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I77.0

I77.0Arteriovenous fistula, acquired

Billable / specific codeICD-10-CM

I77.0 is a billable, specific ICD-10-CM code for arteriovenous fistula, acquired. It is valid for submission on a claim.

Excludes1 — never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

  • arteriovenous aneurysm NOS (Q27.3-)
  • presence of arteriovenous shunt (fistula) for dialysis (Z99.2)
  • traumatic - see injury of blood vessel by body region

Excludes2 — not included here, but may coexist

The excluded condition is not part of this code, but a patient can have both. You may code both.

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

  • Aneurysmal varix
  • Arteriovenous aneurysm, acquired

Other codes that can never be billed with I77.0

These codes carry an Excludes1 note pointing at I77.0. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading I77.0 alone.

  • Q27.3Arteriovenous malformation (peripheral)

Risk adjustment

I77.0 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.

Medicare coverage

I77.0 is named in 25 Medicare coverage policies 25 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.

  • A55354Billing and Coding: Frequency of Hemodialysis
  • A55672Billing and Coding: Frequency of Hemodialysis
  • A55675Billing and Coding: Frequency of Hemodialysis
  • A55703Billing and Coding: Frequency of Hemodialysis

How I77.0 is indexed

Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to I77.0.

  • Fistulaarteriovenous(acquired) (nonruptured)
  • Varicoseaneurysm(ruptured)
  • Varixaneurysmal
  • Aneurysmarteriovenousacquired
  • Aneurysmarteriovenousspecified site NECacquired

Related codes at this level

Codes that share I77. If I77.0 is not quite right, the correct code is usually one of these.

Questions about I77.0

Is I77.0 a billable ICD-10-CM code?
Yes. I77.0 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does I77.0 sit in the tabular list?
Diseases of the circulatory system (I00-I99), in the block Diseases of arteries, arterioles and capillaries (I70-I79).
What cannot be coded together with I77.0?
I77.0 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.
ICD-10-CMFY2026-Apr· effective April 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release — see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.