N03
N03 — Chronic nephritic syndrome
Non-billable headerICD-10-CM
N03 is a non-billable header ICD-10-CM code for chronic 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.
- chronic glomerular disease
- chronic glomerulonephritis
- chronic nephritis
Other codes that can never be billed with N03
These codes carry an Excludes1 note pointing at N03. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading N03 alone.
Risk adjustment
N03 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 N03
11 child codes. Green means billable.
- N03.0Chronic nephritic syndrome with minor glomerular abnormality
- N03.1Chronic nephritic syndrome with focal and segmental glomerular lesions
- N03.2Chronic nephritic syndrome with diffuse membranous glomerulonephritis
- N03.3Chronic nephritic syndrome with diffuse mesangial proliferative glomerulonephritis
- N03.4Chronic nephritic syndrome with diffuse endocapillary proliferative glomerulonephritis
- N03.5Chronic nephritic syndrome with diffuse mesangiocapillary glomerulonephritis
- N03.6Chronic nephritic syndrome with dense deposit disease
- N03.7Chronic nephritic syndrome with diffuse crescentic glomerulonephritis
- N03.8Chronic nephritic syndrome with other morphologic changes
- N03.9Chronic nephritic syndrome with unspecified morphologic changes
- N03.AChronic nephritic syndrome with C3 glomerulonephritis
Questions about N03
- Is N03 a billable ICD-10-CM code?
- No. N03 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
- Where does N03 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 N03?
- N03 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.