I77.6

Billable

Arteritis, unspecified

Diseases of the circulatory system (I00-I99)

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Also Known As

Aortitis NOSEndarteritis NOS

Excludes1

direct

Cannot be coded with I77.6

  • arteritis or endarteritis:
  • aortic arch (M31.4)
  • cerebral NEC (I67.7)
  • coronary (I25.89)
  • deformans (I70.-)
  • giant cell (M31.5, M31.6)
  • obliterans (I70.-)
  • senile (I70.-)

⚠️ Excludes2

inherited from I77

Rules from parent category I77: Other disorders of arteries and arterioles

  • collagen (vascular) diseases (M30-M36)
  • hypersensitivity angiitis (M31.0)
  • pulmonary artery (I28.-)

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Code Information

CodeI77.6
BillableYes
ParentI77
CategoryDiseases of the circulatory system (I00-I99)
Excludes18 rule(s)
Excludes23 note(s)

Data Source

CMS ICD-10-CM 2026 Tabular List

Updated October 1, 2025 (FY2026)