K37 ICD-10-CA code: Unspecified appendicitis
K37 is the ICD-10-CA code for “Unspecified appendicitis” in CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026.
Official description
K37Unspecified appendicitis
ICD-10-CA · Canada
Index terms
Entries in CIHI’s alphabetical index that lead to K37. Searching the index by the condition the note names is how coders reach this code.
- Appendicitis
- Periappendicitis
- Appendicitis, retrocecal
- Appendicitis, pneumococcal
- Inflammation, inflamed, inflammatory (with exudation), appendix
Notes for K37
As CIHI prints them, with any note K37 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 K37 sits
- 1ChapterChapter 11: Diseases of the digestive system (K00-K93)
- 2Block K35-K38Diseases of appendix
- 3Valid code K37Unspecified 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
What does ICD-10-CA code K37 mean?
K37 is the ICD-10-CA code for “Unspecified appendicitis” in CIHI’s ICD-10-CA FY 2026–2027 release.
Where is K37 in ICD-10-CA?
K37 sits under K35-K38 Diseases of appendix, within Chapter 11: Diseases of the digestive system (K00-K93).
What coding notes apply to K37?
ICD-10-CA lists Excludes notes for K37, 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.