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Home/Diagnosis/ICD-10 Coding for Aortic Dilatation

ICD-10 Coding for Aortic Dilatation

I77.810
I71.21

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

Also Known as:
Aortic Ectasia
Aortic Aneurysm
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Key Information: ICD-10 Coding for Aortic Dilatation

Essential facts and insights about ICD-10 Coding for Aortic Dilatation

Use ICD-10 code I77.810 for thoracic aortic ectasia, ensuring proper documentation in clinical notes.

Primary ICD-10-CM Codes

Thoracic aortic ectasia

Billable Code
I77.810
Billable

Diagnostic Criteria

clinical:
  • • Dilation <3 cm on imaging

Applicable To

  • • Mild aortic dilatation

Important Notes

  • • Ensure documentation specifies 'ectasia' and measures <3 cm.

Aneurysm of ascending aorta, without rupture

Billable Code
I71.21
Billable

Diagnostic Criteria

clinical:
  • • Imaging confirms dilation ≥3 cm
  • • No rupture present

Applicable To

  • • Aortic aneurysm ≥3 cm

Important Notes

  • • Document exact size and location of aneurysm.
Ancillary Codes

Additional codes that may be used with this diagnosis

Q87.4

Marfan syndrome

Sequence first if aortic dilatation is due to Marfan syndrome.

Frequently Asked Questions

What is the ICD-10 code for aortic dilatation?

The ICD-10 code for thoracic aortic dilatation, termed as ectasia, is I77.810. For aortic aneurysm, use I71.21 if the dilation is ≥3 cm.

How to differentiate between aortic ectasia and aneurysm?

Aortic ectasia is defined as dilation <3 cm, coded as I77.810. Aneurysm is ≥3 cm, coded as I71.21.

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