I70.203 – Unspecified atherosclerosis of native arteries of extremities, bilateral legs

ICD-10-CM 2027 diagnosis code · Diseases of arteries, arterioles and capillaries

Billable code

ICD-10-CM code I70.203
Code
I70.203 (claims format: I70203)
Description
Unspecified atherosclerosis of native arteries of extremities, bilateral legs
Short description
Unsp athscl native arteries of extremities, bilateral legs
Billable
Yes – valid for HIPAA-covered transactions
Valid for
Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter
9. Diseases of the circulatory system (I00-I99)
Block
I70-I79 Diseases of arteries, arterioles and capillaries
Parent codes
I70 › I70.2 › I70.20

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

I70 – Atherosclerosis

Includes:
  • arteriolosclerosis
  • arterial degeneration
  • arteriosclerosis
  • arteriosclerotic vascular disease
  • arteriovascular degeneration
  • atheroma
  • endarteritis deformans or obliterans
  • senile arteritis
  • senile endarteritis
  • vascular degeneration
Excludes2 (not included here):
  • arteriosclerotic cardiovascular disease (I25.1-)
  • arteriosclerotic heart disease (I25.1-)
  • atheroembolism (I75.-)
  • cerebral atherosclerosis (I67.2)
  • coronary atherosclerosis (I25.1-)
  • mesenteric atherosclerosis (K55.1)
  • precerebral atherosclerosis (I67.2)
  • primary pulmonary atherosclerosis (I27.0)
Use additional code:
  • code to identify:
  • exposure to environmental tobacco smoke (Z77.22)
  • history of tobacco dependence (Z87.891)
  • occupational exposure to environmental tobacco smoke (Z57.31)
  • tobacco dependence (F17.-)
  • tobacco use (Z72.0)

I70.2 – Atherosclerosis of native arteries of the extremities

Applicable to:
  • Mönckeberg's (medial) sclerosis
Excludes2 (not included here):
  • atherosclerosis of bypass graft of extremities (I70.30-I70.79)
Use additional code:
  • code, if applicable, to identify chronic total occlusion of artery of extremity (I70.92)

Index terms for I70.203

Entries in the ICD-10-CM alphabetic index that lead to this code:

Related codes in I70.20

Frequently asked questions

What is ICD-10 code I70.203?

I70.203 is the ICD-10-CM code for unspecified atherosclerosis of native arteries of extremities, bilateral legs, in the block I70-I79 (Diseases of arteries, arterioles and capillaries).

Is I70.203 a billable code?

Yes. I70.203 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does I70.203 belong to?

It belongs to category I70 – Atherosclerosis.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.