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Home/Diagnosis/ICD-10 Coding for Prothrombin Time Test

ICD-10 Coding for Prothrombin Time Test

I48.91
Z79.01

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

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

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

Use ICD-10 code I48.91 for unspecified atrial fibrillation, ensuring proper documentation in clinical notes.

Primary ICD-10-CM Codes

Unspecified atrial fibrillation

Billable Code
I48.91
Billable

Diagnostic Criteria

  • • Presence of atrial fibrillation requiring anticoagulation

Applicable To

  • • Atrial fibrillation

Important Notes

  • • Ensure documentation specifies atrial fibrillation as the reason for anticoagulation.

Long term (current) use of anticoagulants

Billable Code
Z79.01
Billable

Applicable To

  • • Chronic anticoagulation therapy

Important Notes

  • • Always document the specific anticoagulant used.
Ancillary Codes

Additional codes that may be used with this diagnosis

85610

Prothrombin time

Use to report the PT/INR test performed.

Frequently Asked Questions

What is the ICD-10 code for protime testing?

The ICD-10 code for protime testing is typically linked to the condition being monitored, such as I48.91 for atrial fibrillation.

How do you document a protime test?

Document the INR value, therapeutic range, condition treated, and any dose adjustments. Example: INR 3.2 for atrial fibrillation, warfarin reduced.

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