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I70.218 ICD-10-CM Code: Atherosclerosis of native arteries of extremities with intermittent claudication, other extremity

Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.

Coding at a Glance

Tabular directives
10 inclusion terms · 9 Excludes2 · 7 use-additional codes
Risk adjustment
CMS-HCC V22 category 108

Inpatient Payment Groups (MS-DRG)

Potential MS-DRG participation — not a DRG assignment.

MS-DRGs this diagnosis helps define, as principal or secondary, per the CMS ICD-10-CM/PCS MS-DRG Definitions Manual v43, Appendix B.

  • MS-DRG 299 — PERIPHERAL VASCULAR DISORDERS WITH MCC (MDC 05)
  • MS-DRG 300 — PERIPHERAL VASCULAR DISORDERS WITH CC (MDC 05)
  • MS-DRG 301 — PERIPHERAL VASCULAR DISORDERS WITHOUT CC/MCC (MDC 05)

A diagnosis appearing in a group's logic does not by itself determine the DRG assigned to a stay; the grouper uses the full claim.

Coding instructions

Official Tabular Instructional Notes: the inclusion, exclusion and sequencing notes published for I70.218 in the official ICD-10-CM tabular list, quoted as published.

Notes without a marker are published on I70.218 itself; “inherited from” names the category or block whose note applies here.

Includes

Conditions the official ICD-10-CM tabular list includes under this code.

  • arteriolosclerosis
  • arterial degeneration
  • arteriosclerosis
  • arteriosclerotic vascular disease
  • arteriovascular degeneration
  • atheroma
  • endarteritis deformans or obliterans
  • senile arteritis
  • senile endarteritis
  • vascular degeneration

Source: inherited from I70

Excludes2 — Not Included Here

Conditions not covered by this code, but which may be reported alongside it when both are present.

Use Additional Code

Supplementary codes the tabular list directs you to add.

  • Use additional code, if applicable, to identify chronic total occlusion of artery of extremity (I70.92) inherited from I70.2
  • Use additional code to identify:
  • exposure to environmental tobacco smoke (Z77.22) inherited from I70
  • history of tobacco dependence (Z87.891) inherited from I70
  • occupational exposure to environmental tobacco smoke (Z57.31) inherited from I70
  • tobacco dependence (F17.-) inherited from I70
  • tobacco use (Z72.0) inherited from I70

Coder workflow for I70.218

MedCoder structured workflow — derived from this code’s own official record

Before you code I70.218

  1. I70.218’s title joins a condition with an associated condition or complication. Confirm each component is documented. Where the classification presumes the link through the “with” convention, only a provider statement that the conditions are unrelated defeats it. A combination code is assigned only when it fully identifies the documented conditions; a required second code for the stage, type or manifestation is still reported when the notes ask for it (Guidelines I.B.9, I.A.15).

    Guide: Combination codes →

Documentation check

The provider’s diagnostic statement
Codes are assigned from the provider’s documented diagnosis, not from clinical criteria, test values or a medication list (Guidelines I.A.19).
The associated condition or complication
Whether the associated condition the title names is documented; the “with” convention presumes some links, and a provider statement that the conditions are unrelated defeats it (Guidelines I.A.15).
The conditions the Use Additional Code note names
Reported with this code when documented; a conditional instruction (“if applicable”, “if known”) applies only when the record supports it.

Official instructions as workflow

  • Excludes2 — not part of I70.218(9 notes)

    Coding workflow: The conditions named in this note are not included in I70.218. When the record documents both, both may be reported; the note is a boundary, not a prohibition.

    CompareI25.1, I75, I67.2, K55.1, I27.0

    See the official tabular notes · Guidelines I.A.12.b

  • Use Additional Code — after identifying I70.218(7 notes)

    Coding workflow: Check whether the documentation supports the additional code(s) the note names, and report them with I70.218 when it does. Where the instruction is conditional (“if applicable”, “if known”), it applies only when the record documents the condition.

