N11.1
Chronic obstructive pyelonephritis
- Release
- FY 2027
- Effective
Hierarchy
Where N11.1 sits in the official hierarchy. Each level is the code it is classified under.
- N11 Parent Chronic tubulo-interstitial nephritis
- N11.1 This code Chronic obstructive pyelonephritis
Official Coding Notes
Reproduced verbatim from the FY 2027 ICD-10-CM files. Notes labelled as inherited are declared on a parent code and apply here too.
Includes
chronic infectious interstitial nephritis
Inherited from N11 — Chronic tubulo-interstitial nephritis
Inclusion Terms
Pyelonephritis (chronic) associated with anomaly of pelviureteric junction
Inclusion Terms
Pyelonephritis (chronic) associated with anomaly of pyeloureteric junction
Inclusion Terms
Pyelonephritis (chronic) associated with crossing of vessel
Inclusion Terms
Pyelonephritis (chronic) associated with kinking of ureter
Inclusion Terms
Pyelonephritis (chronic) associated with obstruction of ureter
Inclusion Terms
Pyelonephritis (chronic) associated with stricture of pelviureteric junction
Inclusion Terms
Pyelonephritis (chronic) associated with stricture of ureter
Use Additional Code
code (B95-B97), to identify infectious agent.
Inherited from N11 — Chronic tubulo-interstitial nephritis
Version History
How N11.1 appears in each release imported from the official files, newest first.
-
FY 2027 Effective
CurrentChronic obstructive pyelonephritis
-
FY 2026 Effective
UnchangedChronic obstructive pyelonephritis
Related Codes
Other codes under N11
Codes whose official notes reference N11.1
Data Source
Code information on this page is derived from the FY 2027 ICD-10-CM files published by CDC NCHS and CMS.
- Release
- FY 2027
- Effective
- Source file
- icd10cm-code-descriptions-2027.zip
Official ICD-10-CM source files (opens in a new tab)
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