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I70.301 vs I70.302

I70.301 (Unspecified atherosclerosis of unspecified type of bypass graft(s) of the extremities, right leg) compared with I70.302 (Unspecified atherosclerosis of unspecified type of bypass graft(s) of the extremities, left leg), from the official CMS tabular data. I70.301 and I70.302 code the same condition on opposite sides.

Relationship

Review

Laterality relationship

I70.301
Right
Unspecified atherosclerosis of unspecified type of bypass graft(s) of the extremities, right leg
↔
I70.302
Left
Unspecified atherosclerosis of unspecified type of bypass graft(s) of the extremities, left leg

Same condition; these differ only in which side is documented.

These codes share a category and title and differ only in the side affected. The documentation decides which applies, and a bilateral code is reported only where the code set provides one.

Source: ICD-10-CM tabular list (laterality variant derived from the code title)

Can these codes be reported together?

Same condition, opposite side. I70.301 and I70.302 name the same condition on opposite sides of the body.

Same category and title, differing only in which side is affected — the documentation decides which one applies, and a bilateral code is reported only where the code set provides one.

Side by side

I70.301Unspecified atherosclerosis of unspecified type of bypass graft(s) of the extremities, right legI70.302Unspecified atherosclerosis of unspecified type of bypass graft(s) of the extremities, left leg
Billing statusBillableBillable
ClassificationI00-I99 — Diseases of the Circulatory System (I00-I99)I00-I99 — Diseases of the Circulatory System (I00-I99)
DefinitionUnspecified atherosclerosis of unspecified type of bypass graft(s) of the extremities, right leg is a billable ICD-10-CM diagnosis code (I70.301).Unspecified atherosclerosis of unspecified type of bypass graft(s) of the extremities, left leg is a billable ICD-10-CM diagnosis code (I70.302).
Includes
arteriolosclerosis
arterial degeneration
arteriosclerosis
arteriosclerotic vascular disease
arteriolosclerosis
arterial degeneration
arteriosclerosis
arteriosclerotic vascular disease
Use additional code
code, if applicable, to identify chronic total occlusion of artery of extremity (I70.92)
code to identify:
exposure to environmental tobacco smoke (Z77.22)
code, if applicable, to identify chronic total occlusion of artery of extremity (I70.92)
code to identify:
exposure to environmental tobacco smoke (Z77.22)
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Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources