ICD10BillableValid for clinical use
ICD-10 Code I70.55: Atherosclerosis of nonautologous biological bypass graft(s) of other extremity with ulceration
Reviewed by HealthAssure Clinical TeamUpdated 26 May 2026
What is this code?
ICD-10 codes are diagnosis classification codes used in healthcare records, reporting, coding workflows, and billing support. This code sits within the broader ICD-10 area for Diseases of the circulatory system (I00-I99).
When is it used?
- May be used when a clinician documents atherosclerosis of nonautologous biological bypass graft(s) of other extremity with ulceration in a patient's medical record.
- May appear in hospital records, claims, referrals, and clinical documentation.
- This code can be used as a clinically usable diagnosis entry in standardized coding workflows.
What it does not mean
- A code alone does not explain severity, treatment plan, or outcome.
- A medical code should not be treated as a substitute for a doctor's diagnosis or advice.
Code hierarchy
chapter
9Diseases of the circulatory system (I00-I99)
block
I70-I79Diseases of arteries, arterioles and capillaries
category
I70Atherosclerosis
category
I70.5Atherosclerosis of nonautologous biological bypass graft(s) of the extremities
currentI70.5
Official coding notes
Includes
- any condition classifiable to I70.518, I70.528, and I70.538
Applicable to
- code to identify severity of ulcer (L98.49)
Use additional code
- code to identify severity of ulcer (L98.49)
Where you may see this code
You may see this code in hospital records, discharge summaries, insurance claims, encounter documentation, referrals, or other healthcare billing and coding records.
Related specialists
CardiologistGeneral Physician
Related codes
I70.50Unspecified atherosclerosis of nonautologous biological bypass graft(s) of the extremitiescategoryI70.51Atherosclerosis of nonautologous biological bypass graft(s) of the extremities intermittent claudicationcategoryI70.52Atherosclerosis of nonautologous biological bypass graft(s) of the extremities with rest paincategoryI70.53Atherosclerosis of nonautologous biological bypass graft(s) of the right leg with ulcerationcategoryI70.54Atherosclerosis of nonautologous biological bypass graft(s) of the left leg with ulcerationcategoryI70.56Atherosclerosis of nonautologous biological bypass graft(s) of the extremities with gangrenecategoryI70.59Other atherosclerosis of nonautologous biological bypass graft(s) of the extremitiescategory
Sibling codes
I70.50Unspecified atherosclerosis of nonautologous biological bypass graft(s) of the extremitiesI70.51Atherosclerosis of nonautologous biological bypass graft(s) of the extremities intermittent claudicationI70.52Atherosclerosis of nonautologous biological bypass graft(s) of the extremities with rest painI70.53Atherosclerosis of nonautologous biological bypass graft(s) of the right leg with ulcerationI70.54Atherosclerosis of nonautologous biological bypass graft(s) of the left leg with ulcerationI70.56Atherosclerosis of nonautologous biological bypass graft(s) of the extremities with gangreneI70.59Other atherosclerosis of nonautologous biological bypass graft(s) of the extremities
Coverage-related procedures and services
CPT 78434high
ABSOLUTE QUANTITATION OF MYOCARDIAL BLOOD FLOW (AQMBF), POSITRON EMISSION TOMOGRAPHY (PET), REST AND PHARMACOLOGIC STRESS (LIST SEPARATELY IN ADDITION TO CODE FOR PRIMARY PROCEDURE)
Source: CMS coverage guidance
CPT 0742Thigh
ABSOLUTE QUANTITATION OF MYOCARDIAL BLOOD FLOW (AQMBF), SINGLE-PHOTON EMISSION COMPUTED TOMOGRAPHY (SPECT), WITH EXERCISE OR PHARMACOLOGIC STRESS, AND AT REST, WHEN PERFORMED (LIST SEPARATELY IN ADDITION TO CODE FOR PRIMARY PROCEDURE)
Source: CMS coverage guidance
CPT 75710high
ANGIOGRAPHY, EXTREMITY, UNILATERAL, RADIOLOGICAL SUPERVISION AND INTERPRETATION
Source: CMS coverage guidance
CPT 97034high
APPLICATION OF A MODALITY TO 1 OR MORE AREAS; CONTRAST BATHS, EACH 15 MINUTES
Source: CMS coverage guidance
CPT 97032high
APPLICATION OF A MODALITY TO 1 OR MORE AREAS; ELECTRICAL STIMULATION (MANUAL), EACH 15 MINUTES
Source: CMS coverage guidance
CPT 97026high
APPLICATION OF A MODALITY TO 1 OR MORE AREAS; INFRARED
Source: CMS coverage guidance
Coding guidelines
Common synonyms
Atherosclerosis of nonautologous biological bypass graft(s) of other extremity with ulcerationAtherosclerosis of nonautologous biological bypass graftAtherosclerosis of nonautologous biological bypass graft s of other extremity with ulceration
Frequently asked questions
About this content
This page is prepared by HealthAssure's clinical team using official coding standards from ICD-10. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.