    ReviewI70.92, Z77.22, Z87.891, Z57.31, F17, Z72.0

    See the official tabular notes · Guidelines I.A.13

Coding decision scenarios

Pattern scenarios for this code’s structure — decision rules, not clinical cases

Documentation: Only one of the components this code’s title joins is documented.

Coding question: Is I70.218 supported?

Path: Review the code for the documented component on its own.

Reason: A combination code is assigned only when it fully identifies the documented conditions; otherwise the documented component takes its own code (Guidelines I.B.9).

Documentation: A condition the Use Additional Code note names is documented.

Coding question: Is a second code reported with I70.218?

Path: Review the Use Additional Code note and the code it names.

Reason: The additional code is reported when the record documents the condition; a conditional instruction applies only when its condition is met (Guidelines I.A.13).

ReviewI70.92, Z77.22, Z87.891, Z57.31, F17, Z72.0

Every row is derived from this code’s own record — its title, tabular notes, 7th-character family and same-category siblings — with fixed MedCoder wording; nothing is inferred about a patient. The official notes and guideline text are in the sections each row links to, and they control.

Code Overview

Atherosclerosis of native arteries of extremities with intermittent claudication, other extremity is a billable ICD-10-CM diagnosis code (I70.218).

MedCoder summary Summary composed by MedCoder from this code's official ICD-10-CM record. The tabular instructional notes themselves appear verbatim below.

Indexed Clinical Terms (1)

Official source data — entries quoted as published, in the Index’s own lookup phrasing

Clinical term phrases from the official ICD-10-CM Index to Diseases and Injuries that map to this code. These are alphabetic-index entries shown as the Index writes them — lookup phrasing, not necessarily the wording of a final diagnosis.

Verify Before Coding

  • Age-restricted: the Medicare Code Editor lists this as an adult (age 15-124) diagnosis; other ages are presumed incorrect.

From the code registry, the Medicare Code Editor, and the MS-DRG Definitions Manual. Check it against a full claim in Claim Check.

Relationships & Classification

MedCoder structured relationships — computed from published CMS and AHRQ datasets

Other codes that name I70.218 or its code family, from the CMS ICD-10-CM tabular instructional notes. Tabular-note edges are stored at the code family level that carries each note.

Referenced by 2 Excludes1 notes: I73.9 — Peripheral vascular disease, unspecified (via I70.2.-), I77.6 — Arteritis, unspecified (via I70.-).

These codes’ tabular lists mark this diagnosis as mutually exclusive — not reported together unless the conditions are documented as unrelated.

Referenced by 1 Code First instruction: I70.92 — Chronic total occlusion of artery of the extremities (via I70.2.-).

Each of these codes carries a Code First note naming this condition — when that code is reported, THIS code is sequenced first, ahead of it.

MS-DRG Grouper Relationships (FY2026)

Potential MS-DRG participation — not a DRG assignment.

Not on the CMS CC/MCC list — as a secondary diagnosis this code does not change MS-DRG severity.

Named in the grouper logic of 3 MS-DRGs: DRG 299 (MDC 05), DRG 300 (MDC 05), DRG 301 (MDC 05).

From the CMS MS-DRG Definitions Manual (Appendices B and C). Actual DRG assignment depends on the complete claim.

Clinical classification (AHRQ CCSR):CIR026 — Peripheral and visceral vascular disease (default).

Clinical Classifications Software Refined (CCSR) for ICD-10-CM Diagnoses. Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality.

Related Codes

Same clinical category (CCSR)

AHRQ's Clinical Classifications Software groups these diagnoses under the same clinical category (Peripheral and visceral vascular disease).

