N13.5
Crossing vessel and stricture of ureter without hydronephrosis
N13.5 (also written N135) is a billable ICD-10-CM diagnosis code for crossing vessel and stricture of ureter without hydronephrosis. It is part of the FY2027 code set, effective October 1, 2026. It is one of the 18 codes in category N13 (Obstructive and reflux uropathy). The Alphabetic Index lists it under 24 entries. Its coding notes include 2 Excludes1 entries and 12 Excludes2 entries.
Excludes1
Not coded here. The listed conditions generally should not be reported together.
- Crossing vessel and stricture of ureter without hydronephrosis with infection (N13.6)
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.
Also from chapter/block level (1 note)
- pyelonephritis
Inclusion terms
Conditions classified to this code.
- Kinking and stricture of ureter without hydronephrosis
Alphabetic Index terms
Terms the official Alphabetic Index lists for this code. 24 entries
- Angulation, ureter
- Compression, ureter
- Constriction, spastic, ureter
- Constriction, ureter
- Contraction (s), contracture, contracted, ureterovesical orifice (postinfectional)
- Disease, diseased, Ormond's
- Fasciitis, perirenal (with ureteral obstruction)
- Fibrosis, fibrotic, retroperitoneal, idiopathic (with ureteral obstruction)
- Intussusception (bowel) (colon) (enteric) (ileocecal) (ileocolic) (intestine) ( rectum), ureter (with obstruction)
- Kink, kinking, ureter (pelvic junction)
- Narrowing, ureter
- Obliteration, ureter
Show 12 more
- Obstruction, obstructed, obstructive, pelviureteral junction
- Obstruction, obstructed, obstructive, ureter (functional) (pelvic junction) NEC
- Occlusion, occluded, ureter (complete) (partial)
- Occlusion, occluded, ureteropelvic junction
- Occlusion, occluded, ureterovesical orifice
- Ormond's disease (with ureteral obstruction)
- Prolapse, prolapsed, ureter, with obstruction
- Spasm (s), spastic, spasticity, ureter
- Stricture, ureter (postoperative)
- Stricture, ureterovesical orifice
- Syndrome, Ormond's
- Syndrome, periurethral fibrosis