ICD10BillableValid for clinical use
ICD-10 Code I77.6: Arteritis, unspecified
Reviewed by HealthAssure Clinical TeamUpdated 26 May 2026
What is this code?
ICD-10 codes are diagnosis classification codes used in healthcare records, reporting, coding workflows, and billing support. This code sits within the broader ICD-10 area for Diseases of the circulatory system (I00-I99).
When is it used?
- May be used when a clinician documents arteritis, unspecified in a patient's medical record.
- May appear in hospital records, claims, referrals, and clinical documentation.
- This code can be used as a clinically usable diagnosis entry in standardized coding workflows.
What it does not mean
- A code alone does not explain severity, treatment plan, or outcome.
- A medical code should not be treated as a substitute for a doctor's diagnosis or advice.
Code hierarchy
chapter
9Diseases of the circulatory system (I00-I99)
block
I70-I79Diseases of arteries, arterioles and capillaries
category
I77Other disorders of arteries and arterioles
currentI77
Official coding notes
Inclusion terms
- Aortitis NOS
- Endarteritis NOS
Excludes1 (do not code together)
- 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.-)
Where you may see this code
You may see this code in hospital records, discharge summaries, insurance claims, encounter documentation, referrals, or other healthcare billing and coding records.
Related specialists
CardiologistGeneral Physician
Related codes
I77.0Arteriovenous fistula, acquiredcodeI77.1Stricture of arterycodeI77.2Rupture of arterycodeI77.3Arterial fibromuscular dysplasiacodeI77.4Celiac artery compression syndromecodeI77.5Necrosis of arterycodeI77.7Other arterial dissectioncategoryI77.8Other specified disorders of arteries and arteriolescategoryI77.9Disorder of arteries and arterioles, unspecifiedcode
Sibling codes
I77.0Arteriovenous fistula, acquiredbillableI77.1Stricture of arterybillableI77.2Rupture of arterybillableI77.3Arterial fibromuscular dysplasiabillableI77.4Celiac artery compression syndromebillableI77.5Necrosis of arterybillableI77.7Other arterial dissectionI77.8Other specified disorders of arteries and arteriolesI77.9Disorder of arteries and arterioles, unspecifiedbillable
Coverage-related procedures and services
CPT 11720high
DEBRIDEMENT OF NAIL(S) BY ANY METHOD(S); 1 TO 5
Source: CMS coverage guidance
CPT 11721high
DEBRIDEMENT OF NAIL(S) BY ANY METHOD(S); 6 OR MORE
Source: CMS coverage guidance
HCPCS G0127high
TRIMMING OF DYSTROPHIC NAILS, ANY NUMBER
Source: CMS coverage guidance
CPT 11719high
TRIMMING OF NONDYSTROPHIC NAILS, ANY NUMBER
Source: CMS coverage guidance
CPT 72126high
COMPUTED TOMOGRAPHY, CERVICAL SPINE; WITH CONTRAST MATERIAL
Source: CMS coverage guidance
CPT 72125high
COMPUTED TOMOGRAPHY, CERVICAL SPINE; WITHOUT CONTRAST MATERIAL
Source: CMS coverage guidance
Mapped diagnoses and classifications
SNOMED_CT 70933002high
Aortitis
Source: SNOMED International ICD-10 map
SNOMED_CT 52089001high
Arteritis
Source: SNOMED International ICD-10 map
SNOMED_CT 427213005high
Autoimmune vasculitis
Source: SNOMED International ICD-10 map
SNOMED_CT 1259028000high
Brachial plexus lesion due to vasculitis
Source: SNOMED International ICD-10 map
SNOMED_CT 257812009high
Chronic peri-aortitis
Source: SNOMED International ICD-10 map
SNOMED_CT 33806008high
Endarteritis
Source: SNOMED International ICD-10 map
Coding guidelines
Compatibility
Legacy and official ICD code match exactly.
Legacy codes
I77.6
Common synonyms
Arteritis, unspecifiedArteritis
Frequently asked questions
About this content
This page is prepared by HealthAssure's clinical team using official coding standards from ICD-10. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.