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ICD-10/I70.202

I70.202 ICD-10-CM Code: Unspecified atherosclerosis of native arteries of extremities, left leg

Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.

Inpatient Payment Groups (MS-DRG)

MS-DRGs this diagnosis helps define, as principal or secondary, per the CMS ICD-10-CM/PCS MS-DRG Definitions Manual v43.0 (FY2026), Appendix B.

  • MS-DRG 299 — PERIPHERAL VASCULAR DISORDERS WITH MCC (MDC 05)
  • MS-DRG 300 — PERIPHERAL VASCULAR DISORDERS WITH CC (MDC 05)
  • MS-DRG 301 — PERIPHERAL VASCULAR DISORDERS WITHOUT CC/MCC (MDC 05)

A diagnosis appearing in a group's logic does not by itself determine the DRG assigned to a stay; the grouper uses the full claim.

Code Set: Valid FY2026 and FY2027. FY2026 took effect October 1, 2025.

Official Registry Overview & Definition

Unspecified atherosclerosis of native arteries of extremities, left leg is a billable ICD-10-CM diagnosis code (I70.202).

Official Tabular Instructional Notes

Sequencing, inclusion, and exclusion notes published for I70.202 in the official ICD-10-CM tabular list.

Includes

Conditions the official ICD-10-CM tabular list includes under this code.

  • arteriolosclerosis
  • arterial degeneration
  • arteriosclerosis
  • arteriosclerotic vascular disease
  • arteriovascular degeneration
  • atheroma
  • endarteritis deformans or obliterans
  • senile arteritis
  • senile endarteritis
  • vascular degeneration

Excludes2 — Not Included Here

Conditions not covered by this code, but which may be reported alongside it when both are present.

  • atherosclerosis of bypass graft of extremities (I70.30-I70.79)
  • 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

Supplementary codes the tabular list directs you to add.

  • Use additional code, if applicable, to identify chronic total occlusion of artery of extremity (I70.92)
  • Use additional 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)

Nearest Codes in This Family

Official ICD-10-CM classifications closest to I70.202 in its code family, with their registry titles.

  • I70.0 — Atherosclerosis of aorta
  • I70.1 — Atherosclerosis of renal artery
  • I70.2 — Atherosclerosis of native arteries of the extremities
  • I70.20 — Unspecified atherosclerosis of native arteries of extremities
  • I70.201 — Unspecified atherosclerosis of native arteries of extremities, right leg
  • I70.203 — Unspecified atherosclerosis of native arteries of extremities, bilateral legs
  • I70.208 — Unspecified atherosclerosis of native arteries of extremities, other extremity
  • I70.209 — Unspecified atherosclerosis of native arteries of extremities, unspecified extremity
  • I70.21 — Atherosclerosis of native arteries of extremities with intermittent claudication
  • I70.211 — Atherosclerosis of native arteries of extremities with intermittent claudication, right leg

View all codes in the I70 family

Indexed Clinical Terms (1)

Clinical term phrases from the official ICD-10-CM Index to Diseases and Injuries that map to this code.

  • Arteriosclerosis, arteriosclerotic (diffuse) (obliterans) (of) (senile) (with calcification), extremities (native arteries), leg, left