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R93.421

R93.421: Abnormal radiologic findings on diagnostic imaging of right kidney

Billable / specific codeICD-10-CMright

R93.421 is a billable, specific ICD-10-CM code for abnormal radiologic findings on diagnostic imaging of right kidney. It is valid for submission on a claim.

Check R93.421 with the rest of the claim: free scrubber

Excludes2 inherited from the categories above R93.421

Not part of this code, but both may be coded when both are present.

Written on R93.4: Abnormal findings on diagnostic imaging of urinary organs

  • hypertrophy of kidney (N28.81)

Risk adjustment

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

Medicare coverage

R93.421 is named in 5 Medicare coverage policies: 5 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
  • A56580Billing and Coding: Computerized Axial Tomography (CT), Thorax
  • A56775Billing and Coding: Magnetic Resonance Angiography

Code history

Unchanged in every release from FY2024 to FY2027.

Other codes under R93.42

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.