I70.0 — Atherosclerosis of aorta, I70.1 — Atherosclerosis of renal artery, I70.201 — Unspecified atherosclerosis of native arteries of extremities, right leg, I70.202 — Unspecified atherosclerosis of native arteries of extremities, left leg, I70.203 — Unspecified atherosclerosis of native arteries of extremities, bilateral legs, I70.208 — Unspecified atherosclerosis of native arteries of extremities, other extremity, I70.209 — Unspecified atherosclerosis of native arteries of extremities, unspecified extremity, I70.211 — Atherosclerosis of native arteries of extremities with intermittent claudication, right leg, I70.212 — Atherosclerosis of native arteries of extremities with intermittent claudication, left leg, I70.213 — Atherosclerosis of native arteries of extremities with intermittent claudication, bilateral legs, I70.219 — Atherosclerosis of native arteries of extremities with intermittent claudication, unspecified extremity, I70.221 — Atherosclerosis of native arteries of extremities with rest pain, right leg, I70.222 — Atherosclerosis of native arteries of extremities with rest pain, left leg, I70.223 — Atherosclerosis of native arteries of extremities with rest pain, bilateral legs, I70.228 — Atherosclerosis of native arteries of extremities with rest pain, other extremity, I70.229 — Atherosclerosis of native arteries of extremities with rest pain, unspecified extremity, I70.231 — Atherosclerosis of native arteries of right leg with ulceration of thigh, I70.232 — Atherosclerosis of native arteries of right leg with ulceration of calf, I70.233 — Atherosclerosis of native arteries of right leg with ulceration of ankle, I70.234 — Atherosclerosis of native arteries of right leg with ulceration of heel and midfoot, +255 more

Same Index main term, other category

The ICD-10-CM Index to Diseases and Injuries files this code under the main term “Arteriosclerosis, arteriosclerotic”; these codes share that main term but sit in a different category of the Tabular List.

I25.760 — Atherosclerosis of bypass graft of coronary artery of transplanted heart with unstable angina (coronary, transplanted heart, bypass graft, with, angina pectoris, unstable), I25.761 — Atherosclerosis of bypass graft of coronary artery of transplanted heart with angina pectoris with documented spasm (coronary, transplanted heart, bypass graft, with, angina pectoris, with documented spasm), I25.762 — Atherosclerosis of bypass graft of coronary artery of transplanted heart with refractory angina pectoris (coronary, transplanted heart, bypass graft, with, angina pectoris, refractory), I25.768 — Atherosclerosis of bypass graft of coronary artery of transplanted heart with other forms of angina pectoris (coronary, transplanted heart, bypass graft, with, angina pectoris, specified type), I25.769 — Atherosclerosis of bypass graft of coronary artery of transplanted heart with unspecified angina pectoris (coronary, transplanted heart, bypass graft, with, angina pectoris), I25.790 — Atherosclerosis of other coronary artery bypass graft(s) with unstable angina pectoris (coronary, bypass graft, specified type NEC, with, angina pectoris, unstable), I25.791 — Atherosclerosis of other coronary artery bypass graft(s) with angina pectoris with documented spasm (coronary, bypass graft, specified type NEC, with, angina pectoris, with documented spasm), I25.792 — Atherosclerosis of other coronary artery bypass graft(s) with refractory angina pectoris (coronary, bypass graft, specified type NEC, with, angina pectoris, refractory), I25.798 — Atherosclerosis of other coronary artery bypass graft(s) with other forms of angina pectoris (coronary, bypass graft, specified type NEC, with, angina pectoris, specified type), I25.799 — Atherosclerosis of other coronary artery bypass graft(s) with unspecified angina pectoris (coronary, bypass graft, specified type NEC, with, angina pectoris), I25.810 — Atherosclerosis of coronary artery bypass graft(s) without angina pectoris (coronary, bypass graft), I25.811 — Atherosclerosis of native coronary artery of transplanted heart without angina pectoris (coronary, transplanted heart), I25.812 — Atherosclerosis of bypass graft of coronary artery of transplanted heart without angina pectoris (coronary, transplanted heart, bypass graft), I25.83 — Coronary atherosclerosis due to lipid rich plaque (coronary, due to, lipid rich plaque), I25.84 — Coronary atherosclerosis due to calcified coronary lesion (coronary, due to, calcified coronary lesion), I27.0 — Primary pulmonary hypertension (pulmonary), I51.4 — Myocarditis, unspecified (myocarditis), I65.2 — Occlusion and stenosis of carotid artery (carotid), I67.2 — Cerebral atherosclerosis (brain), K55.1 — Chronic vascular disorders of intestine (mesenteric), +32 more

