MCMedicalCodingSoftware
N03.9

N03.9: Chronic nephritic syndrome with unspecified morphologic changes

Billable / specific codeICD-10-CM

N03.9 is a billable, specific ICD-10-CM code for chronic nephritic syndrome with unspecified morphologic changes. It is valid for submission on a claim.

Check N03.9 with the rest of the claim: free scrubber

Excludes1 inherited from the categories above N03.9

A category’s note binds every code beneath it.

Written on N03: Chronic nephritic syndrome

  • chronic tubulo-interstitial nephritis (N11.-)
  • diffuse sclerosing glomerulonephritis (N05.8-)
  • nephritic syndrome NOS (N05.-)

Risk adjustment

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

Medicare coverage

N03.9 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
  • A56767Billing and Coding: Heavy Metal Testing

Alphabetic index entries that lead here

  • Glomerulonephritis›chronic
  • Glomerulonephritis›latent or quiescent
  • Nephritis, nephritic›atrophic
  • Nephritis, nephritic›chronic
  • Small›white kidney
  • White›kidney, small
  • Glomerulonephritis›poststreptococcal NEC›chronic
  • Nephritis, nephritic›poststreptococcal›chronic
  • Syndrome›nephritic›chronic

Code history

Unchanged in every release from FY2024 to FY2027.

Other codes under N03

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.