What is ICD-10 code I70.723?

I70.723 is the ICD-10-CM diagnosis code for Atherosclerosis of other type of bypass graft(s) of the extremities with rest pain, bilateral legs. Hardening and narrowing of bypass grafts in both legs causing pain at rest due to poor blood flow. I70.723 is a billable code, meaning it can be reported on a claim as a primary or secondary diagnosis when supported by documentation. I70.723 is part of the FY2026 ICD-10-CM code set published by the CMS National Center for Health Statistics and used on Medicare, Medicaid, and commercial claims in the United States.

Yes. I70.723 is a billable ICD-10-CM code that can be reported on professional and institutional claims as a primary or secondary diagnosis when the provider documentation supports the specific condition described. Billable codes in ICD-10-CM are coded to the highest level of specificity available for the documented diagnosis. I70.723 is current for fiscal year 2026 and remains in the active CMS ICD-10-CM code set published by the National Center for Health Statistics.

What is the V28 vs V24 difference for I70.723?

CMS phased in the V28 risk adjustment model over payment years 2024 (33%), 2025 (67%), and 2026 (100%), replacing V24. V28 consolidates HCC categories, removes some lower-acuity conditions, and recalibrates RAF weights across the entire model. For I70.723, V28 maps to Vascular Disease with Complications at RAF 0.455 while V24 mapped to Vascular Disease at RAF 0.288. Both models can still appear in legacy data and in payer-specific lookback periods.

What should coders know when reporting I70.723?

Use this code only when atherosclerosis with rest pain is documented in both legs Do not use this code if only one leg is affected; select the appropriate unilateral code instead Because I70.723 maps to a payment HCC, the documentation must also satisfy MEAT criteria (Monitor, Evaluate, Assess, or Treat) for the encounter to count toward the patient's risk adjustment score.

2026 ICD-10-CM I70.723: Atherosclerosis of other

ICD-10-CM Code View

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Code lookupI70.723Effective periodFY2026 Apr Update (Apr 1-Sep 30)

FY 2026 Apr update / Diseases of the circulatory system (I00-I99) / Diseases of arteries, arterioles and capillaries (I70-I79)

I70.723

Billable / SpecificICD-10-CMOfficial ICD-10-CMCodebook guidance

Atherosclerosis of other type of bypass graft(s) of the extremities with rest pain, bilateral legs

Hardening and narrowing of bypass grafts in both legs causing pain at rest due to poor blood flow.

Buddy Insight

CMS-HCC V28

Mapped

HCC 264

Vascular Disease with Complic...

RAF 0.455

CMS-HCC V24

Mapped

HCC 108

Vascular Disease

RAF 0.288

ACA/HHS

N/A

—

Not risk-adjusted for this model/period.

Not mapped

ESRD/PACE

Mapped

HCC 108

Vascular Disease

RAF 0.073

RXHCC

N/A

—

Not risk-adjusted for this model/period.

Not mapped

Code Book Path

Official

I70.7Atherosclerosis of other type of bypass graft(s) of the extremities

I70.72Atherosclerosis of other type of bypass graft(s) of the extremities with rest pain

I70.723Atherosclerosis of other type of bypass graft(s) of the extremities with rest pain, bilateral legs

Inclusion Terms

Official

ICD-10-CM does not list inclusion terms for I70.723 in this effective period.

Excludes 2

Official

ICD-10-CM does not list Excludes 2 notes for I70.723 in this effective period.

Related Child Codes

Official

I70.721Atherosclerosis of other type of bypass graft(s) of the extremities with rest pain, right leg

I70.722Atherosclerosis of other type of bypass graft(s) of the extremities with rest pain, left leg

I70.728Atherosclerosis of other type of bypass graft(s) of the extremities with rest pain, other extremity

I70.729Atherosclerosis of other type of bypass graft(s) of the extremities with rest pain, unspecified extremity

Includes

Official

any condition classifiable to I70.71-
chronic limb-threatening ischemia NOS of other type of bypass graft(s) of the extremities
chronic limb-threatening ischemia of other type of bypass graft(s) of the extremities with rest pain
critical limb ischemia NOS of other type of bypass graft(s) of the extremities
critical limb ischemia of other type of bypass graft(s) of the extremities with rest pain

Excludes 1

Official

ICD-10-CM does not list Excludes 1 notes for I70.723 in this effective period.

