R96 ICD-10-CA category: Other sudden death, cause unknown
R96 isn’t a code on its own. Choose one of the 2 codes beneath it, the one the documentation supports.
Official description
R96Other sudden death, cause unknown
ICD-10-CA · Canada
Codes in R96
R96 isn’t a code on its own. Open the code that matches what the note documents.
Notes for R96
As CIHI prints them, with any note R96 takes from the headings above it.
Excludes
Conditions classified elsewhere.
- Sudden:• cardiac death, so described (I46.1)• infant death syndrome (R95)
- Fetal death of unspecified cause (P95)obstetric death NOS (O95)From R95-R99 Ill-defined and unknown causes of mortality
- Abnormal findings on antenatal screening of mother (O28.-)certain conditions originating in the perinatal period (P00-P96)From Chapter 18: Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)
Note
- Signs and symptoms that point rather definitely to a given diagnosis have been assigned to a category in other chapters of the classification. In general, categories in this chapter include the less well-defined conditions and symptoms that, without the necessary study of the case to establish a final diagnosis, point perhaps equally to two or more diseases or to two or more systems of the body. Practically all categories in the chapter could be designated "not otherwise specified", "unknown etiology" or "transient". The Alphabetical Index should be consulted to determine which symptoms and signs are to be allocated here and which to other chapters. The residual subcategories, numbered .8, are generally provided for other relevant symptoms that cannot be allocated elsewhere in the classification.The conditions and signs or symptoms included in categories (R00-R99) consist of:(a) cases for which no more specific diagnosis can be made even after all the facts bearing on the case have been investigated;(b) signs or symptoms existing at the time of initial encounter that proved to be transient and whose causes could not be determined;(c) provisional diagnoses in a patient who failed to return for further investigation or care;(d) cases referred elsewhere for investigation or treatment before the diagnosis was made;(e) cases in which a more precise diagnosis was not available for any other reason;(f) certain symptoms, for which supplementary information is provided, that represent important problems in medical care in their own right.From Chapter 18: Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)
Where R96 sits
- 1ChapterChapter 18: Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)
- 2Block R95-R99Ill-defined and unknown causes of mortality
- 3Category R96Other sudden death, cause unknown
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 R96 a valid ICD-10-CA code?
No. R96 (Other sudden death, cause unknown) is a category heading in CIHI’s ICD-10-CA FY 2026–2027 release. It holds 2 codes; record the one the documentation supports.
Where is R96 in ICD-10-CA?
R96 sits under R95-R99 Ill-defined and unknown causes of mortality, within Chapter 18: Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99).
What coding notes apply to R96?
ICD-10-CA lists Excludes, Note notes for R96, 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.