ICD-10 Code I73 – Other peripheral vascular diseases (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I73 – Other peripheral vascular diseases
What it is
I73 is a category for peripheral vascular disorders that do not fit a more specific code. It covers diseases of the blood vessels in the limbs and other peripheral circulation problems; check documentation for the exact condition.
Clinical signs
Clinical features vary; refer to documentation. Common findings may include limb pain, color change, coldness, diminished pulses, or poor circulation, but the specific diagnosis must be confirmed in the record.
When to use this code
Use I73 when the provider documents a peripheral vascular disease and no more specific ICD-10-CM code is available. It may apply when the note describes peripheral circulatory disease, peripheral vascular disorder, or another nonspecific vascular condition.
Code the documented condition as written and verify whether a more specific diagnosis, such as peripheral angiopathy or vasospasm, is recorded elsewhere in the chart.
Do not use for
Do not use I73 when the record supports a more specific peripheral vascular code. Do not use it for arterial disease, venous disease, or Raynaud-type conditions unless the documentation actually points to this category.
Coding tip
Read the provider’s exact wording carefully; I73 is a fallback category, so choose a more specific code whenever the documentation allows it.