Chronic obstructive pyelonephritis
Billable / specific
N11.1 is a billable, specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes in FY2027.
Inclusion terms
Applicable to
- Pyelonephritis (chronic) associated with anomaly of pelviureteric junction
- Pyelonephritis (chronic) associated with anomaly of pyeloureteric junction
- Pyelonephritis (chronic) associated with crossing of vessel
- Pyelonephritis (chronic) associated with kinking of ureter
- Pyelonephritis (chronic) associated with obstruction of ureter
- Pyelonephritis (chronic) associated with stricture of pelviureteric junction
- Pyelonephritis (chronic) associated with stricture of ureter
Includes (from N11)
- pyelonephritis
- chronic infectious interstitial nephritis
- chronic pyelitis
- chronic pyelonephritis
Excludes1
Not coded here — never report together with this code.
Excludes2
Not included here — may be reported together when both conditions exist.
- certain conditions originating in the perinatal period (P04-P96) (from N11)
- certain infectious and parasitic diseases (A00-B99) (from N11)
- complications of pregnancy, childbirth and the puerperium (O00-O9A) (from N11)
- congenital malformations, deformations and chromosomal abnormalities (Q00-Q99) (from N11)
- endocrine, nutritional and metabolic diseases (E00-E88) (from N11)
- injury, poisoning and certain other consequences of external causes (S00-T88) (from N11)
- neoplasms (C00-D49) (from N11)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94) (from N11)
Use additional code
Add a code to identify the following, if applicable.
Also known as
- Pyelonephritis (chronic) associated with anomaly of pelviureteric junction
- Pyelonephritis (chronic) associated with anomaly of pyeloureteric junction
- Pyelonephritis (chronic) associated with crossing of vessel
- Pyelonephritis (chronic) associated with kinking of ureter
- Pyelonephritis (chronic) associated with obstruction of ureter
- Pyelonephritis (chronic) associated with stricture of pelviureteric junction
- Pyelonephritis (chronic) associated with stricture of ureter
- Kink, kinking, ureter, with pyelonephritis
- Nephritis, nephritic, tubulo-interstitial, chronic, obstructive
- Obstruction, obstructed, obstructive, pyelonephritis
- Obstruction, obstructed, obstructive, ureterNEC, with pyelonephritis
- Pyelonephritis, chronic, associated with ureteral obstruction or stricture
- Pyelonephritis, chronic, obstructive
- Pyelonephritis, in obstruction
- Pyelonephrosis
- Stricture, ureter, with pyelonephritis
Parent code
- N11Chronic tubulo-interstitial nephritisHeader