I77.5 ICD-10-CA code: Necrosis of artery
I77.5 is the ICD-10-CA code for “Necrosis of artery” in CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026.
Official description
I77.5Necrosis of artery
ICD-10-CA · Canada · Also written I775
Index terms
Entries in CIHI’s alphabetical index that lead to I77.5. Searching the index by the condition the note names is how coders reach this code.
- Necrosis, necrotic (ischemic), artery
Notes for I77.5
As CIHI prints them, with any note I77.5 takes from the headings above it.
Excludes
Conditions classified elsewhere.
- Collagen (vascular) diseases (M30-M36)hypersensitivity angiitis (M31.0)pulmonary artery (I28.-)From I77 Other disorders of arteries and arterioles
- 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 I77.5 sits
- 1ChapterChapter 9: Diseases of the circulatory system (I00-I99)
- 2Block I70-I79Diseases of arteries, arterioles and capillaries
- 3Category I77Other disorders of arteries and arterioles
- 4Valid code I77.5Necrosis of artery
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 I77.5 mean?
I77.5 is the ICD-10-CA code for “Necrosis of artery” in CIHI’s ICD-10-CA FY 2026–2027 release.
Where is I77.5 in ICD-10-CA?
I77.5 sits under I77 Other disorders of arteries and arterioles, within I70-I79 Diseases of arteries, arterioles and capillaries, within Chapter 9: Diseases of the circulatory system (I00-I99).
What coding notes apply to I77.5?
ICD-10-CA lists Excludes notes for I77.5, 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.