N05.1
Unspecified nephritic syndrome with focal and segmental glomerular lesions
N05.1 (also written N051) is a billable ICD-10-CM diagnosis code for unspecified nephritic syndrome with focal and segmental glomerular lesions. It is part of the FY2027 code set, effective October 1, 2026. It is one of the 11 codes in category N05 (Unspecified nephritic syndrome). The Alphabetic Index lists it under 5 entries. Its coding notes include a Code also instruction, 4 Excludes1 entries and 8 Excludes2 entries.
Code also
Two codes may be needed to describe the condition. This note gives no sequencing order.
Excludes1
Not coded here. The listed conditions generally should not be reported together.
Excludes2
Not included here. Both codes may be reported if the patient has both conditions.
Also from chapter/block level (8 notes)
- 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)
Care settings
How CMS programs treat this code. These are CMS claim edits and list entries, not coverage or eligibility rules.
Home Health Primary
Accepted as the primary (principal) diagnosis on a home health claim. The Home Health Grouper assigns it to the MMTA - Gastrointestinal tract and Genitourinary system clinical group.
Source: CMS Home Health Grouper Software v07.2.26, effective October 1, 2026Includes
Further defines or gives examples of the content of the category.
- glomerular disease NOS
- glomerulonephritis NOS
- nephritis NOS
- nephropathy NOS and renal disease NOS with morphological lesion specified in .0-.8
Inclusion terms
Conditions classified to this code.
- Unspecified nephritic syndrome with focal and segmental hyalinosis
- Unspecified nephritic syndrome with focal and segmental sclerosis
- Unspecified nephritic syndrome with focal glomerulonephritis
Alphabetic Index terms
Terms the official Alphabetic Index lists for this code. 5 entries
- Glomerulonephritis, focal (and segmental)
- Hyalinosis, focal and segmental (glomerular)
- Lesion (s) (nontraumatic), glomerular, focal and segmental
- Nephritis, nephritic (albuminuric) (azotemic) (congenital) (disseminated) (epithelial) (familial) (focal) (granulomatous) (hemorrhagic) (infantile) (nonsuppurative, excretory) (uremic), with, focal and segmental glomerular lesions
- Sclerosis, sclerotic, focal and segmental (glomerular)