Lab tests where this diagnosis supports Medicare coverage (NCD)

Medicare's National Coverage Determination (NCD) program lists this diagnosis as medical justification for these lab tests.

Lipid Panel, Prothrombin Time Test and INR (PT/INR)

Contextual Map

Every relationship of I70.218 in one view: hierarchy, official tabular instructions in both directions, clinical classification, risk adjustment, MS-DRG participation, index terms and change history — each edge carrying the CMS source it derives from.

Run I70.218 with these 3 related codes in Claim Check

Hierarchy

Referenced by Excludes1 notes

Referenced by Code First instructions

Clinical classification (CCSR)

MS-DRG Grouper

MDC crossing

  • MDC 05 — Diseases and Disorders of the Circulatory System[MDC crossing]: “Diseases and Disorders of the Circulatory System — the grouper's crossing between diagnoses and procedures: a principal diagnosis sets the MDC, and same-MDC procedures move the stay to its surgical DRGs. 17,209 same-MDC procedures group here; browse them on the MDC page.”— CMS MS-DRG Definitions Manual · FY2026

Index entries

  • Arteriosclerosis, arteriosclerotic (diffuse) (obliterans) (of) (senile) (with calcification), extremities (native arteries), specified site NEC, with, intermittent claudication[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026

Nearest codes (40)

Change history

  • FY2016 — In the code set at ICD-10-CM adoption [Change history]— CMS release files (code change ledger) · icd10cm-fy2016

Sources for this page

Codes, titles, notes, index terms and mappings on this page are transcribed from the datasets below. Relationships MedCoder computed and text MedCoder wrote are labelled where they appear.

Code, title, tabular notes and index terms Official source data
CMS/CDC ICD-10-CM FY2026 tabular list, index and tables, effective October 1, 2025 Release, file and checksum · Publisher’s page
Claim edits Official source data
CMS Definitions of Medicare Code Edits — v43.1 (April 2026) Release, file and checksum · Publisher’s page
Inpatient payment groups Official source data
CMS MS-DRG Definitions Manual (incl. Appendix B diagnosis index, Appendix C CC/MCC list, Appendix E procedure index) and IPPS Final Rule tables — v43 Release, file and checksum · Publisher’s page
Change history and date-of-service validity Official source data
CMS ICD-10-CM release addenda, ingested release by release into the change ledger Release, file and checksum · Publisher’s page
Comparisons, relationships and the contextual map MedCoder structured relationship
Computed by MedCoder from the tabular notes and tables above; every derived relationship is marked as derived where it appears
Summary and FAQ answers MedCoder explanation
Written by MedCoder to explain the sources above: drafted with AI assistance, checked by a person against the release files, and labelled as MedCoder text where it appears. Not official text.

Labels on this page: Official source data · MedCoder structured relationship · MedCoder explanation. How to read the labels · All data sources and release dates

Change history

  • FY2016 — October 1, 2015
    In the code set at ICD-10-CM adoption
    Atherosclerosis of native arteries of extremities with intermittent claudication, other extremity

No changes since FY2016 — additions, deletions, description changes and billable-status changes are tracked through FY2027 (effective October 1, 2026), and none are recorded for this code. Note changes are tracked from FY2027 only.

Nearest Codes in This Family

Official ICD-10-CM classifications closest to I70.218 in its code family, with their registry titles.

View all codes in the I70 family