MCMedicalCodingSoftware
N23

N23: Unspecified renal colic

Billable / specific codeICD-10-CM

N23 is a billable, specific ICD-10-CM code for unspecified renal colic. It is valid for submission on a claim.

Check N23 with the rest of the claim: free scrubber

Other codes that can never be billed with N23

Their own Excludes1 notes name this code, so the conflict is not listed above.

  • R10Abdominal and pelvic pain
  • R52Pain, unspecified

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Medicare coverage

N23 is named in 2 Medicare coverage policies: 2 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.

  • A55336Billing and Coding: Retroperitoneal Ultrasound
  • A56421Billing and Coding: CT of the Abdomen and Pelvis

Alphabetic index entries that lead here

  • Nephralgia
  • Ureteralgia
  • Colic›kidney
  • Colic›nephritic
  • Colic›renal
  • Colic›ureter
  • Pain›kidney
  • Pain›ureter
  • Pain›urinary(organ) (system)

Code history

Unchanged in every release from FY2024 to FY2027.

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.