N08 — Glomerular disorders in diseases classified elsewhere
Is N08 billable?
Yes — N08 is billable for FY2027. N08 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. N08 may be submitted for encounters from October 1, 2026 through September 30, 2027.
N08 at a glance
| Code | N08 |
|---|---|
| Description | Glomerular disorders in diseases classified elsewhere |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
What Medicare edits apply to N08?
The Medicare Code Editor screens inpatient claims before they are grouped. These edits name N08 directly.
This code describes a manifestation of an underlying disease. The underlying condition must be sequenced before it, so it can never be the principal or first-listed diagnosis.
Which MS-DRGs does N08 group to?
N08 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
How is N08 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to N08. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Nephritis, nephritic › amyloid (albuminuric) (azotemic) (congenital) (disseminated) (epithelial) (familial) (focal) (granulomatous) (hemorrhagic) (infantile) (nonsuppurative, excretory) (uremic)
- Nephropathy › sickle-cell
- Disorder › glomerular › amyloidosis (of)
- Disorder › glomerular › cryoglobulinemia (of)
- Disorder › glomerular › disseminated intravascular coagulation (of)
- Disorder › glomerular › Fabry's disease (of)
- Disorder › glomerular › familial lecithin cholesterol acyltransferase deficiency (of)
- Disorder › glomerular › Henochpurpura (of)
- Disorder › glomerular › microscopic polyangiitis (of)
- Disorder › glomerular › multiple myeloma (of)
- Disorder › glomerular › schistosomiasis (of)
- Disorder › glomerular › sepsis NEC (of)
Excludes1 — never code together
The conditions below can never be reported together with N08 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- glomerulonephritis, nephritis and nephropathy (in):
- antiglomerular basement membrane disease (M31.0)
- diabetes (E08-E13 with .21)
- gonococcal (A54.21)
- Goodpasture's syndrome (M31.0)
- hemolytic-uremic syndrome (D59.3-)
- lupus (M32.14)
- mumps (B26.83)
- syphilis (A52.75)
- systemic lupus erythematosus (M32.14)
- Wegener's granulomatosis (M31.31)
- pyelonephritis in diseases classified elsewhere (N16)
- renal tubulo-interstitial disorders classified elsewhere (N16)
Code first
The underlying condition below must be sequenced before N08. N08 describes a manifestation and cannot be the principal or first-listed diagnosis.
Inclusion terms
Alternative wording in documentation that is classified to N08.
- Glomerulonephritis
- Nephritis
- Nephropathy
Excludes1 — never code together — inherited from N00-N08
The conditions below can never be reported together with N08 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.-)
Excludes2 — not included here — inherited from Chapter 14
The conditions below are not part of N08, but a patient may have both at the same time. When documentation supports it, N08 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 N08 is sequenced first depends on the reason for the encounter.
- any associated kidney failure (N17-N19).
How long has N08 existed?
N08 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
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 N08?
ICD-10-CM declares these codes mutually exclusive with N08 — exactly one of each pair can be correct for a given encounter.