ICDcodes.org
FY2027

N00.A — Acute nephritic syndrome with C3 glomerulonephritis

BillableMCC

Is N00.A billable?

Yes — N00.A is billable for FY2027. N00.A is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. N00.A may be submitted for encounters from October 1, 2026 through September 30, 2027.

N00.A at a glance

CodeN00.A
DescriptionAcute nephritic syndrome with C3 glomerulonephritis
BillableYes
Code setICD-10-CM FY2027
Valid for encountersOctober 1, 2026 – September 30, 2027

Which MS-DRGs does N00.A group to?

N00.A sits in MDC 11 and helps define the logic of 3 MS-DRGs (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.

  • 698Other Kidney and Urinary Tract Diagnoses with MCCmedical
  • 699Other Kidney and Urinary Tract Diagnoses with CCmedical
  • 700Other Kidney and Urinary Tract Diagnoses without CC/MCCmedical

As a secondary diagnosis, N00.A is a major complication or comorbidity (MCC), which can move a stay into a higher-paying DRG.

How is N00.A listed in the Alphabetic Index?

These are the routes through the Alphabetic Index that lead to N00.A. They show the wording a clinician may have documented, which often differs from the Tabular description.

  • Nephritis, nephritic › acute › with › C3 › glomerulonephritis (albuminuric) (azotemic) (congenital) (disseminated) (epithelial) (familial) (focal) (granulomatous) (hemorrhagic) (infantile) (nonsuppurative, excretory) (uremic)
  • Nephritis, nephritic › acute › with › C3 › glomerulopathy (albuminuric) (azotemic) (congenital) (disseminated) (epithelial) (familial) (focal) (granulomatous) (hemorrhagic) (infantile) (nonsuppurative, excretory) (uremic)

Excludes1 — never code together

The conditions below can never be reported together with N00.A on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.

  • Acute nephritic syndrome (with C3 glomerulopathy) with dense deposit disease (N00.6)

Inclusion terms

Alternative wording in documentation that is classified to N00.A.

  • Acute nephritic syndrome with C3 glomerulopathy, NOS

Excludes1 — never code together — inherited from N00-N08

The conditions below can never be reported together with N00.A on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.

  • hypertensive chronic kidney disease (I12.-)

Excludes1 — never code together — inherited from N00

The conditions below can never be reported together with N00.A on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.

  • acute tubulo-interstitial nephritis (N10)
  • nephritic syndrome NOS (N05.-)

Excludes2 — not included here — inherited from Chapter 14

The conditions below are not part of N00.A, but a patient may have both at the same time. When documentation supports it, N00.A and the excluded code may both be reported.

  • certain conditions originating in the perinatal period (P04-P96)
  • certain infectious and parasitic diseases (A00-B99)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)
  • congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
  • endocrine, nutritional and metabolic diseases (E00-E88)
  • injury, poisoning and certain other consequences of external causes (S00-T88)
  • neoplasms (C00-D49)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)

Code also — inherited from N00-N08

Two codes may be needed to describe the condition fully. Whether N00.A is sequenced first depends on the reason for the encounter.

  • any associated kidney failure (N17-N19).

How long has N00.A existed?

N00.A first appears in FY2021 (FY2020 is not available, so it may have appeared then).

Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.

Which codes are confused with N00.A?

ICD-10-CM declares these codes mutually exclusive with N00.A — exactly one of each pair can be correct for a given encounter.

Which conditions are coded to N00.A?

What other codes are in the N00 family? (11)