N11.1
Chronic obstructive pyelonephritis
Billable
Code Hierarchy
N11N11.1
Coding Guidelines
Inclusion Terms
- 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
Excludes1 (Mutually Exclusive)
These codes should never be used together with N11.1
- N20.9 - calculous pyelonephritis (N20.9)
- obstructive uropathy (N13.-)
