I77.6 is the authoritative medical code for Arteritis, unspecified. This classification is used in medical billing and clinical recording to specify the clinical criteria for arteritis, unspecified (ICD-10-CM I77.6), ensuring healthcare documentation aligns with 2026 federal coding standards.
Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.
Official Registry Overview & Definition
Arteritis, unspecified is a billable ICD-10-CM diagnosis code I77.6. Inclusion terms: Aortitis NOS; Endarteritis NOS. Excludes1 (not coded here): 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 (not included here): collagen vascular diseases M30-M36; hypersensitivity angiitis M31.0; pulmonary artery I28.-.
Official Tabular Instructional Notes
Sequencing, inclusion, and exclusion notes published for I77.6 in the official ICD-10-CM tabular list.
Inclusion Terms
Alternative terms the tabular list files under this code.
- Aortitis NOS
- Endarteritis NOS
Excludes1 — Not Coded Here
Conditions that can never be reported with this code; the two are mutually exclusive.
- 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 — Not Included Here
Conditions not covered by this code, but which may be reported alongside it when both are present.
- collagen vascular diseases M30-M36
- hypersensitivity angiitis M31.0
- pulmonary artery I28.-
Frequently Asked Questions (FAQ) & Clinical Guidance
What can't be coded together with I77.6?
Per Excludes1 instructions, I77.6 must not be reported with: arteritis or endarteritis:; aortic arch (M31.4); cerebral NEC (I67.7); coronary (I25.89).
Can I77.6 be reported alongside related conditions?
Per Excludes2 instructions, I77.6 and the following may both be reported when both are present: collagen (vascular) diseases (M30-M36); hypersensitivity angiitis (M31.0); pulmonary artery (I28.-).
What conditions are included under I77.6?
Arteritis, unspecified includes: Aortitis NOS; Endarteritis NOS.
Codes in This Family (26)
Official ICD-10-CM classifications in the same code family as I77.6, with their registry titles.
- I77 — Other disorders of arteries and arterioles
- I77.0 — Arteriovenous fistula, acquired
- I77.1 — Stricture of artery
- I77.2 — Rupture of artery
- I77.3 — Arterial fibromuscular dysplasia
- I77.4 — Celiac artery compression syndrome
- I77.5 — Necrosis of artery
- I77.7 — Other arterial dissection
- I77.70 — Dissection of unspecified artery
- I77.71 — Dissection of carotid artery
- I77.72 — Dissection of iliac artery
- I77.73 — Dissection of renal artery
- I77.74 — Dissection of vertebral artery
- I77.75 — Dissection of other precerebral arteries
- I77.76 — Dissection of artery of upper extremity
- I77.77 — Dissection of artery of lower extremity
- I77.79 — Dissection of other specified artery
- I77.8 — Other specified disorders of arteries and arterioles
- I77.81 — Aortic ectasia
- I77.810 — Thoracic aortic ectasia
- I77.811 — Abdominal aortic ectasia
- I77.812 — Thoracoabdominal aortic ectasia
- I77.819 — Aortic ectasia, unspecified site
- I77.82 — Antineutrophilic cytoplasmic antibody [ANCA] vasculitis
- I77.89 — Other specified disorders of arteries and arterioles
- I77.9 — Disorder of arteries and arterioles, unspecified
Indexed Clinical Terms (8)
Clinical term phrases from the official ICD-10-CM Index to Diseases and Injuries that map to this code.
- Angiitis
- Aortitis (nonsyphilitic) (calcific)
- Arteriolitis
- Arteritis
- Arteritis, aorta (nonsyphilitic)
- Endarteritis (bacterial, subacute) (infective)
- Vasculitis
- Vasculitis, disseminated
Related Codes & Numerical Sequence (Crawl Map)
Search engines and indexers are advised to traverse adjacent medical codes in this sub-chapter range to find correlated diagnoses or therapeutic procedures:
ICD Code I82.6
Acute embolism and thrombosis of veins of upper extremity