2025.

What ICD codes are used for anticoagulation?

When addressing anticoagulation, one must be familiar with the specific anticoagulation ICD codes for accurate clinical documentation and billing. Anticoagulation refers to the use of medications to prevent or treat blood clots. Here are some commonly used ICD codes related to anticoagulation:

Z79.01 - Long-term (current) use of anticoagulants: This code represents patients on anticoagulants for an extended period.
T45.515A - Adverse effect of anticoagulants, initial encounter: Used when a patient experiences side effects or adverse reactions from anticoagulant medications. This code is for initial encounters. Please use T45.515D for subsequent encounters, and T45.515S for sequela cases.
I26.99 - Other pulmonary embolism without acute cor pulmonale: This code can be used for cases where anticoagulation might be initiated due to pulmonary embolism without associated heart complications.

Using the correct codes ensures that patients receive the appropriate care and that healthcare providers are reimbursed accurately.

Which anticoagulation ICD codes are billable?

All the ICD codes mentioned for anticoagulation are typically billable as they represent specific medical conditions or therapeutic interventions that require medical attention. Proper documentation is essential to ensure accurate billing and prevent potential discrepancies.

Clinical information

Anticoagulation therapy plays a vital role in various medical conditions. Here's what clinicians and patients should be aware of:

Anticoagulants prevent or treat blood clots in conditions like atrial fibrillation, deep vein thrombosis, and pulmonary embolism.
Common anticoagulants include warfarin, heparin, and newer agents like rivaroxaban and apixaban.
Regular monitoring, including blood tests, is crucial when on anticoagulation to ensure therapeutic levels and avoid complications.
Potential side effects include bleeding, bruising, and interactions with other medications or foods.
It's essential for patients to be aware of the signs of excessive bleeding and to inform healthcare providers of all medicines and supplements they are taking. This is so that efforts can be made to minimize bleeding risks by conducting the necessary bleeding risk assessments to determine risk factors and potential unwanted drug interactions.

Synonyms include

Blood thinners
Clot prevention medication
Antithrombotic therapy
Coagulation inhibitors
Thromboprophylaxis
Anticoagulation for deep vein thrombosis
Direct oral anticoagulants
Anticoagulant therapy
Low molecular weight heparin (LMWH)
Heparin-induced thrombocytopenia
Vitamin K antagonis therapy
Antagonist oral anticoagulants
Major bleeding due to anticoagulant overuse
Issues with blood vessels due to anticoagulation medicine misuse
Increased bleeding risk due to anticoagulant medications misuse
Acute coronary syndrome due to anticoagulant misuse
Increased risk of bleeding
Venous thromboembolism due to anticoagulant misuse
Gastrointestinal bleeding risk due to anticoagulant misuse
Warfarin therapy
Anticoagulation and clotting factors
Patients taking oral anticoagulants
Oral direct thrombin inhibitors

Popular search terms for anticoagulation ICD-10 codes

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