I70.21 ICD-10-CA code: Atherosclerosis of arteries of extremities with gangrene
I70.21 is the ICD-10-CA code for “Atherosclerosis of arteries of extremities with gangrene” in CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026.
Official description
I70.21Atherosclerosis of arteries of extremities with gangrene
Short description: Atheroscler of art of extrem with gangr
ICD-10-CA · Canada · Also written I7021
Index terms
Entries in CIHI’s alphabetical index that lead to I70.21. Searching the index by the condition the note names is how coders reach this code.
- Calcification, Mönckeberg's without gangrene (NOS), with gangrene
- Sclerosis, sclerotic, Mönckeberg's without gangrene (NOS), with gangrene
- Gangrene, gangrenous (dry) (moist) (skin) (ulcer), senile (atherosclerotic)
- Degeneration, degenerative, Mönckeberg's without gangrene (NOS), with gangrene
- Sclerosis, sclerotic, peripheral arteries without gangrene (NOS), with gangrene
- Gangrene, gangrenous (dry) (moist) (skin) (ulcer), arteriosclerotic (general) (senile)
- Mönckeberg's arteriosclerosis, degeneration, disease or sclerosis without gangrene (NOS), with gangrene
- Degeneration, degenerative, artery, arterial (atheromatous) (calcareous), medial without gangrene (NOS), with gangrene
- Arteriosclerosis, arteriosclerotic (diffuse) (disease) (general) (obliterans) (senile) (with calcification), medial without gangrene (NOS), with gangrene
- Sclerosis, sclerotic, peripheral arteries without gangrene (NOS), with grafts (autologous) (bypass) (nonautologous) without gangrene (NOS), with gangrene
- Arteriosclerosis, arteriosclerotic (diffuse) (disease) (general) (obliterans) (senile) (with calcification), extremities without gangrene (NOS), with gangrene
- Arteriosclerosis, arteriosclerotic (diffuse) (disease) (general) (obliterans) (senile) (with calcification), Mönckeberg's without gangrene (NOS), with gangrene
- Arteriosclerosis, arteriosclerotic (diffuse) (disease) (general) (obliterans) (senile) (with calcification), arteries of extremities without gangrene (NOS), with gangrene
- Arteriosclerosis, arteriosclerotic (diffuse) (disease) (general) (obliterans) (senile) (with calcification), peripheral (of extremities) without gangrene (NOS), with gangrene
- Arteriosclerosis, arteriosclerotic (diffuse) (disease) (general) (obliterans) (senile) (with calcification), bypass graft, arteries of extremities without gangrene (NOS), with gangrene
- Arteriosclerosis, arteriosclerotic (diffuse) (disease) (general) (obliterans) (senile) (with calcification), extremities without gangrene (NOS), with grafts (autologous) (nonautologous) (bypass) without gangrene (NOS), with gangrene
- Arteriosclerosis, arteriosclerotic (diffuse) (disease) (general) (obliterans) (senile) (with calcification), arteries of extremities without gangrene (NOS), with grafts (autologous) (nonautologous) (bypass) without gangrene (NOS), with gangrene
- Arteriosclerosis, arteriosclerotic (diffuse) (disease) (general) (obliterans) (senile) (with calcification), peripheral (of extremities) without gangrene (NOS), with grafts (autologous) (nonautologous) (bypass) without gangrene (NOS), with gangrene
Notes for I70.21
As CIHI prints them, with any note I70.21 takes from the headings above it.
Includes
- Atherosclerotic gangrene
- Atherosclerosis of (autologous) (bypass) (nonautologous) grafts of arteries of extremitiesMönckeberg's (medial) sclerosisFrom I70.2 Atherosclerosis of arteries of extremities
- Arteriolosclerosisarteriosclerosisarteriosclerotic vascular diseaseatheromadegeneration:• arterial• arteriovascular• vascularendarteritis deformans or obliteranssenile:• arteritis• endarteritisFrom I70 Atherosclerosis
Excludes
Conditions classified elsewhere.
- Cerebral (I67.2)coronary (I25.1)mesenteric (K55.1)pulmonary (I27.0)From I70 Atherosclerosis
- Certain:• conditions originating in the perinatal period (P00-P96)• infectious and parasitic diseases (A00-B99)complications of pregnancy, childbirth and the puerperium (O00-O99)congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)endocrine, nutritional and metabolic diseases (E00-E90)injury, poisoning and certain other consequences of external causes (S00-T98)neoplasms (C00-D48)symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)systemic connective tissue disorders (M30-M36)transient cerebral ischaemic attacks and related syndromes (G45.-)From Chapter 9: Diseases of the circulatory system (I00-I99)
Where I70.21 sits
- 1ChapterChapter 9: Diseases of the circulatory system (I00-I99)
- 2Block I70-I79Diseases of arteries, arterioles and capillaries
- 3Category I70Atherosclerosis
- 4Subcategory I70.2Atherosclerosis of arteries of extremities
- 5Valid code I70.21Atherosclerosis of arteries of extremities with gangrene
Source and release
- Data release
- ICD-10-CA · FY 2026–2027
- Effective date
- Apr 1, 2026
- Publisher
- CIHI
This page is built from the ICD-10-CA catalog that Vero Codes reads when it suggests codes: Canadian Institute for Health Information’s FY 2026–2027 release, imported from the publisher’s file and checked against it. The description, notes and structured data come from the same record.
Frequently asked questions
What does ICD-10-CA code I70.21 mean?
I70.21 is the ICD-10-CA code for “Atherosclerosis of arteries of extremities with gangrene” in CIHI’s ICD-10-CA FY 2026–2027 release.
Where is I70.21 in ICD-10-CA?
I70.21 sits under I70.2 Atherosclerosis of arteries of extremities, within I70 Atherosclerosis, within I70-I79 Diseases of arteries, arterioles and capillaries, within Chapter 9: Diseases of the circulatory system (I00-I99).
What coding notes apply to I70.21?
ICD-10-CA lists Includes, Excludes notes for I70.21, including those from the headings it sits under. They are listed on this page with where each one comes from.
Which ICD-10-CA release does this page use?
It uses CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026 to Mar 31, 2027. It is a reference: confirm the code against the current list and the payer’s rules before you submit it.