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ICD-10-CM 2027

ICD-10 code for aortitis

I77.6

Arteritis, unspecified

✓ Billable / specific

From the official ICD-10-CM alphabetic index entry “Aortitis (nonsyphilitic) (calcific)”. Page updated September 29, 2026.

About coding aortitis

The ICD-10-CM code for aortitis is I77.6 (Arteritis, unspecified). The official index lists 6 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on I77.6.

Within I77, choose I77.6 (Arteritis, unspecified) only when documentation doesn't support a more specific option: arteriovenous fistula, acquired (I77.0), stricture of artery (I77.1), rupture of artery (I77.2), arterial fibromuscular dysplasia (I77.3), celiac artery compression syndrome (I77.4), necrosis of artery (I77.5), other arterial dissection (I77.7), other specified disorders of arteries and arterioles (I77.8) and 1 more.

Don't report I77.6 together with the conditions in its Excludes1 note: aortic arch (M31.4), cerebral NEC (I67.7), coronary (I25.89), deformans (I70.-) and 3 more.

It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.

More specific aortitis codes (official index)

  • arteriosclerotic I70.0 — Atherosclerosis of aorta
  • Doehle-Heller A52.02 — Syphilitic aortitis
  • luetic A52.02 — Syphilitic aortitis
  • rheumatic
  • specific (syphilitic) A52.02 — Syphilitic aortitis
  • syphilitic A52.02 — Syphilitic aortitis
  • congenital A50.54 — Late congenital cardiovascular syphilis

Don't confuse with (Excludes1 for I77.6)

Common questions about aortitis ICD-10 codes

What is the ICD-10 code for aortitis?

I77.6 — Arteritis, unspecified. More specific codes apply when the documentation supports them: I70.0, A52.02, A52.02, A52.02 and others below.

What is the ICD-10 code for arteriosclerotic aortitis?

I70.0 — Atherosclerosis of aorta.

What is the ICD-10 code for doehle-heller aortitis?

A52.02 — Syphilitic aortitis.

What is the ICD-10 code for luetic aortitis?

A52.02 — Syphilitic aortitis.

What is the ICD-10 code for specific aortitis?

A52.02 — Syphilitic aortitis.

What is the ICD-10 code for syphilitic aortitis?

A52.02 — Syphilitic aortitis.

Is I77.6 billable?

Yes. I77.6 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).

Can I77.6 be used as a principal diagnosis?

Yes. The Medicare Code Editor doesn't restrict I77.6 as a principal diagnosis.

Is I77.6 a CC or MCC?

No. I77.6 is neither a CC nor an MCC under MS-DRG v44.0.