N23 ICD-10-CA code: Unspecified renal colic
N23 is the ICD-10-CA code for “Unspecified renal colic” in CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026.
Official description
N23Unspecified renal colic
ICD-10-CA · Canada
Index terms
Entries in CIHI’s alphabetical index that lead to N23. Searching the index by the condition the note names is how coders reach this code.
- Nephralgia
- Ureteralgia
- Pain, pains, kidney
- Pain, pains, ureter
- Colic (recurrent), renal
- Colic (recurrent), kidney
- Colic (recurrent), ureter
- Colic (recurrent), nephritic
Notes for N23
As CIHI prints them, with any note N23 takes from the headings above it.
Excludes
Conditions classified elsewhere.
- Certain conditions originating in the perinatal period (P00-P96)certain 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 14: Diseases of the genitourinary system (N00-N99)
Where N23 sits
- 1ChapterChapter 14: Diseases of the genitourinary system (N00-N99)
- 2Block N20-N23Urolithiasis
- 3Valid code N23Unspecified renal colic
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 N23 mean?
N23 is the ICD-10-CA code for “Unspecified renal colic” in CIHI’s ICD-10-CA FY 2026–2027 release.
Where is N23 in ICD-10-CA?
N23 sits under N20-N23 Urolithiasis, within Chapter 14: Diseases of the genitourinary system (N00-N99).
What coding notes apply to N23?
ICD-10-CA lists Excludes notes for N23, 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.