N05
N05 — Unspecified nephritic syndrome
Non-billable headerICD-10-CM
N05 is a non-billable header ICD-10-CM code for unspecified nephritic syndrome. It cannot be billed on its own: choose one of the more specific child codes below.
Excludes1 — never code together
These conditions cannot occur together. Billing both on the same encounter is a denial.
Includes
Conditions this code covers.
- glomerular disease NOS
- glomerulonephritis NOS
- nephritis NOS
- nephropathy NOS and renal disease NOS with morphological lesion specified in .0-.8
Other codes that can never be billed with N05
These codes carry an Excludes1 note pointing at N05. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading N05 alone.
- N00Acute nephritic syndrome
- N01Rapidly progressive nephritic syndrome
- N03Chronic nephritic syndrome
- N05.5Unspecified nephritic syndrome with diffuse mesangiocapillary glomerulonephritis
- N05.AUnspecified nephritic syndrome with C3 glomerulonephritis
- N26Unspecified contracted kidney
- N28.9Disorder of kidney and ureter, unspecified
Risk adjustment
N05 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.
Code to one of these instead N05
11 child codes. Green means billable.
- N05.0Unspecified nephritic syndrome with minor glomerular abnormality
- N05.1Unspecified nephritic syndrome with focal and segmental glomerular lesions
- N05.2Unspecified nephritic syndrome with diffuse membranous glomerulonephritis
- N05.3Unspecified nephritic syndrome with diffuse mesangial proliferative glomerulonephritis
- N05.4Unspecified nephritic syndrome with diffuse endocapillary proliferative glomerulonephritis
- N05.5Unspecified nephritic syndrome with diffuse mesangiocapillary glomerulonephritis
- N05.6Unspecified nephritic syndrome with dense deposit disease
- N05.7Unspecified nephritic syndrome with diffuse crescentic glomerulonephritis
- N05.8Unspecified nephritic syndrome with other morphologic changes
- N05.9Unspecified nephritic syndrome with unspecified morphologic changes
- N05.AUnspecified nephritic syndrome with C3 glomerulonephritis
Questions about N05
- Is N05 a billable ICD-10-CM code?
- No. N05 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
- Where does N05 sit in the tabular list?
- Diseases of the genitourinary system (N00-N99), in the block Glomerular diseases (N00-N08).
- What cannot be coded together with N05?
- N05 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.