ICD10BillableValid for clinical use
ICD-10 Code I70.90: Unspecified atherosclerosis
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 unspecified atherosclerosis 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
I70Atherosclerosis
category
I70.9Other and unspecified atherosclerosis
currentI70.9
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
Sibling codes
Coverage-related procedures and services
CPT 83090high
HOMOCYSTEINE
Source: CMS coverage guidance
CPT 82172high
APOLIPOPROTEIN, EACH
Source: CMS coverage guidance
CPT 86141high
C-REACTIVE PROTEIN; HIGH SENSITIVITY (HSCRP)
Source: CMS coverage guidance
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
CPT 83695high
LIPOPROTEIN (A)
Source: CMS coverage guidance
Mapped diagnoses and classifications
SNOMED_CT 50808002high
Atheroma of artery
Source: SNOMED International ICD-10 map
SNOMED_CT 720519003high
Atherosclerosis, deafness, diabetes, epilepsy, nephropathy syndrome
Source: SNOMED International ICD-10 map
SNOMED_CT 302728008high
Endarteritis deformans
Source: SNOMED International ICD-10 map
SNOMED_CT 302930003high
Endarteritis obliterans
Source: SNOMED International ICD-10 map
SNOMED_CT 361132001high
Senile arteriosclerosis
Source: SNOMED International ICD-10 map
SNOMED_CT 111291001high
Senile endarteritis
Source: SNOMED International ICD-10 map
Coding guidelines
Compatibility
Legacy and official ICD code match exactly.
Legacy codes
I70.90
Common synonyms
Unspecified atherosclerosis
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.