K35 ICD-10-CA category: Acute appendicitis
K35 isn’t a code on its own. Choose one of the 3 codes beneath it, the one the documentation supports.
Official description
K35Acute appendicitis
ICD-10-CA · Canada
Codes in K35
K35 isn’t a code on its own. Open the code that matches what the note documents.
Notes for K35
As CIHI prints them, with any note K35 takes from the headings above it.
Excludes
Conditions classified elsewhere.
- 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)From Chapter 11: Diseases of the digestive system (K00-K93)
Where K35 sits
- 1ChapterChapter 11: Diseases of the digestive system (K00-K93)
- 2Block K35-K38Diseases of appendix
- 3Category K35Acute appendicitis
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
Is K35 a valid ICD-10-CA code?
No. K35 (Acute appendicitis) is a category heading in CIHI’s ICD-10-CA FY 2026–2027 release. It holds 3 codes; record the one the documentation supports.
Where is K35 in ICD-10-CA?
K35 sits under K35-K38 Diseases of appendix, within Chapter 11: Diseases of the digestive system (K00-K93).
What coding notes apply to K35?
ICD-10-CA lists Excludes notes for K35, 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.