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Home/Diagnosis/ICD-10 Coding for Prothrombin Time

ICD-10 Coding for Prothrombin Time

Z79.01
I48.91

Complete ICD-10-CM coding and documentation guide for icd-10 coding for prothrombin time includes clinical validation requirements, medical necessity guidelines, and coding policies.

Also Known as:
PT
Protime
Clotting Time
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Key Information: ICD-10 Coding for Prothrombin Time

Essential facts and insights about ICD-10 Coding for Prothrombin Time

Use ICD-10 code Z79.01 for long term (current) use of anticoagulants, ensuring proper documentation in clinical notes.

Primary ICD-10-CM Codes

Long term (current) use of anticoagulants

Billable Code
Z79.01
Billable

Diagnostic Criteria

  • • Patient is on long-term anticoagulant therapy

Applicable To

  • • Warfarin therapy

Important Notes

  • • Ensure documentation specifies the anticoagulant and the condition being managed.

Unspecified atrial fibrillation

Billable Code
I48.91
Billable

Diagnostic Criteria

  • • ECG confirmation of atrial fibrillation
  • • Clinical notes indicating chronic management

Applicable To

  • • Chronic atrial fibrillation

Important Notes

  • • Ensure atrial fibrillation is confirmed and documented.
Ancillary Codes

Additional codes that may be used with this diagnosis

I48.91

Unspecified atrial fibrillation

Use when PT testing is related to atrial fibrillation management.

Z79.01

Long term (current) use of anticoagulants

Use to document anticoagulant therapy in atrial fibrillation.

Frequently Asked Questions

What is the ICD-10 code for prothrombin time testing?

The ICD-10 code for prothrombin time testing is often linked with Z79.01 for long-term anticoagulant use, indicating the medical necessity for PT/INR monitoring.

How do you document prothrombin time for warfarin therapy?

Document the PT/INR values, reference ranges, and the clinical indication such as warfarin therapy for atrial fibrillation, using codes like Z79.01 and I48.91.

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