MCMedicalCodingSoftware
N05.6

N05.6: Unspecified nephritic syndrome with dense deposit disease

Billable / specific codeICD-10-CM

N05.6 is a billable, specific ICD-10-CM code for unspecified nephritic syndrome with dense deposit disease. It is valid for submission on a claim.

Check N05.6 with the rest of the claim: free scrubber

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

  • Unspecified nephritic syndrome with C3 glomerulopathy with dense deposit disease
  • Unspecified nephritic syndrome with membranoproliferative glomerulonephritis, type 2

Excludes1 inherited from the categories above N05.6

A category’s note binds every code beneath it.

Written on N05: Unspecified nephritic syndrome

  • nephropathy NOS with no stated morphological lesion (N28.9)
  • renal disease NOS with no stated morphological lesion (N28.9)
  • tubulo-interstitial nephritis NOS (N12)

Other codes that can never be billed with N05.6

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

  • N00Acute nephritic syndrome
  • N01Rapidly progressive nephritic syndrome
  • N03Chronic nephritic syndrome
  • N05.AUnspecified nephritic syndrome with C3 glomerulonephritis
  • N28.9Disorder of kidney and ureter, unspecified

Risk adjustment

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

Medicare coverage

N05.6 is named in 1 Medicare coverage policy: 1 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.

  • A55336Billing and Coding: Retroperitoneal Ultrasound

Alphabetic index entries that lead here

  • Disease, diseased›dense deposit
  • Glomerulonephritis›dense deposit
  • Glomerulonephritis›membranoproliferative›dense deposit NEC(type 2)
  • Nephritis, nephritic›membranoproliferative›type 2
  • Nephritis, nephritic›with›dense deposit disease
  • Glomerulonephritis›with›C3›glomerulopathy›with dense deposit disease
  • Nephritis, nephritic›with›C3›glomerulopathy›with dense deposit disease

Code history

Unchanged in every release from FY2024 to FY2027.

Other codes under N05

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.