N11.1
BillableChronic obstructive pyelonephritis
Chronic obstructive pyelonephritis
Coding Notes
Inclusion Terms
Alternative clinical terms for this condition
- 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
Conditions included under this code
- pyelonephritis
- chronic infectious interstitial nephritis
- chronic pyelitis
- chronic pyelonephritis
Excludes 1
Codes that cannot be used together with this code (mutual exclusion)
Excludes 2
Conditions not included here, but the patient may have both
- •certain conditions originating in the perinatal periodP04-P96
- •certain infectious and parasitic diseasesA00-B99
- •complications of pregnancy, childbirth and the puerperiumO9A)O00
- •congenital malformations, deformations and chromosomal abnormalitiesQ00-Q99
- •endocrine, nutritional and metabolic diseasesE00-E88
- •injury, poisoning and certain other consequences of external causesS00-T88
- •neoplasmsC00-D49
- •symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classifiedR00-R94
Use Additional Code
Additional codes that should follow this code
Related Codes(3)
Related Conditions
ICD-11 Equivalents(1)
ICD-11 Equivalents
View full mappingCorresponding ICD-11 codes from the WHO crosswalk mapping
Also Known As / Clinical Terms(32)
SNOMED CT
- CPN - Chronic pyelonephritis63302006
- Chronic pyelonephritis63302006
- Pyelonephritis associated with another disorder197782004
- Secondary pyelonephritis197782004
- Chronic urinary tract infection197928006
- Chronic obstructive pyelonephritis236379002
- Obstructive pyelonephritis4181000119109
- Pyelonephritis due to obstruction of urinary tract4181000119109
UMLS
- Chronic obstructive pyelonephritisC0403389
- Chronic obstructive pyelonephritis (disorder)C0403389
- Pyelonephritis (chronic) associated with anomaly of pelviureteric junctionC2902931
- Pyelonephritis (chronic) associated with anomaly of pyeloureteric junctionC2902932
- Pyelonephritis (chronic) associated with crossing of vesselC2902933
- Pyelonephritis (chronic) associated with kinking of ureterC2902934
- Pyelonephritis (chronic) associated with obstruction of ureterC2902935
- Pyelonephritis (chronic) associated with stricture of pelviureteric junctionC2902936
- Pyelonephritis (chronic) associated with stricture of ureterC2902937
Clinical Terms
- Pyelonephritis associated with another disorder
- Pyelonephritis (chronic) associated with obstruction of ureter
- Pyelonephritis (chronic) associated with anomaly of pyeloureteric junction
- Secondary pyelonephritis
- Chronic urinary tract infection
- Chronic obstructive pyelonephritis (disorder)
- Pyelonephritis (chronic) associated with stricture of ureter
- Pyelonephritis (chronic) associated with stricture of pelviureteric junction
- Pyelonephritis due to obstruction of urinary tract
- Pyelonephritis (chronic) associated with crossing of vessel
- Pyelonephritis (chronic) associated with anomaly of pelviureteric junction
- Chronic pyelonephritis
- Pyelonephritis (chronic) associated with kinking of ureter
- CPN - Chronic pyelonephritis
- Obstructive pyelonephritis
Frequently Asked Questions
What is the ICD-10 code for chronic obstructive pyelonephritis?
The ICD-10-CM code for chronic obstructive pyelonephritis is N11.1. The full clinical description is "Chronic obstructive pyelonephritis". N11.1 is a billable/specific code that can be used on insurance claims and medical billing.
What does ICD-10 code N11.1 mean?
ICD-10-CM code N11.1 represents “Chronic obstructive pyelonephritis”. It is classified under Chapter 14: Diseases of the Genitourinary System and is a billable/specific code that can be used on a claim.
Is N11.1 a billable code?
Yes, N11.1 is a billable/specific ICD-10-CM code and can be used to indicate a diagnosis on a medical claim.
What chapter is N11.1 in?
N11.1 is in Chapter 14: Diseases of the Genitourinary System (codes N00-N99).
What codes cannot be used with N11.1?
N11.1 has Excludes1 notes indicating codes that cannot be used together with it, including: pyeloureteritis cystica (N28.85); calculous pyelonephritis (N20.9); obstructive uropathy (N13.-).
Are additional codes required with N11.1?
Yes, when using N11.1, also report: code (B95-B97), to identify infectious agent..
What SNOMED CT codes does N11.1 map to?
N11.1 maps to 5 SNOMED CT concepts: 63302006, 236379002, 197928006, 4181000119109, 197782004. SNOMED CT is a clinical terminology used in electronic health records.
What are the UMLS CUIs for N11.1?
N11.1 is linked to 8 UMLS Concept Unique Identifiers: C0403389, C2902931, C2902932, C2902933, C2902934, and 3 more. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
How does N11.1 relate to ICF functioning codes?
ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like chronic obstructive pyelonephritis affect a person's functioning — body functions, activities, participation, and environmental factors. AutoICD provides ICF Core Sets for 12+ conditions and can map clinical text to ICF categories automatically. Browse the ICF directory to explore functioning codes.
What is the ICD-11 equivalent of N11.1?
N11.1 maps to the ICD-11 code: GB55.Z (Chronic tubulo-interstitial nephritis, unspecified).
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Includes SNOMED Clinical Terms® (SNOMED CT®) used by permission of SNOMED International. Includes content from the UMLS Metathesaurus, courtesy of the U.S. National Library of Medicine.