Code First

Official

ICD-10-CM does not list Code First sequencing instructions for I70.723 in this effective period.

Use Additional

Official

ICD-10-CM does not list Use Additional Code instructions for I70.723 in this effective period.

Code Also

Official

ICD-10-CM does not list Code Also instructions for I70.723 in this effective period.

Buddy Documentation Tip

HCC Buddy guidance

Documented atherosclerotic disease of bypass graft(s) — specify graft type (must be 'other type' bypass graft, not autologous vein or nonautologous biological)

Rest pain explicitly stated — pain at rest in the affected extremity, not just claudication with exertion

Laterality documented: bilateral legs

Type of bypass graft documented (e.g., synthetic, composite, or other non-vein/non-biological graft)

MEAT Support

HCC Buddy guidance

Documented atherosclerotic disease of bypass graft(s) — specify graft type (must be 'other type' bypass graft, not autologous vein or nonautologous biological)

Rest pain explicitly stated — pain at rest in the affected extremity, not just claudication with exertion

Laterality documented: bilateral legs

Type of bypass graft documented (e.g., synthetic, composite, or other non-vein/non-biological graft)

Audit Caution

HCC Buddy guidance

Selecting wrong graft type — 'other type' bypass grafts are specifically for synthetic (e.g., PTFE, Dacron) or composite grafts; autologous vein and nonautologous biological grafts have separate code ranges

Coding rest pain when documentation only describes intermittent claudication (exertional pain) — rest pain is a distinct, more severe clinical finding

Failing to assign additional codes for ulceration or gangrene if also present — rest pain codes include only the rest pain manifestation

Coding bilateral when only one leg has rest pain — bilateral requires documented rest pain in both legs

Common Mistakes

HCC Buddy guidance

I70.711/I70.712/I70.719 — Atherosclerosis of autologous vein bypass graft with rest pain (different graft type — autologous vein vs. other type)

I70.621/I70.622/I70.629 — Atherosclerosis of nonautologous biological bypass graft with rest pain (different graft type — nonautologous biological vs. other type)

I70.311/I70.312/I70.319 — Atherosclerosis of unspecified type bypass graft with rest pain (less specific graft designation)

I70.211/I70.212/I70.219 — Atherosclerosis of native arteries of extremities with rest pain (native artery, not a bypass graft)

Current with CMS: FY2026 ICD-10-CM Apr 1 update (effective Apr 1 – Sep 30, 2026) · CMS-HCC V28, 100% phased in for payment year 2026. FY2027 code set already staged for October 1, 2026. How HCC Buddy stays current →

Is I70.723 an HCC code?

Yes. I70.723 (Atherosclerosis of other type of bypass graft(s) of the extremities with rest pain, bilateral legs) maps to Vascular Disease with Complications under the CMS-HCC V28 risk adjustment model (and Vascular Disease under V24), with a community non-dual aged RAF of 0.455. It is billable for payment year 2026.

Coder answer: I70.723 is billable and maps to V28 HCC 264, Vascular Disease with Complications. Open it in the Code Book for the tabular path, RAF, and MEAT checklist.

Code: I70.723
Description: Atherosclerosis of other type of bypass graft(s) of the extremities with rest pain, bilateral legs
HCC (V28): HCC 264 — Vascular Disease with Complications
RAF: 0.455
Billable: Yes
Payment year: 2026

HCC Category Mapping

V28HCC 264, Vascular Disease with Complications

0.455

V24HCC 108, Vascular Disease

0.288

ESRDHCC 108, Vascular Disease

0.073

Each model's RAF is its CMS base weight for that model's standard population, so weights are not directly comparable across models: CMS-HCC V28 and V24 use Community, Non-Dual, Aged; ESRD uses the dialysis continuing-enrollee model; RxHCC is the Part D continuing-enrollee, non-low-income, aged weight (a larger scale than CMS-HCC). ACA/HHS has no single weight — it varies by metal level. Actual per-patient RAF contribution depends on member segment, interactions, and the model year used by the payer. V28 is the CMS-HCC model phased in over payment years 2024–2026; V24 remains in use during the transition and for historical data.

