Billable / Specific Code
ICD-10-CM I70.321 is the diagnosis code for Atherosclerosis of unspecified type of bypass graft(s) of the extremities with rest pain, right leg. This code falls under the section "Diseases of arteries, arterioles and capillaries" within Chapter 9 — Diseases of the circulatory system (I00-I99). It is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.
Always refer to the official ICD-10-CM Tabular List for complete coding guidelines. Ensure documentation supports the specificity of the code selected. When in doubt, consult a certified medical coder or the latest CMS guidelines.
Understanding where I70.321 sits in the ICD-10-CM classification helps ensure proper coding:
Yes, I70.321 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
I70.321 is the ICD-10-CM diagnosis code for "Atherosclerosis of unspecified type of bypass graft(s) of the extremities with rest pain, right leg". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
The parent code of I70.321 is I70.32 ("Atherosclerosis of unspecified type of bypass graft(s) of the extremities with rest pain"). I70.321 provides a more specific classification within this category.
I70.321 is located in Section I70-I79 — "Diseases of arteries, arterioles and capillaries" within Chapter 9 of the ICD-10-CM Tabular List.
Use I70.321 when the patients documented diagnosis matches "Atherosclerosis of unspecified type of bypass graft(s) of the extremities with rest pain, right leg" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.
The ICD-10-CM code for Atherosclerosis of unspecified type of bypass graft(s) of the extremities with rest pain, right leg is I70.321.
Yes, I70.321 can be used as a primary diagnosis code since it is billable and specific.
I70.321 is in Chapter 9 of the ICD-10-CM Tabular List.
Yes, I70.321 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.