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Code
Description

ICD-10-CM Code N11.1
Chronic obstructive pyelonephritis

BILLABLE
Billable Code
Billable codes are sufficient justification for admission to an acute care hospital when used a principal diagnosis.
| ICD-10 from 2011 - 2016

N11.1 is a billable ICD code used to specify a diagnosis of chronic obstructive pyelonephritis. A 'billable code' is detailed enough to be used to specify a medical diagnosis.


The ICD code N11 is used to code Interstitial nephritis

Interstitial nephritis (or tubulo-interstitial nephritis) is a form of nephritis affecting the interstitium of the kidneys surrounding the tubules. This disease can be either acute, meaning it occurs suddenly, or chronic, meaning it is ongoing and eventually ends in kidney failure.

Specialty: Urology
MeSH Codes: D009395, D009395, D009395, D009395,
ICD 9 Codes: 580.89, 581.89, 582.89, 583.89,

Coding Notes for N11.1 Info for medical coders on how to properly use this ICD-10 code

Inclusion Terms:
Inclusion Terms
Inclusion Terms are a list of concepts for which a specific code is used. The list of Inclusion Terms is useful for determining the correct code in some cases, but the list is not necessarily exhaustive.
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
Code Type-1 Excludes:
Type-1 Excludes
Type-1 Excludes mean the conditions excluded are mutually exclusive and should never be coded together. Excludes 1 means "do not code here."
Calculous pyelonephritis - instead, use code N20.9
Obstructive uropathy - instead, use code N13.-

MS-DRG Mapping

  • DRG Group #691-694 - Urinary stones with esw lithotripsy with CC or MCC.
  • DRG Group #691-694 - Urinary stones with esw lithotripsy without CC or MCC.
  • DRG Group #691-694 - Urinary stones without esw lithotripsy with MCC.
  • DRG Group #691-694 - Urinary stones without esw lithotripsy without MCC.

Coding Advice SNOMET-CT

  • Possible requirement for causative agent code

Equivalent ICD-9 Codes GENERAL EQUIVALENCE MAPPINGS (GEM)

Chronic pyelonephritis with lesion of renal medullary necrosis (approximate match)
Stricture or kinking of ureter (approximate match)
Other ureteric obstruction (approximate match)

This is the official approximate match mapping between ICD9 and ICD10, as provided by the General Equivalency mapping crosswalk. This means that while there is no exact mapping between this ICD10 code N11.1 and a single ICD9 code, 593.4 is an approximate match for comparison and conversion purposes.


Parent Code: N11 - Chronic tubulo-interstitial nephritis

** This Document Provided By ICD.Codes **
Source: http://icd.codes/icd10cm/N111