Work I70.723 in the Code Book — tabular path, V28 RAF, and MEAT checklist →

MEAT Criteria for I70.723

For I70.723 to count as a valid HCC diagnosis in a given encounter, the provider's documentation must show MEAT: Monitor, Evaluate, Assess, or Treat. A diagnosis from a prior year does not carry forward automatically, it has to be re-documented and supported each calendar year.

MMonitor: signs, symptoms, disease progression, or lab trending documented in the note
EEvaluate: test results, medication response, or physical findings reviewed by the provider
AAssess: explicit mention in the assessment or plan with acknowledgment of status
TTreat: medication, referral, procedure, therapy, or counseling tied to the diagnosis

Only one of M/E/A/T is required to support the code, but the documentation must be specific enough to show that the provider actually addressed I70.723 during that encounter, not just copy-forwarded from a problem list.

Coder workflow notes

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What This Code Means

I70.723 is the ICD-10-CM diagnosis code for atherosclerosis of other type of bypass graft(s) of the extremities with rest pain, bilateral legs. Hardening and narrowing of bypass grafts in both legs causing pain at rest due to poor blood flow. I70.723 sits in the ICD-10-CM chapter for diseases of the circulatory system (i00-i99), within the section covering diseases of arteries, arterioles and capillaries (i70-i79).

Under the CMS-HCC V28 risk adjustment model, I70.723 maps to Vascular Disease with Complications (HCC 264) with a community, non-dual, aged base RAF weight of 0.455. Under the older CMS-HCC V24 model, I70.723 maps to Vascular Disease (HCC 108) with a community, non-dual, aged base RAF weight of 0.288. V28 is the CMS-HCC risk adjustment model that reached 100% phase-in for payment year 2026, replacing V24 which was used during the PY2024–PY2025 transition.

Use this code only when atherosclerosis with rest pain is documented in both legs. Because I70.723 maps to a payment HCC, the provider's documentation must satisfy MEAT criteria (Monitor, Evaluate, Assess, or Treat) for the encounter to count toward the patient's Medicare Advantage risk adjustment score. When documentation is ambiguous, coders should issue a provider query rather than assume the highest-specificity variant.

HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for I70.723 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.

Coding Tips

•Use this code only when atherosclerosis with rest pain is documented in both legs
•Do not use this code if only one leg is affected; select the appropriate unilateral code instead

Clinical Significance

Atherosclerosis of other type bypass grafts with rest pain (bilateral legs) represents advanced peripheral arterial disease (Fontaine Stage III/Rutherford Category 4) where ischemia is severe enough to cause pain even without exertion. This indicates critical limb ischemia that carries high risk for tissue loss and amputation. Risk adjustment captures this as significant vascular disease reflecting expected resource utilization for vascular surveillance, potential revascularization, and wound prevention.

Documentation Requirements

✓Documented atherosclerotic disease of bypass graft(s) — specify graft type (must be 'other type' bypass graft, not autologous vein or nonautologous biological)
✓Rest pain explicitly stated — pain at rest in the affected extremity, not just claudication with exertion
✓Laterality documented: bilateral legs
✓Type of bypass graft documented (e.g., synthetic, composite, or other non-vein/non-biological graft)
✓Ankle-brachial index (ABI) or other vascular study results supporting diagnosis when available
✓Current treatment plan (e.g., antiplatelet therapy, pain management, vascular surgery consult)

Commonly Confused Codes

•I70.711/I70.712/I70.719: Atherosclerosis of autologous vein bypass graft with rest pain (different graft type: autologous vein vs. other type)
•I70.621/I70.622/I70.629: Atherosclerosis of nonautologous biological bypass graft with rest pain (different graft type: nonautologous biological vs. other type)
•I70.311/I70.312/I70.319: Atherosclerosis of unspecified type bypass graft with rest pain (less specific graft designation)
•I70.211/I70.212/I70.219: Atherosclerosis of native arteries of extremities with rest pain (native artery, not a bypass graft)
•I70.791/I70.792/I70.799: Other atherosclerosis of other type bypass graft without rest pain or ulceration specification