N05.2 — Unspecified nephritic syndrome with diffuse membranous glomerulonephritis
N05.2 is a billable, specific ICD-10-CM code for unspecified nephritic syndrome with diffuse membranous glomerulonephritis. It is valid for submission on a claim.
Risk adjustment
N05.2 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.
Medicare coverage
N05.2 is named in 4 Medicare coverage policies — 4 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A55336Billing and Coding: Retroperitoneal Ultrasound
- A55639Billing and Coding: Chemotherapy Agents for Non-Oncologic Conditions
- A56380Billing and Coding: Rituximab
- A58582Billing and Coding: Off-label Use of Rituximab and Rituximab Biosimilars
How N05.2 is indexed
Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to N05.2.
- Glomerulonephritis›membranous NEC(diffuse)
- Glomerulonephritis›diffuse›membranous
- Nephritis, nephritic›with›diffuse›membranous glomerulonephritis
Related codes at this level
Codes that share N05. If N05.2 is not quite right, the correct code is usually one of these.
- N05.0Unspecified nephritic syndrome with minor glomerular abnormality
- N05.1Unspecified nephritic syndrome with focal and segmental glomerular lesions
- 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 N05.2
- Is N05.2 a billable ICD-10-CM code?
- Yes. N05.2 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does N05.2 sit in the tabular list?
- Diseases of the genitourinary system (N00-N99), in the block Glomerular diseases (N00-N08).